Programmer Group

  1, Game problem analysis [Alibaba cloud Tianchi algorithm challenge] Introduction to zero basics NLP - News Text Classification - Day1 - Game Title Understanding_ 202xxx blog - CSDN blog 2, Data reading After downloading the data, anaconda and python 3.8 are recommended for data reading and model training First install the required m ...

introduction In my opinion, genetic algorithm is an algorithm that can be considered when adjusting parameters. It is a method that can find the global optimal parameters. When the data range that needs to be adjusted is large, the exhaustive method is obviously not a good choice! Here, the genetic algorithm is implemented through a simple exa ...

ID3 decision tree algorithm background knowledge ID3 algorithm was first proposed by J. Ross Quinlan at the University of Sydney in 1975. The core of the algorithm is "information entropy". By calculating the information gain of each attribute, ID3 algorithm considers that the attribute with high information gain is a good attr ...

1, What is a decision tree Decision tree is a method of machine learning. The generation algorithms of decision tree include ID3, C4.5 and C5.0. Decision tree is a tree structure, in which each internal node represents a judgment on an attribute, each branch represents the output of a judgment result, and finally each leaf node represents ...

Here we discuss six mistakes that novices are prone to make. These mistakes have nothing to do with the API or syntax of the tools you use, but are directly related to your level of knowledge and experience. In practice, if these problems occur, there may not be any error prompt, but it will bring us great trouble in application. Read large fi ...

Source: Data STUDIO Author: Yun Duojun 1. Brier Score The accuracy of probability prediction is called "calibration degree", which is a way to measure the difference between the probability predicted by the algorithm and the real result. A commonly used indicator is called Brill score, which is calculated as the mean square err ...

Target detection tricks (based on detectron2) Try correctly Cutting Because the target is too small relative to the whole picture, the data is cropped (in addition to the cutting size, the overlapping size should also be paid attention to. The overlapping size should be slightly larger. Try to keep each target intact so as not to damage the ...

preface For work reasons, you need to contact the XGBoost model. For convenience, in addition to the Linux server provided by the company, I also installed XGBoost locally. Since then, I have encountered various problems and even reinstalled anaconda3, which is a history of blood and tears. Therefore, I would like to record all kinds of pr ...

1, Prepare 1. Install ubuntu system No system, play chicken feather!!! Of course, install a system first. I won't write the tutorial. Just search online. Naturally, it's a pile! Here I put a link for my reference, which is very detailed (the author said: "the most detailed in absolute history"), especially for Xiaobai!!! For your ...

1, Decision tree Decision Tree (Decision Tree) is a decision analysis method that calculates the probability that the expected value of net present value is greater than or equal to zero by forming a Decision Tree on the basis of knowing the occurrence probability of various situations, evaluates the project risk and judges its feasibility ...