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Common loss function learning essays Learning objectivesKnow the loss function of classification taskKnow the loss function of the regression task In deep learning, loss function is a function used to measure the quality of model parameters. The measurement method is to compare the difference between network output and real output. The name ...

Competition address: https://leetcode-cn.com/contest/weekly-contest-240 First of all, I wish you a happy mother's Day! Let's look at the question Question 1 subject Enter a two-dimensional integer array logs, where l o g ...

PYTHON reptile diary 01 Record your learning reptile diary Choose python as the programming language 1. Environmental preparation python3.6+ mysql pycharm 2. Ideas The goal is to climb the top 100 of the cat's eye ​ 1. Analyze the law of url ​ https://maoyan.com/board/4?offset=10 Find their URLs and use the url parameter offset as th ...

preface The actual combat series of this project is mainly based on the tutorials on the network. It mainly refers to the ideas and specific implementation codes in learning machine learning with Digo. However, the version used in the book should be python2. Some codes also have problems, some key steps are omitted, and some are syntax problem ...

scenario analysis Suppose the price of article a is 20.22 yuan / kg in 2000, 20.32 yuan / kg in 2001 and 21.01 yuan / kg in 2002. The middle price is omitted. Please predict the price of article a in 2022?This is a very simple linear regression case. We all know that we can predict the price in 2022 by drawing a straight line. So how to find ...

summary 1 string String is a container type data type (sequence), with 'or' 'or' 'or' 'as the container tag Each independent symbol in the string is an element of the string The string is immutable; Strings are ordered (subscript operation is supported) Element of string: each symbol in quotation marks is an element of string. The el ...

problem You have a piece of code that accesses elements in lists or tuples through subscripts, but this sometimes makes your code difficult to read, so you want to access elements by name. Solution ​ collection. The namedtuple () function helps you solve this problem by using an ordinary tuple object. This function is actually a factory meth ...

Author home page: San Francisco wyx "Author profile": CSDN top200, Alibaba cloud blog experts, Huawei cloud sharing experts, and high-quality creators in the field of network security 1, Functional analysis A brief analysis of the functions of the website is as follows: The user is required to submit parameters in the address ...

The use of flask SQLAlchemy encapsulates and optimizes SQLAlchemy: Flask Sqlalchemy is a plug-in of the flask frameworkFlask SQLAlchemy is a plug-in that simply encapsulates SQLAlchemyIt makes it easier for us to use sqlalchemy in Flask. 1. Installation: pip install flask-sqlalchemy 2. Key points of using flask Sqlalchemy: 2.1 database co ...

Basic data structure 1. Series For a Series, the most commonly used attributes are values, index, name, and dtype s = pd.Series(np.random.randn(5),index=['a','b','c','d','e'],name='This is a Series',dtype='float64') s a -0.152799 b -1.208334 c 0.668842 d 1.547519 e 0.309276 Name: This is a Series, dtype: float64 Accessing Ser ...