How Micro-Influencers Are Revolutionizing the Real Estate Industry

try shutting off the computer, disconnect the memory card, turn on the computer and try to plug it in again. if you are using windows vista you can sometimes repair removable memory if the software/files are damaged. good luck!

How Micro-Influencers Are Revolutionizing the Real Estate Industry 1

1. Can I Change the Micro Sim To A Nano sim?

Yes you should be able to request a nanoSIM if need be. Do not know what is an activation kit though. Usually swapping data between iPhones is just a matter of backing up the old & restoring from that backup on the new using iTunes and/or iCloud.

2. What is Micro SD card?

A micro sd is a little tiny memory card that you put in phones and they have enormous memory and are cheap. they come with an adapter that looks like a regular memory card and you put the mocro sd in it and you can put that into your camera and take pictures then put the micro sd in your phone and see nice high resolution photos. I have a phone with one and they are extremely nice. But your phone must have a micro sd slot for one

How Micro-Influencers Are Revolutionizing the Real Estate Industry 2

3. 2gb sandisk sd micro memory card helpppppp?

are you putting them in a music folder on the memory card? because if not then the phone wont recognize the songs

4. Are micro braids out of style?

definitely NOT! esp if you add other colors like brown w/ light brown or black w/ brown or brown w/ dark red.. and make sure u keep them up like comb out the end or it will look gross and unkept.. Hope I helped! :D

5. Micro USB Flash Drive on Android Without OTG Cable

In your case there is no need for an usb OTG cable. It does nothing else then wiring the USB Type A connector to the micro usb connector, there is no electronic involved. The same goes for the micro usb connector on the stick itself. It's directly wired to the type A connector.Usually the device should recognise and mount the stick automatically although this can be different depending on the manufacturer. I assume that sony's android implementation does not mount it automatically, but they have a manual (thanks ernie for the link). From Sony:.

6. Is there any good micro USB cable (not loose)?

I wonder if a USB extension or port multiplier would be a decent workaround? If you used an extension cable, you can avoid damaging the mini-USB port on the phone since you generally plug/remove the extension plug instead of the mini-plug

7. How to micro-adjust distance for focusing in macro photography?

From my experience the easiest way to do this is moving the object while looking in the viewfinder

8. Micro scratches on plastic of frame of glasses?

I had this happen to me with some metal frames a year ago. I have plastic frames right now, and after examining them in close detail, I noticed micro scratches too. It probably is just one of those things. The best policy is "When they are not on your face, they are in their case." I drop mine in the shower and stuff. I would not worry too much about it, people probably are not going to notice. If you really want you could talk to the people where you got your glasses. Just be like "Hey, I am not really sure why these are scratching...." They will probably give you a new pair of frames. That is what they did for me with my metal frames

9. Micro SD card help please?

sounds like you might need a driver for the reader. either have a look on the readers manufacturers website, or get your operating system to search the net for the correct driver

10. How to put in micro braids???!! HELP!!?

Micro braids can take up to hours sometimes people get them done over the course of 2 days depending on how long u want them and how long ur hair is! And as long as you can take care of them they can stay in until u notice ur roots start to grow then your hair kinda looks fuzzy at the top. Try going to a salon im sure they can do it there..or even ask someone thats a friend of the family that knows how to braid. If your moms not sure your best bet it to not do it because if you dont like it in the end the taking out process takes just as long as puttin them in because you have to go braid by braid

