Developer community technology week is here again , Meng Meizi anchor brings you the latest issue “ Developer technology broadcast ”. Let's listen to , What's important news for our developers in the past week .
- TIOBE 11 Month programming language ：Java Falling out of the top two for the first time ,Python be a trend which cannot be halted
- China Mobile and ZTE released 《5G+ White paper on industrial Internet Security 》
- The computer in the keyboard ： Raspberry pie 400 Official release , The price is 70 dollar
- Apple will carry its own chip publicly Apple Silicon Of Macbook
- qualcomm 5nm Chip snapdragon 875 Parametric exposure
- SpaceX Successfully launched a GPS III satellite
- be based on Pytorch Of Kornia Differentiable computer vision library open source
- Sound event location and monitoring based on multi direction beamforming and multi task learning
Technology Technique want smell
1、TIOBE 11 Month programming language ：Java Falling out of the top two for the first time ,Python be a trend which cannot be halted
Programming language community TIOBE The latest release 11 Monthly programming language ranking . This month's chart has been published since TIOBE Since the release of the list , A change never seen in the last 20 years ： For the first time, there is a division between the top two places C and Java Languages other than .C Still ranked first ,Java Fall to third , And the second place is now unstoppable Python . since 2018 Since then ,Python The overall market share began to show an upward trend , from 2018 year 1 Monthly proportion 4.68%, By this month 12.12%, Even compared with the same period last year , The increase is as high as 2.27%. As a simple and powerful programming language ,Python Easy to learn 、 The editing cycle is short 、 With a variety of frameworks , In data analysis 、AI 、 machine learning 、Web Development 、 Testing and many other areas have excellent performance . And in recent years, data mining 、AI And numerical computing and other areas of vigorous development , It also improved Python Market share of .
2、 China Mobile and ZTE released 《5G+ White paper on industrial Internet Security 》
recently , With “5G New infrastructure Wisdom makes a new future ” The theme of China Mobile 5G+ The industrial internet promotion conference was held in Beijing . At the conference , China Mobile United ZTE 、 China Academy of communications 、 Beijing University of Posts and telecommunications 、 Sany heavy industry 、 Angang Group 、 Jiangsu Jingyan 、 Harbin Electric Group 、 Baowu group Shaoguan Iron and Steel Co released 《5G+ White paper on industrial Internet Security 》.《5G+ White paper on industrial Internet Security 》 To advance 5G+ Standardization construction of industrial Internet security , promote 5G The security level of deep integration with industrial Internet , Speed up the push “ Made in China ” towards “ China smart ” The transformation of , Help the real economy to develop in high quality .
3、 The computer in the keyboard ： Raspberry pie 400 Official release , The price is 70 dollar
11 month 2 Japan , The raspberry pie foundation officially launched “ Raspberry pie 400”（Raspberry Pi 400）, A built-in raspberry pie 4 The compact keyboard of a computer , The price is 70 dollar . Users only need to add two of them micro HDMI One of the ports is plugged into the monitor , Insert microSD card , Connect the power cord , And then plug in USB mouse , You can get one to handle daily tasks 、 Media playing computer . Because of the raspberry pie 400 It's based on raspberry pie 4 Of , So most computers function the same . however , Raspberry pie 400 Of Broadcom BCM2711 Tetranuclear Cortex-A72（Arm v8）64 position SoC The operating frequency of is 1.8GHz, Raspberry pie 4 Of SoC The operating frequency is 1.5GHz. And raspberry pie 400 Equipped with 4GB Memory 、 Gigabit Ethernet 、 bluetooth 5.0 and 802.11ac Wi-Fi,micro HDMI The port can output up to 4K/60Hz The signal of , There are two USB 3.0 Port and a USB 2.0 port . The power supply goes through USB-C Port supply , There is one microSD The card slot is used for the storage system , One more GPIO Connectors are used to connect various other devices .
