Okay, I need to create a Wikipedia-style document about "PoS" under the categories of Technology → Data Science → Analysis. Let me start by understanding what PoS stands for. Oh right, it's Part-of-Speech tagging.

First, the structure: H1 title, then an overview section. Then sections with H2 and H3. I should make sure each part is detailed but clear. The user wants at least 800 characters, so I need to elaborate enough.

Starting with the introduction. What's PoS? It's a process in NLP where words are labeled as nouns, verbs, etc. Need to mention its importance in data science for text analysis. Maybe include some applications like machine translation or sentiment analysis.

Next sections: maybe "Definition and Purpose" as H2. Here, explain what PoS is, the types of tags (like noun, verb), and why it's important. Then a section on "Techniques and Methods" with H3s for rule-based, statistical, and neural network approaches. For each method, give examples like Brill's algorithm or LSTM models.

Another H2 could be "Applications in Data Science". Here, list areas where PoS is used: information retrieval, text mining, etc. Maybe include a table of applications with brief descriptions.

Then a section on challenges, like ambiguity in language and handling new words. Also mention evaluation metrics like accuracy and F1 score.

Need to add references or related documents at the end. Maybe link to NLP basics or machine learning techniques.

Check for technical terms: explain any jargon. For example, when mentioning "statistical models", maybe briefly describe them as algorithms that learn from data.

Make sure the language is clear and not too technical without explanations. Avoid markdown except for headers and lists. Use code blocks if there's an example, but since it's about PoS, maybe not necessary unless showing a tagger output.

Wait, the user said to use H1, H2, H3. So the title is H1. Then sections like "1. 개요" as H2? Or maybe the first section after the title is an H2. Let me structure it properly.

Also, need to ensure that each part flows logically. Start with definition, then methods, applications, challenges, and references. Keep paragraphs concise. Maybe use bullet points for techniques or applications.

Check the length: 800 characters? Wait, the user said "최소 800자 이상의 충분한 내용" which is about 800 characters, but that's very short. Probably meant 800 words. But maybe they mean 800 characters in Korean. Either way, I'll aim for a detailed document.

Make sure to include examples of PoS tags like "NN" for noun, "VB" for verb. Maybe mention common tag sets like Penn Treebank.

Avoid any markdown except the required headers and lists. Use bold or italics if needed but not overdo it.

Double-check that all sections are covered: title, overview, detailed sections with H2/H3, references. Ensure accuracy in explaining PoS techniques and their applications.