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STMicroelectronics (st) Helped Pulseon Launch the Smallest Wearable Heart Rate Monitor on the Market
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How to Use Generator to Run Microscopes
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Detailed Information Overview of 51 Single Chip Microcomputer Nixie Tube
Detailed Information Overview of 51 Single Chip Microcomputer Nixie Tube
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Microsoft Access Database Design Basics?
Microsoft Access Database Design Basics?
Microsoft Access Database Design Basics?The first part tells you what tables you need and what columns each table will have. "sno" is short for "Supplier Number" and will be the primary key. For each part, the first word is the column name and the second word is the information type. Note that in the Orders table, you have a concatenated primary key where both sno and pno together are the primary key and they are both foreign keys (hopefully you understand what that means and did not sleep through that part).— — — — — —Help!! Decorating a church gym for a wedding reception!!?Use Christmas ligts to light the place - prefrably white ones but any would do strung around the walls. Drape cream or white material on some of the walls to make a softer more romantic background. Creme table cloths with a coloured overdrape and a coloured table centrepice on each table will set the room off. Put Bunches of silk flowers on the wall drapes in the gatherings as well. Hope you have a lovely day. Best Wishes.— — — — — —Any cheap table decorations for a CompanyDepending on the number of people you are expecting: You could go to the dollar store and buy some inexpensive miniature ornaments and toss them around, or use them as place card holders. Buy some ribbon with the wire edging and make a nice bow or two for each table. Candy canes with ribbons Make some snowmen or paper snowflakes and lay them around You can spread some tinsel out over the tables for shine. Maybe string popcorn and make wreaths, paint them green and add ribbons. Pipe cleaners also make cute wreaths Good luck!— — — — — —What happens when you want to book out the entire restaurant for an event but the restaurant already has normal seat reservations for each table? Do they cancel the initial reservations?If the restaurant is smart, they wo not bother trying to accommodate your event, unless you pay them a healthy room fee. They will make a lot more money holding a normal dinner service and turning tables as opposed to tying up the room for an evening and doing one seating. If they have reservations set already, they should to tell you to either pick another date or pick another venue.— — — — — —What's the most effective way to duplicate an instance on SQL 2008?Umm, not sure if this helps, but we are using a set of scripts to "clean" a production database and prepare it for development abuse. We are taking all the big tables that have a datetime column and we are rebuilding the table with only the last year of data in it. From a full db of about 200 GB we get to about a 40 GB db for development. Mainly we are generating dynamic scripts for creating bcp files for each table, recreate the table (including any related constraints) and then bulk insert only last year data.Maybe there are tools to do this, but our shop goes cheap :-)— — — — — —Brides out there....is it worth the money investing in disposable cameras to go at each table at the reception?Do not do it. First of all, who uses regular cameras anymore these days anyway. Do you want a bunch of pictures of things on your table, like the centerpiece, the water glass, etc. Plus, most people with those cameras take all the same pictures with them that your photographer does like, your first dance, the cake, etc. Save your money and spend it elsewhere. If you really want specific pictures, make a list for your photographer— — — — — —Set up for Advice for the Bride and Groom table?i just went to a wedding that had something like htat... instead of setting up a table, place paper and pens in the middle of each table at the reception and either write a little something to exdplain it or get the dj or someone to mention what they are for. then (at the wedding i went to) the bridesmaids went through the advice/wishes and pick the top 10, and the dj read each one out loud, it made the whole place laugh out loud.. it was fun this way... at least you can just sit in your seat and write something instead of waiting in line!
MCU Development Board Which Is Good_ Single Chip Microcomputer Development Board Ranking
MCU Development Board Which Is Good_ Single Chip Microcomputer Development Board Ranking
