Tag：Deviation
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Time：2021-3-22
Because of the idea of java object-oriented, a large number of objects need to be stored in the JVM. In order to achieve some additional functions, some tag fields need to be added to the object to enhance the function of the object. Learning concurrent programming knowledgesynchronizedIt is always difficult for us to understand its […]
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Time：2021-3-15
var location = []; function getAddrGeo(addr) { //Get the latitude and longitude of an address, which can be used for mobile terminal to jump app navigation $.ajax({ type: “GET”, url: ” http://restapi.amap.com/v3/geocode/geo?key= Your key & S = rsv3 & address = “+ addr.trim(), success: function (response) { location = response.geocodes[0] && response.geocodes[0].location.split(“,”); }, error: function […]
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Time：2021-2-23
Today, I’d like to introduce two common biases in data analysis: selectivity bias and survivor bias. 1. Selectivity deviation Selectivity bias refers to the bias of the conclusion due to the non randomness of sample selection in the process of research, which is the data bias caused by human subjective selection. Let’s take an example […]
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Time：2021-2-13
The article is from WeChat official account.First of all, I took a picture of Kalman to show my respect Kalman filter English Kalman filter Here is a simple, one state filter Kalman filter is often used in control system and robot system, but here we mainly explain how to use it in AI big data […]
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Time：2021-1-24
When the machine learning model has a large error, which aspect should be modified. Taking the prediction of house prices as an example, we have completed the regularized linear regression and obtained the parameter vector, but when we put it into a new sample set for testing, we found that there was a huge error. […]
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Time：2021-1-23
Hello, brothers. After many days, I finally came. Today we’re going to talk about some fascinating thingsSynchronized 。 However, before reading this article, I hope you have really used this thing, or understand what it is for, otherwise it is difficult to understand what this article explains. The general order of this article is: fromNo lock […]
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Time：2020-12-24
W18Cr4V is the most widely used universal high speed steel with high hardness, red hardness and high temperature hardness, which is easy to grind. It is suitable for turning, planing, milling, reaming, broaching, drilling, gear cutting, taps, dies, etc. it is suitable for machining soft or medium hardness materials (below 300-320hb). And the production of […]
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Time：2020-12-14
With the emergence of multi process and multi thread, the competition for shared resources (devices, data, etc.) often leads to random and disordered use of resources For example, if a thread wants to output “I am fine” on the console, it is preempted by another thread just after it writes “I am fine”. The result […]
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Time：2020-12-13
With the emergence of multi process and multi thread, the competition for shared resources (devices, data, etc.) often leads to random and disordered use of resources For example, if a thread wants to output “I am fine” on the console, it is preempted by another thread just after it writes “I am fine”. The result […]
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Time：2020-12-2
The article is transferred from official account (machine learning alchemy), and it pays attention to “alchemy” to get massive free learning materials. Why study random forest now? There are still two unsolved mysteries in the random forest (for me). How to get the bagging idea of random forest62.3%And whether there is a difference between random […]
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Time：2020-11-26
Introduce: my friend small pats, sisters numerous, steady as an old dog. Sisters often wonder: little photo studentsHe knows how to eat, how to play, how to chat. He knows how to make up, how to wear, how to do reliable work and how to behaveDidn’t you ever catch up with a girl? If you […]
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Time：2020-10-20
By Peter YuCompile | FlinSource: towards science Recently, I’ve been looking for ways to speed up my research and manage my experiments, especially around writing training pipelines and managing experiment profiles, and I’ve found these two new projects are pytorch lightning and hydra. Pytorch lightning can help you write training pipelines quickly, while hydra can […]