4、 Apple will carry its own chip publicly Apple Silicon Of Macbook
before , Apple has officially announced Beijing time 11 month 11 Early morning 2 Will hold a new product launch , At this conference , Apple is likely to release its own chip Apple Silicon Of MacBook product . From the news now , Apple will launch three models with Apple Silicon The new Mac The notebook , Include 13 " MacBook Pro、16 Inch MacBook Pro and 13 Inch MacBook Air. It is worth mentioning that , this Apple Silicon It will be mainly supplied by TSMC .
5、 qualcomm 5nm Chip snapdragon 875 Parametric exposure
10 Mid month , Models for SM-G9910 The samsung 5G The cell phone goes through 3C authentication . This is also the first officially recorded snapdragon 875 new . Qualcomm will be in 12 month 1 Saturday, 2020 Qualcomm snapdragon Technology Summit . When the , new 5nm Flagship chip snapdragon 875 It's expected to make an official appearance . According to the previous information , Xiao dragon 875 The processor uses “1+3+4” Eight core design , among “1” For the super core Cortex X1, Peak performance ratio Cortex A78 high 23%.
6、SpaceX Successfully launched a GPS III satellite
Following 6 Months later , Private space launch companies in the United States SpaceX We just helped the US Space Force launch another GPS III satellite . Through the second generation GPS III satellite , The U.S. global positioning system is expected to usher in many improvements , For example, anti-jamming technology . It is reported that , This launch uses a brand new Falcon 9 Rocket No. , Subsequently, its thrusters were recovered from the unmanned barge in the Atlantic Ocean . meanwhile ,SpaceX Confirm that the payload has been put into orbit , It's getting closer to the deployment point , This is also the company's second attempt to deliver this type of payload . If all goes well , Three place NASA And a JAXA The astronauts will be in 11 month 14 To the International Space Station .
learn Technique front Along the
1、Kornia Open source differentiable Computer Vision Library , be based on Pytorch
Whether in deep learning or traditional visual processing programs , The most commonly used image processing library is OpenCV and PIL 了 . However , because OpenCV and PIL It's all nondifferentiable , Therefore, these processes can only be used as image preprocessing, and can not be optimized by observing the change of gradient . therefore ,Kornia It came into being .Kornia It's based on PyTorch The differentiable open source library of computer vision , stay Github It's already there 3000 star . In order to balance the needs of traditional visual processing and deep learning ,Kornia Realized ： Differentiable basic computer vision operators 、 The expansion of differentiable data .
Thesis link ：https://arxiv.org/pdf/2009.10521
2、 Sound event location and monitoring based on multi direction beamforming and multi task learning
Sound event detection and positioning in smart home 、 Intelligent security and other fields have important application value , And the noise in the environment 、 reverberation 、 Multi source aliasing has brought great challenges to the task . Sound event detection and localization is usually based on microphone arrays , More broadly , How to use multi-channel microphone signal effectively , Improve the performance of speech related tasks based on deep neural network , It's also a problem to be solved .
Jingdong Artificial Intelligence Research Institute has proposed a sound event detection and location method based on multi-directional beamforming and multi task learning , The main feature is to use traditional acoustic signal processing to provide more abundant information for neural network . To be specific , By fixed beamforming pointing to different predetermined orientations , It can extract sound source signals from all directions , And suppress the interference signal outside the azimuth . This method does not need to locate or mask the sound source in advance , Then we can get the spatial representation of diversity .
In this paper, the calculation method of guidance vector based on cross power spectrum using training data is derived , To eliminate the dependence on microphone array geometry . further , This paper designs a sound source localization network and a sound event detection network based on multi task learning . Jingdong artificial intelligence research institute is in DCASE2019 Sound event detection and location data sets are evaluated , The results show that the proposed algorithm achieves the best comprehensive performance .
Thesis link ：http://3.cn/15j-Y667
The above information comes from the Internet , from “ Jingdong Zhilian cloud Developer ” The official account is edited and arranged , It does not represent the position of JD Zhilian cloud
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