What is MCU development boardThe development of single chip microcomputer technology is guided by the development of microprocessor (MPU) technology and VLSI technology, driven by a wide range of application fields, showing a more personalized development trend than microprocessor.What is the use of MCU development board1. It can be used as a burner (i.e. programmer) to write its own program into the single chip microcomputer.2. You can use some hardware on the development board3. Using a single-chip microcomputer development board, you can compile different programs to realize various functions without welding a circuit board for an experiment.4. If you design and debug the program on the development board of single chip microcomputer, you can easily transplant it to the product, but sometimes you need to make appropriate modifications, such as port settings, because after all, the development board and the circuit board of the product cannot be completely consistent.5. The use of MCU development board saves a lot of resources and improves our learning efficiency. It provides a good platform for us to learn MCU better.MCU development board which is goodSingle chip microcomputer development boards are similar. You can choose according to the function price. It's enough. There's no need to be more fancy. The following are the four microcontroller development boards recommended by Xiaobian, which are worth buying.1. Wu Jianying2. Guo Tianxiang3. Golden Beach4. Jun tengfaWu Jianying MCU development board resources introduction1. A USB to UART chip of ch340 realizes USB Download program, which provides convenient Download for notebook computers without serial port.2. There is a self-healing fuse at the power inlet on the board, which can effectively protect your computer motherboard and development board. Plus this insurance, as a beginner, you won't burn the motherboard and MCU even if you accidentally short circuit.3. The board comes with a single chip microcomputer, an stc89c52rc, 8K program space and 512 byte data space.4. There are 18 LED lights on the board, one of which is the USB power indicator, which will light up when you plug in the power. There is also a single chip microcomputer power indicator.5. There are 8 nixie tubes on the board, which can be used to do simple stopwatch experiments of nixie tubes, calculator functions, display temperature, time and so on.6. The board is equipped with a digital rotary encoder, which can complete the addition and subtraction of data through rotation and be used as a confirmation key.7. The board is equipped with a DS1302 real-time clock chip, which can be used to do real-time clock experiments and understand the working principle of electronic watches.8. The board is equipped with a 24C02 EEPROM chip to save important data that cannot be lost after power failure and to learn IIC communication experiment.9. The board is equipped with a pcf8591. This chip integrates AD and DA, which can be used to carry out voltage acquisition experiments through AD and generate square wave, triangular wave and sine wave signals through da.10. 1602 LCD screen is integrated on the board, which can be used to learn LCD display, do temperature display experiment, stopwatch display experiment, etc.11. There are 21 keys integrated on the board, including 1 single chip microcomputer reset key and 16 matrix keys. There are 16 keys from 0 to F, and four independent keys. The pressing information is sent to the MCU interrupt port through and gate 74hc08.12. There is a passive buzzer on the board, which can be used to do music output experiments, so that you can fully understand the working principle of birthday cards.13. A DS18B20 temperature sensor is integrated on the board to learn and realize the digital thermometer.14. An infrared receiving tube is integrated on the board to learn the principle of infrared communication.15. There are four 74HC595 chips on the board, which are used to drive 16 LEDs and 8 nixie tubes. The display of 74HC595 is very common in the field of industrial control, which can save a lot of IO port resources and lay a foundation for a complex and systematic work.16. Board layout and wiring, including capacitor and resistor placement, are completed by senior engineers, taking full account of EMC interference and other issues. It is a good reference object for your future product design.How to choose MCU development board1、 Select the single chip microcomputer before selecting the boardThis is easy to understand. Different MCU and development board are different. Circuits, minimum systems, functions, etc. are different. So choose a chip first.Principle of chip selection:1. Simple and easy to use.Choose a simple one. Don't choose high-grade goods as soon as you come. Then you won't be confident in three days, because there will be more problems when you start to get started.2. Cheap.Don't spend hundreds or thousands of money to buy it. There are still many days to spend money later (save some money to buy a car, a house and a daughter-in-law, ha ha).3. Cost performance.When the price is lower, select chips with more functions and resources.On the issue of chip selection, the opinions of all sellers are unified. We recommend beginners to learn 51 single chip microcomputer. 