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Introduction: In this paper, the time-frequency correlation distribution algorithm is used to analyze the active sonar detection sound signal from a submarine in video, but it is still unable to get the result of the frequency change that the submarine and its supervisor hear. The exact reason is not yet understood. Keywords: Submarine, Sonar, ...

Article catalogue Problem descriptionSensor model 1. pinhole camera model 2. Depth rangingcode implementationsummaryReference articles 1, Problem description Three dimensional reconstruction aims to represent three-dimensional objects as mathematical models that are easy to deal with in computer. In recent years, due to the rapid ...

(1) What is SLAM?    in short, slam is to locate and pose the robot where GPS cannot be used, build incremental maps, and realize the autonomous positioning and navigation of the robot. Like a blind man, he explores the environment with his own hands in the unknown environment, and constantly corrects the map built by his heart to th ...

1, Problem description In the actual daily life, people often encounter the following problems: find the function in a given definition field X f ( x ) f(x) The optimal value corresponding ...

The generalization ability of the model can be improved through data enhancement during training, and its accuracy can also be improved through test enhancement (sacrificing a certain speed). This operation is common in the game. The methods of image enhancement include affine change (translation, scaling, rotation, mirror image, etc.) and colo ...

Parameter setting There are often problems in XGB classification There are parameters to adjust the sample imbalance scale_pos_weight ， Usually, we enter the ratio of negative sample size to positive sample size in the parameter Classification case Create unbalanced dataset import numpy as np import xgboost as xgb im ...

Multiple Features Multiple linear regression, which includes multiple variables, such as house age, area, number of rooms, etc., is marked as follows: Suppose the function becomes: It can be understood as: θ 0 means base price θ 1 is the price per square meter, and X1 is the number of square meters θ 2 is the price of each ...

catalogue Chapter 6 learning related skills 6.1 parameter update 6.1.1 explorer's story 6.1.2 SGD 6.1.3 disadvantages of SGD 6.1.4 Momentum 6.1.5 AdaGrad 6.1.6 Adam 6.1.7 which update method to use 6.1.8 comparison of update methods based on MNIST dataset 6.2 initial value of weight 6.2.1 can the initial value of weight be set to 0 ...

Target level emotion analysis based on SKEP pre training model As we all know, human natural language contains rich emotional colors: expressing people's emotions (such as sadness and happiness), expressing people's mood (such as burnout and depression), expressing people's preferences (such as like and hate), expressing people's personality c ...

This article is translated from Python & APIs: A Winning Combo for Reading Public Data Article code address https://github.com/realpython/materials/tree/master/consuming-apis-python?__s=kea6w26ii09uqhijmy0b Python+API: a perfect match for reading public data go to top Learning to use different APIs is a magical skill, and many applica ...