Machine learning

PyTorch in Tensor Dimension transformation of

about PyTorch Basic data object of Tensor ( tensor ), When dealing with problems , The dimensions of data need to be changed frequently , In or...
2020-07-28 20:06 views 53

Pytorch Analysis of loss function BCELoss And BCEWithLogitsLoss

1. Let's start with the conclusion nn.BCEWithLogitsLoss be equal to nn.BCELoss+nn.Sigmoid. It is mainly used for binary classification , Multi labe...
2020-05-24 10:05 views 72

Predicting future stock trend with deep learning algorithm

Recently, we studied the deep learning algorithm to predict the future trend of stocks , I've seen many cases shared by others on the Internet , I...
2020-03-02 10:53 views 17

Recommendation system ：NDCG Evaluation index and Python Implementation method

In addition to the recommended tasks , In the binary task , It can also be calculated , The code is as follows ：# ndcgdef get_dcg(y_pred, y_true, ...
2019-11-26 15:24 views 53

machine learning —k-means,k-means++ as well as k-means|| algorithm analysis

one ,k-means1, sketch K-Means It is an unsupervised learning algorithm . The idea of the algorithm is simple , For a given sample set , According ...
2019-08-20 20:06 views 20

What are the types of variables ?

According to can study , How to measure and present , There are different ways to describe variables .** Numerical variable (Numeric)** There are ...
2019-08-17 10:29 views 30

Bayesian decision theory （Bayesian decision theory）

machine learning , Signal detection involves many methods related to Bayes , It's easy to get confused and lose touch with the essence , Nearest l...
2019-05-21 14:27 views 29

Talking about machine learning ——TF-IDF algorithm （ Principle and code implementation ）

TF-IDF The concept of TF-IDF yes Term Frequency - Inverse Document Frequency Abbreviation for , Namely “ word frequency - Reverse text frequency ”....
2019-05-16 14:51 views 38

Easy to understand Bayes formula

Easy to understand Bayes formula , First, we need to know the conditional probability formula , The concept of total probability formula , Because...
2019-05-03 20:50 views 40

get along well with Jetson Nano（ eight ） Face recognition （ two ）

Book continues , After getting the trained model , We can use this model for face recognition . of course , The scope is limited to a few people I...
2019-04-26 13:35 views 56
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