51 single chip microcomputer is a classic, 8-bit single chip microcomputer. Its ability is not large, but it can not be underestimated. Now some people doubt the necessity of learning it and say how fast it is developing. There is no market for 8-bit low-speed MCU. This is wrong. Anything that exists has its value. The cost performance of 51 single chip microcomputer is relatively high. Now STC company has developed many series of chips based on the original traditional 51 single chip microcomputer, such as stc11, STC12, stc15, etc. Functions and resources are relatively rich, but the 15 series is a new product, which will inevitably have some loopholes and poor performance, so it is the wisest to choose the 12 series. The traditional 51 single chip microcomputer, such as AT89S51 and C51, will have less resources and lower cost performance than STC. To put it bluntly, STC is a Shanzhai, but the Shanzhai is very cow X. It's done better now.2、 Select MCU development board1. BrandEat in restaurants with many people, go shopping in stores with many people. TB shopping depends on goods with high sales, and so on. I believe everyone will choose like this. Today, Xiaobian wants to tell you that you really can't choose SCM development board like this. Why, wait for xiaodai to tell you one by one. I am a beginner learning SCM. What I hope most is that someone will take it. If there is a problem, someone will know and someone will help. Big brands and big advertisements are boards with good quality and good after-sales service. Wait, good reputation, how good the advertisement says. But what is the real situation? Board quality, PCB boards, no matter how big the seller, tmall or mall, PCB boards can not be produced by themselves. For such a production line, there are millions and tens of millions of workers. Therefore, the board will not have quality problems, because all boards are produced by large PCB manufacturers. As for after-sales service, big sellers sell dozens or hundreds of pieces every day, most of them are beginners. Look at the size of their after-sales crowd. Customer service can't be the professional electronic engineer advertised. Electronic engineers can't afford to rely on TB stores. After you asked Wangwang, the people who answered you may not have higher education than you. Most of them are people with low income and low education. After simple training, they will answer you professional electronic questions. Do you think you can get the answer you want. Besides the shop. Small sellers have few sales and few consulting groups. Most of these stores are managed by 1-3 people. They are made by a group of electronic enthusiasts themselves. As I said before, the board is OK. After sales, the small stores are all professionals, and there are few consultants. They can really solve problems for you. Some people will say that if you sell more, there will be more and more people.Therefore, Xiaobian reminds me that there are more people to choose for dinner, and you can't choose those with good sales when buying development boards. Choosing small and medium-sized sellers is the best. I believe big brands are pits2. FunctionThe main functions of each family are similar. In order to highlight their selling points, some big sellers will make some very empty things on it, which is actually useless. The development board should not be large, just use it, not tall, just be able to use it. Necessary functions shall be provided. Many development boards are 20cm x 20cm, but to tell you the truth, half of what you can use is good. Good sellers make the development board large and have many functions in order to sell together. However, there are no accessories with additional functions in the standard configuration, so you need to spend more money to buy them. For example, the advertisement has 8x8 dot matrix, stepping motor, DC motor, etc. But I don't take these with me. I need to buy them myself. Come down like this. The last price is very expensive.The following board selection functions are necessary, and others are optional: (1) single chip microcomputer is the smallest system. It is best to replace single chip microcomputer (2) led water lamp (3) nixie tube display (4) independent key (5) matrix keyboard (6) temperature sensor (temperature and humidity) (7) buzzer (8) clock chip (9) power expansion.It's okay if you don't have the rest. When you learn these things, you can design the board yourself and what you want. It should be noted that it's best to lead out all these interfaces, so that they can be used easily, and the program can be changed.I see many boards learning GTX, DZR, PZ, etc. the circuits are connected and switched through jumpers. In this way, when you do your own design, especially your graduation design, you make a circuit board. The circuit and the development board are the same, and the latch is gone. The program is still in accordance with the latch in the original development board routine, how to set and define. This will certainly not realize your design. The defense teacher will laugh at you (hehe). I saw these problems with my own eyes. In the end, Bi Shi couldn't make it. He came to me for help. That's what most people do.3. PriceBuy development boards, especially for beginners. Don't buy more than 100 development boards. GTX's 380 yuan, dzr200 more. A lot of things are done. Looking at the tall boards, they are hundreds. As I said before. If you buy it, you will be trapped. As long as the circuit interface is not led out, the jumper is set. It's not easy to use. I can't learn anything. But most TB boards are like this. (in addition to our small advertisement, ha ha) our board is 100 yuan. There should be some. There is no surplus, and a little PCB space is not wasted (you know, PCB is calculated by area, which is very expensive)
Basic Application System and Development Trend of Microcontroller Application Development of Computi
Basic Application System and Development Trend of Microcontroller Application Development of Computi
