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Official account: Special HouseAuthor: PeterEditor: Peter Hello, I'm Peter~ This article introduces the four row column conversion methods in Pandas, including: melttranspose T or transferwide_to_longexplode (explosion function) Finally, answer a data processing question asked by a reader friend. Pandas row column conversion There a ...

Original link: http://tecdat.cn/?p=24721  In this paper, I use two examples that may be of interest to population ecologists to illustrate the use of "JAGS" to simulate data: the first is linear regression, and the second is to estimate animal survival rate (formulated as state space model).Recently, I have been trying to simulate dat ...

Because the course assignment needs to carry out some analysis on NLP, and there is no particularly useful code on the Internet, so I just write a crawler myself, which can crawl the microblog content, comment content and microblog publisher related information according to the topic name. At present, there is no special problem in the author t ...

Hello, I'm JiejieToday I'm going to introduce a super liver product! Pandas # is a tool based on NumPy, which is created to solve data analysis tasks. It provides a large number of functions and methods that enable us to process data quickly and conveniently. The 20 [divided into 15 groups] functions introduced in this article are definitely da ...

Numpy has long been a universal choice for Python developers to perform array operations. It is built based on C language, which makes it a fast and reliable choice to perform array operations, and it has become a necessary basic library for machine learning and data science.In this article, I sorted out some fragments of NumPy code, which are ...

1 source data This time, we use the data of common words in teenagers' social networks to conduct market research The method used is K-Means clustering method, and the principle is not introduced 2 data exploration and preprocessing # Data preprocessing import pandas as pd teenager_sns = pd.read_csv('teenager_sns.csv') # View the last 20 ro ...

python crawler, crawling with scratch After learning the crawler for a period of time, I was ready to do a crawler exercise to consolidate it, so I chose the daily fund to crawl the data, and the problems and solutions encountered were recorded as follows. Attach code address: https://github.com/Marmot01/python-scrapy- Crawling idea I Analys ...

Focus on official account dry cargo WeChat public: K brother crawler, keep sharing crawler advance, JS/ Android reverse technology dry goods!statementAll contents in this article are for learning and communication only. The packet capturing content, sensitive website and data interface have been desensitized. It is strictly prohibited to use th ...

Article catalog preface1, split() split and join() merge2, Small knowledge points 1. String resident mechanism and string comparison2. Common search methods3. String formatting4. Variable string5. Basic operators6. Sequence (very important): string, list, tuple, dictionary, set7. Addition and deletion of list elements8. Deletion of l ...

neo4j Chinese document - Getting Started Guide Neo4j v4.4 permit: Knowledge sharing 4.0 neo4j Neo4j is the world's leading graphics database. The architecture is designed to optimize the management, storage, and traversal of nodes and relationships. Graph database adopts attribute graph method, which is good for traversal performance and opera ...