Tag：algorithm
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Time：2020-9-21
Review of the previous article In the last article, we introduced the related knowledge of naive Bayes algorithm, including the following aspects: The basic principle of naive Bayes algorithm Formula derivation Bayes criterion (conditional probability formula) Constructing a simple text classification algorithm for training and testing Laplace smoothing correction The part of formula derivation is […]
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Time：2020-9-20
Introduction:Visual object tracking is an important research problem in the field of computer vision. Generally speaking, visual object tracking is the process of finding the object of interest defined in the current frame in the subsequent frame of a video. It is mainly used in some visual applications that require the spatial position and appearance […]
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Time：2020-9-19
Many people are not unfamiliar with traditional customer service, such as FAQ, a static service mode. One is the type with long delay, such as work order. There is also a very easy way to cause busy, such as the hotline. However, intelligent customer service is quite different. It can effectively reduce the cost of […]
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Time：2020-9-17
Abstract:This paper introduces the measurement indicators of high concurrency system, describes the design ideas of high concurrency system, and then combs the key technologies of high concurrency. Finally, it makes some extended discussions based on the author’s experience. At present, digitalization brings business innovation and promotes the rapid development of enterprises. At the same time, […]
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Time：2020-9-17
39 common interview questions of Java foundation frequently asked by bat 1. The size of the eight basic data types and their encapsulation classes 2. Reference data type 3. Can switch use string as a parameter 4. The difference between equals and = = 5. Automatic packing, constant pool 6. What are the common methods […]
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Time：2020-9-17
string modelStr = SystemInfo.deviceModel; bool IsIphoneXDevice = modelStr.Equals(“iPhone10,3”) || modelStr.Equals(“iPhone10,6”) || modelStr.Equals(“iPhone11,8”) || modelStr.Equals(“iPhone11,2”) || modelStr.Equals(“iPhone11,6”) || modelStr.Equals(“iPhone12,1”) || modelStr.Equals(“iPhone12,3”) || modelStr.Equals(“iPhone12,5”); return IsIphoneXDevice; The one above has to write the model, which is too troublesome. The following is the new algorithm, and the following is the aspect ratio of various models Old iPhone series […]
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Time：2020-9-15
AB test: from burying point to abandoning treatment The first step of AB test abandonment was as follows Whether we use the frequency school or the Bayesian school, we need to make decisions or go through the whole process of AB testing. However, many times, the opportunity cost of using ab test to make all […]
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Time：2020-9-15
Author: Jonathan cartrette, member of zephyr community and technical director of Legrand North American IOT systems As a species, we have created a dependence on technology. This interdependence creates billions of lines of deeply embedded, uneven quality code that has been dormant offline for decades with potentially damaging connectivity, sensors, and actuators. The resource mix […]
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Time：2020-9-13
The similarity calculation of data sets is widely used. Most of the existing underlying algorithms of artificial intelligence are based on the approximate calculation of probability (possibility), and then take the approximate value of maximum possibility. From root 2 to alphago https://ufqi.com/news/ulongpage.191.html ）。 A visual proof that neural nets can compute any function ( http://neuralnetworksanddeeplearning.com/chap4.html […]
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Time：2020-9-13
An overview of the article In the previous article, we learned that when cross device transmission, we need to use routing table to know the next hop IP of datagram There are two columns of important information in the routing tableDestination IP addressandNext hop IP addressThe two IPS form a mapping relationship. In the previous […]
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Time：2020-9-13
At present, the most popular RSA encryption algorithm can crack the encrypted information only when the public key and private key are owned at the same time. The emergence of RSA encryption algorithm is conducive to data security transmission 1. The RSACryptoServiceProvider class in C ා allows you to generate XML format public key and […]
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Time：2020-9-13
Use training environment: Tensorflow 2.2.0，CUDA 10.1，cuDNN 7.6.5。 When the vgg16 convolution base is instantiated, the convolution algorithm cannot be obtained, which indicates that cudnn cannot be initialized. Open the code file and add the following line in front of it to solve the problem. from tensorflow.compat.v1 import ConfigProtofrom tensorflow.compat.v1 import InteractiveSessionconfig = […]