Since the birth of microcontroller in the 1970s, after more than 40 years of development, it has been applied to products in all walks of life. A variety of intelligent products have also brought great convenience to people's production and life. With the popularization and development of microcontroller, the ubiquity and networking of computing, the application field of microcontroller will be more and more extensive.Introduction to microcontrollerThe program in the microcontroller memory is used in close cooperation with the microcontroller hardware and peripheral hardware circuits. It is different from the PC software. The program of the microcontroller is called firmware. Generally, microprocessor means that CPU is on a single integrated circuit, while microcontroller means that CPU, ROM, ram, I / O, timer, etc. are on a single integrated circuit. Compared with CPU, microcontroller does not have so powerful computing power and memory management unit (MMU), which makes microcontroller can only handle some relatively single and simple control, logic and other tasks. It is widely used in equipment control, sensor signal processing and other fields, such as some household appliances, industrial equipment, electric tools and so on.Generally, the microcontroller is composed of CPU, memory (memroy), input / output (I / O), etc. The progress of integrated circuit technology makes today's microcontrollers integrate more functions than early products.Common microcontroller cores include 8051, arm Cortex-M series, MIPs, AVR, PIC, risc-v, etc.The main peripherals of the microcontroller include ADC, DAC, USB, can, Ethernet, SPI, USART, I2C, EEPROM, comparator, I2S, etc. In the future, microcontroller peripherals will continue to integrate and develop in the application directions of display, audio, connection, sensing and control, which will enrich the functions of microcontroller products and have a wider range of applications.The classification of microcontrollers can generally be divided according to their structural characteristics. According to the number of bits of bus or data register, they can be divided into 4-bit, 8-bit, 16 bit and 32-bit microcontrollers. According to its instruction set, it can also be divided into RISC and CISC microcontrollers. According to its memory architecture, it can be divided into Harvard architecture and Feng architecture â–ª Neumann structure. According to the application of microcontroller, it can be divided into general microcontroller, ultra-low power microcontroller, wireless microcontroller and automobile microcontroller.Basic application system of microcontrollerVarious analog quantities or physical quantities in the physical world are converted into electrical signals through sensors, converted into electrical signals recognized by the microcontroller through signal conditioning, and then converted into quantitative data readable, written or calculated by the microcontroller by analog-to-digital conversion (A / D) or I / O port, which makes the analog quantities or physical quantities in the physical world digitized, Thus, we can perceive various changes in the physical world.Development of microcontroller product formWith the development of integrated circuit technology and the change of market demand, the integration of microcontroller is higher and higher, and the resources and functions of products are richer and richer. In recent years, microcontroller products have been developed in sensor, control and communication applications.The integrated product of microcontroller and sensor is intelligent sensor. According to the definition of intelligent sensor in the national standard intelligent sensor part 3: Terminology (GB / T 33905.3-2017), it is a sensor with two-way communication means with external system, which is used to send measurement, status information, receive and process external commands.The integrated products of microcontroller and some control functions are specific products for some applications, such as remote control, touch control, motor control, etc.The integrated product of microcontroller and communication function is the microcontroller of communication application. Communication includes wired and wireless parts: wired, such as Ethernet, wireless, such as Lora, Bluetooth, Nb IOT, etc.The application and development of microcontroller products in all aspects enable the intellectualization of products.Microcontroller Market OverviewAccording to the current microcontroller companies and released products, this paper gives a simple overview of the microcontroller market.From the perspective of provinces and cities where microcontroller companies are located, microcontroller companies are mainly concentrated in Shenzhen, Shanghai and Jiangsu, accounting for 70% in total.From the perspective of microcontroller instruction set, the market share of CISC and RISC instruction set microcontroller products is about 24% and 76% respectively. RISC instruction set microcontroller products dominate the market.In terms of the number of bits of the microcontroller, the microcontroller can be divided into 4 bits, 8 bits, 16 bits and 32 bits. Microcontroller products account for 55% of 32 bits, 43% of 8 bits, 2% of 4 bits and 1% of 16 bits. 32-bit and 8-bit occupy the vast majority of the market, and 32-bit is slightly higher than 8-bit microcontroller products.From the classification of microcontrollers, microcontrollers are divided into general microcontrollers, ultra-low power microcontrollers, motor control microcontrollers, special microcontrollers and others. Among