Python uses Pattern keyword extraction

Preparation work: 1. Install Python: First, ensure that Python is installed on the computer. It is recommended to install Python version 3. x. 2. Install pip: pip is a package management tool for Python that can be used to install and manage third-party libraries for Python. You can run 'pip install pip' from the command line to install the latest version of pip. 3. Install the Pattern library: Pattern is a Python library for data mining and Natural language processing, which can be used for text processing tasks such as keyword extraction. You can run 'pip install pattern' from the command line to install the pattern library. Dependent class libraries: 1. Pattern: Used for keyword extraction and other text processing tasks. Dataset: The Pattern library comes with some sample datasets that can be used for experiments such as keyword extraction. For example, the 'corpus' module in the Pattern library provides text data for some common languages, such as English, Chinese, French, and so on. Complete code example: The following is an example code for keyword extraction using the Pattern library, taking extracting keywords from English text as an example: python from pattern.en import keywords #Enter text text = "Python is a widely used high-level programming language for general-purpose programming." #Extract keywords result = keywords(text) #Print Results print(result) Run the above code to output the extracted keywords: ['programming', 'language', 'high-level', 'widely', 'used', 'general-purpose', 'Python'] The above code uses the 'keywords' function in the Pattern library to return the extracted keywords from the input text as a list. The input text can be preprocessed according to actual needs, such as removing Stop word, stemming words, etc., to improve the precision of keyword extraction. Supplementary explanation: -In practical applications, keyword extraction may need to be customized according to the needs of different languages or specific fields, and the keyword extraction function provided by the Pattern library is suitable for general situations. -In addition to keyword extraction, the Pattern library also provides other text processing functions, such as part of speech tagging, sentiment analysis, Named-entity recognition, and so on. You can explore on your own as needed.