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Course Introduction：NLTK is suitable for beginners of NLP. It is simple to install and provides a complete corpus and clear interface. It can complete basic tasks such as word segmentation, part-of-speech annotation, naming entity recognition, etc. The usage process includes installing pipinstallnltk, downloading corpus such as punkt and wordnet, importing modules and calling functions to process text, such as word_tokenize to implement word segmentation, pos_tag for part-of-speech annotation; it also supports stop word filtering, word form restoration and other functions, but attention should be paid to problems such as text preprocessing and weak Chinese support. It is recommended to use spaCy or transformers for large-scale processing.

2025-07-24 comment 0  304

Course Introduction：Receiving news from Chita.ru using Python It is mainly inspired by Python script for news parsing, statistical analysis of text segmentation and word cloud generation as implemented in projects on the CSDN platform. I also wrote

2024-11-27 comment 0  882

Course Introduction：Word Boundary Semantics in PHP Regular ExpressionsIn PHP, word boundaries are implemented using the \b metacharacter, which matches transitions between word characters (\w) and non-word characters (\W). However, its behavior can be nuanced, as exempl

2024-10-21 comment 0  398

Course Introduction：MySQL supports full-text search, but it needs to be paid attention to its mechanism and limitations. Full-text index is based on "word", supports natural language and Boolean pattern query, and is only applicable to CHAR, VARCHAR and TEXT type columns. 1. Creation methods include adding or adding existing tables when creating tables; 2. Use MATCH() AGAINST() in query, and you can choose natural language or Boolean mode; 3. Notes include the default minimum word length is 4. Chinese word segmentation needs to be processed manually; 4. Limitations include word segmentation problems, performance bottlenecks, update delays and weak fuzzy matching. It is recommended to combine tools such as Elasticsearch to make up for the shortcomings.

2025-07-08 comment 0  729

Course Introduction：This article presents a modified approach to truncating strings in PHP, specifically considering word boundaries. By prioritizing the preservation of whole words, it ensures that truncated excerpts remain complete and semantically intact, even when t

2024-10-24 comment 0  1174

Course Elementary  13819

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82352

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13173

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24624

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27483

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.