them, the special microcontroller includes power metering, carrier, touch control, remote control, etc. The general microcontroller market accounts for 73%, the special microcontroller product market accounts for 13%, the ultra-low power microcontroller product market accounts for 8%, the motor control microcontroller market accounts for 5%, and others account for about 2%.From the perspective of microcontroller core, micro control products account for 22% of 8051 core products, 20% of arm Cortex-M0 core products, 14% of arm Cortex-M3 products, 12% of arm cortex-m4 core products, 5% of arm Cortex-M0 core products, 1% of arm cortex-m23 core products, 1% of risc-v core products and 24% of others. The combination of arm Cortex-M core products accounts for 52%. ARM core products dominate the market.From the operating frequency of micro control products, most micro control products operating below 20MHz account for about 29%. Products below 100MHz account for about half, about 54%. High frequency and high performance micro control products are still a few.From the price of microcontroller products, according to the product and price information released by some companies and the channel information of network media, the prices of 8bit and 32bit microcontrollers are counted. Ppt data takes the mainstream 20pin package in the market as an example. In 2020, the price of 8-bit and 32-bit microcontrollers is about US $0.1.Microcontroller market sizeAccording to the 2020 IC insights McClean IC mid year update report:Global MCU sales decreased by 8% in 2020 compared with 2019, which is another decline after a decrease of 7% in 2019.The microcontroller market will recover moderately in 2021, with sales increasing by 5% to US $15.7 billion, 8% in 2022 and 11% in 2023. At that time, MCU revenue will reach a new high of US $18.8 billion.Microcontroller shipments will decline by 8% to 23.5 billion in 2020.It is expected that the shipment of MCU will rebound by 6% to 24.9 billion in 2021, increase by 8% in 2022 and 10% in 2023. At that time, the global delivery of MCU is expected to reach a new record of 29.6 billion.According to the import and export of Chinese customs processors and microcontrollers, the total import and export volume in 2019 was 19.8 billion, a year-on-year decrease of 0.95%; In 2019, the total import and export amount was USD 178 billion, with a year-on-year increase of 14.40%. In 2019, 120.7 billion processors and microcontrollers were imported, with a year-on-year increase of 1.94%; In 2019, the import amount of processors and microcontrollers was USD 126.1 billion, with a year-on-year increase of 12.85%. In 2019, the number of processors and microcontrollers exported was 78.1 billion, a year-on-year decrease of 5.22%; In 2019, the export value of processors and microcontrollers was USD 35.7 billion, with a year-on-year increase of 21.02%.Development trend of micro control and development of computingBoth processor (CPU) and microcontroller (MCU) have core arithmetic logic operation unit (ALU), which can be collectively referred to as "computing".The development of computing can be roughly divided into: Internet, mobile Internet and Internet of things. PC / notebook is based on the calculation of processor (CPU), which provides information sharing and creates the Internet; Mobile devices such as mobile phones / tablets are also based on processor (CPU) computing, provide mobile services, and achieve the mobile Internet; Sensors / devices are based on the calculation and sensing data of microcontroller (MCU), which makes more analog or physical quantities in the physical world digitized or quantified. They are connected to the Internet with the help of communication technology, which promotes the development of the Internet of things. In fact, the Internet of things is the Internet of things. Microcontroller will provide basic and extensive computing for the Internet of things.Evolution of computingThe development of computing is evolving from individual computing to group computing, and then to cluster computing. Monomer computing is the intelligence of traditional products, or intelligent hardware, which has the function of data acquisition and processing and can be controlled. Collaborative computing is to connect the single devices together with the help of communication technology, which can carry out data exchange and computing collaborative processing, or combined with cloud computing. Cluster computing is to connect a group of software or hardware to complete computing tasks with high close cooperation, which can provide more computing functions.Chinese microcontroller manufacturersList of general micro control companies in China
LG Applied for LED Related Icons and Plans to Launch Its First Micro LED TV
LG Applied for LED Related Icons and Plans to Launch Its First Micro LED TV
