Chinese word segmentation techniques are crucial for search engines to process user-submitted queries. When users submit a query, the search engine uses word segmentation to break down phrases according to certain specifications, dividing long-tail keywords into several parts. This helps summarize the main content of a passage and enables users to find the information they need more quickly.
The most commonly used word segmentation methods in search engines include three types:
1. String matching method (which generally has three types: 1. Forward maximum matching; 2. Reverse maximum matching; 3. Minimum segmentation).
2. Semantic segmentation method.
3. Statistical segmentation method.
String Matching Method: When searching "I like playing pet connect" on Baidu, the first-ranked result often matches the title and the searched long-tail keyword. This shows that under similar website conditions, pages with matching titles are displayed first. Therefore, the long-tail keyword in the article title is very important for ranking. On the second page of Baidu's results for "I like playing pet connect," using Baidu's snapshot feature clearly shows that the long-tail keyword has been split into "I like, play, pet connect." Later, it was further segmented into "I, like to play, pet, connect," which represents the minimum segmentation method.
Semantic Segmentation Method: When an input string contains three Chinese characters, Baidu's word segmentation directly accesses the database index vocabulary. However, when the string length exceeds four Chinese characters, Baidu's word segmentation divides the word into several characters. For example, searching "electricdongche" on Baidu.
Statistical Segmentation Method: The more frequently adjacent characters appear together, the more likely Chinese word segmentation will treat them as a single word. For instance, entering the character "net" in Baidu also highlights "website," indicating that the characters "net" and "site" appear together frequently. Statistical segmentation has already included "website" in the vocabulary.
Understanding Baidu's Chinese Word Segmentation:
In Chinese word segmentation, one point is emphasized: "According to different lengths of priority matching, it can be divided into maximum (longest) matching and minimum (shortest) matching"; the spacing of long-tail keywords in articles also affects the ranking. For example, "I like playing pet connect" is segmented into "I, like, play, pet, connect, see" on the thirteenth page of Baidu’s results. The weight of words obtained through full-word matching is higher than that of separated words. Based on observations, Baidu mostly uses forward matching. After segmenting a sentence, Baidu removes meaningless words from the sentence.
Related thematic articles:
- Brick chimney maintenance
- Baidu's new SEO strategy with manual intervention
- Brick chimney demolition
- Insufficient quantity