It is reported that LG plans to launch its first micro LED TV at IFA 2018. At present, it has applied for three cooperation with micro   Trademarks related to LED display technology.This may not mean much, but it is estimated that LG is ready to share a share with Samsung in the field of micro LED TV. Business Korea reported in February this year that LG plans to launch "microled TV larger than Samsung the wall TV" before September this year.Microled is also called mled or μ LED,“ μ” Stands for "micro" (because“ μ” It is the 12th letter of the Greek alphabet). This week, flatpanelshd found that LG had applied for "true" from euipo (European Intellectual Property Office) μ LED”、“Q μ Led "and" m " μ "Led" trademark. These applications are submitted graphically and are currently under review by the trademark office.LG has classified trademarks, such as "TV LED display" and "TV receiver", as well as other completely unrelated categories. Previously, LG has applied for "X" μ LED’、‘S μ LED 'and' XL ' μ LED 'trademark.Although LG is still committed to the production of OLED TV, microled display technology is gradually replacing OLED technology. Like OLED, microled is a self luminous display technology, and each pixel can emit light. The difference from OLED is that microled is produced based on inorganic materials. One of the difficulties faced by microled is to make the pixel size sufficient Small to fit a typical TV size display panel.LG competitor Samsung plans to launch the 146 inch wall micro LED TV in August this year. Sony is also developing a display based on similar technology. In 2012, Sony showed a 55 inch prototype TV called "crystal led", but it has never been available.Source: OFweek display network
The Development Process of Microblog Push System, How to Use Machine Learning to Mine Hot Spots and
Presumably, the vast majority of Internet users in China have Sina Weibo user accounts. According to the latest data, in the financial report of the fourth quarter of 2018, the monthly active users of microblog exceeded 462 million, an increase of 70 million for three consecutive years; The number of microblog vertical fields has expanded to 60, and the monthly reading volume has exceeded 10 billion, reaching 32 fields. There is no doubt that since its launch in August 2009, microblog has been the industry-leading Chinese social media with remarkable achievements.There was a saying that "onlookers are power, and public opinion changes China". Many popular events such as star gossip and explosive news were sent from microblog and spread all over the network. Until now, microblog has also launched many new functions, such as "hot search", "news", "story", etc., with more emphasis on the development of "social", "all media" and "vertical field", so as to further meet people's demand for real-time and first-hand news resources under social attributes.The role of push (message push) is to improve user activity and stickiness, improve user retention, and further improve product functions and user participation. For example, reminders of major events at home and abroad, reminders of major events in the field, important messages pushed by people concerned or friends, and message reminders of content of interest can guide users to open applications for content of interest.However, another fact is that the micro-blog server crash problem caused by the frequent traffic congestion of "Tucao" make complaints about the hot events, which is challenged by both hot search and information flow. With the increasing number of users and message concurrency, the performance and stability of message push server based on mobile terminal also need to be tested. For example, in terms of sorting, the daily push volume of the microblog platform can reach several hundred million. If all the full volume calculation is adopted, the resource consumption of the server will be too large. The microblog team adopts the method of piecemeal batch calculation.Recently, Qi Yanjie, a technical expert of microblog R & D center, said in an interview with AI technology base, "Weibo has always been committed to building a social media platform based on user relations, so that users can get friends' updates in time and find new things anytime and anywhere. How not to miss important information? It is obviously unrealistic for users to refresh their attention list every 5 minutes. A more efficient way is to remind them through system push, but push is a strong disturbing behavior. How It's interesting to build a push recommendation system that not only doesn't disturb users too much, but also makes users happy to eat melons. "Qi Yanjie, technical expert of microblog R & D CenterCTA conference held in Hangzhou from May 25 to May 27 (official website: https://dwz.cn/iSZ7BQUR )As a guest speaker of the machine learning forum, Qi Yanjie will introduce the development process of microblog push system, how to use machine learning for hotspot mining, blog annotation, and the model upgrading of personalized recommendation system.Landing of machine learning on microblogIn fact, the gradual evolution of microblog is inseparable from the continuous improvement of the platform technology R & D team in the ability of new technologies. In Qi Yanjie's view, "microblog attaches great importance to the follow-up and implementation of new technologies, and the internal team has done a lot of work. Now it also attaches great importance to external exchanges and participates in some important meetings every year."AI technology base: what are the prominent technologies or applications in the field of content recommendation and user growth in the past few years? What are the differences and connections with traditional means in the past?Qi Yanjie: in the past few years, the development of technology can be said to be rapid and shocking. If you usually pay attention to meetings or competitions, you will find that good papers or solutions have made great progress every year. The industry is also working very hard to continuously improve the product effect and make the user experience better and better.The purpose of listing these is to illustrate that if the year is counted, the outstanding technology will become less prominent because it develops too fast. Only in the aspect of model ranking, for example, LR super large-scale feature was still standard for ranking a few years ago, and later evolved into FM , until now it is deep , so it has to be said that the technology has been advancing. However, what remains unchanged is to make more effective use of data through calculation Improve the quantity, improve the accuracy of the model and serve the personalized needs of users.AI technology base: what challenges do you think are facing in the process of completing accurate and rapid personalized push based on the current technical capabilities of microblog? Why can machine learning method be applicable to current problem solving?Qi Yanjie: the data of microblog is huge, and the user behavior is also extremely rich. Not to mention the complex information such as form, content and emotion contained in the blog, which is the advantage of microblog and the challenge of microblog machine learning. How to understand users, understand content, connect users and users, users and content? These problems need NLP, computer vision, graph calculation Sorting model and other technologies. Only based on machine learning and through the learning and abstraction of large-scale data, can we achieve accurate personalized content distribution.AI technology base: in your previous sharing, you also mentioned that "blog quality, algorithm model and distribution efficiency jointly determine the push effect". In your opinion, there are many types of microblog users and pay more attention to a wide range of interests. In the process of practice, how to make more accurate content recommendations according to user portraits?Qi Yanjie: first of all, the content of blog posts should be rich. To meet the personalized needs, we must ensure that the scope of candidate blog posts is wide enough; then, reserve on demand, know which content users have greater needs according to the user's portrait, and mine the content according to the needs can better ensure the accuracy and sufficiency of consumable materials; then, through rich recall methods and efficient sorting model Type for recommended distribution.Common recommendation algorithms include collaboration, vector, model and so on.AI science and technology base: in fact, the microblog text is short and the amount of information is small (sometimes involving yellow, unhealthy, inappropriate content and other information), so it is difficult to achieve fine-grained representation of the text content. For this, does the team have a better solution in terms of understanding this article?Qi Yanjie: This is really a good problem. As I mentioned earlier, user understanding and content understanding are pain points and difficulties, but they are also the areas of rapid progress in machine learning. The current progress in NLP and computer vision has given us good support, including the emergence of Bert model last year, the practice of embedding, face recognition, object recognition, etc They all have good performance.AI technology base: many people have mentioned the concept of multimodal integration. What do you think of it? Has it been applied and effective in microblog related businesses?Qi Yanjie: this question can be related to the previous one. Because now, with the improvement of personal hardware, the forms of content creation are constantly enriched. From the initial text, to the increase of later pictures, to the emergence of video content, and even the addition of live broadcasting, users have too many forms to express their thoughts or emotions. The simple text dimension can no longer be used As far as I know, many colleagues are doing relevant content and have good results.About Qi Yanjie himselfIt is understood that Qi Yanjie first served the industry software. He entered the Internet industry in 2010 and has been engaged in R & D in the direction of crawler, index, retrieval and data analysis. Later, users' habit of obtaining information gradually changed from active search to passive acceptance. The recommendation system entered a period of rapid development, and machine learning began to transform the whole society. "What machine learning needs most is data. Whether in terms of quantity or dimension, microblog has a huge amount of public corpus and behavior data. I think this is the best soil for machine learning application." later, in 2016, Qi Yanjie joined Sina microblog team. At present, he is mainly responsible for pushing related business in microblog UG algorithm group.According to his observation, in recent years, microblog push has been greatly transformed, and the upgrade from editor recommendation to algorithm recommendation, business independence to unified push platform has been completed, so that users have a good improvement in experience.As a guest speaker at the machine learning forum of Hangzhou CTA conference, Qi Yanjie said: "the advancement of technology is inseparable from the experience of pioneers, let alone the impact of ideas. We look forward to the technology feast of cta2019."
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