Xu Zi rain: Baidu Word Segmentation technology research and speculation

Baidu search engine in the field of Chinese market share the first position, strictly speaking is that he has a very good word segmentation technology. Of course, the Advanced word segmentation technology we can not ascertain. But we can get a glimpse of the "leopard" from some superficial "tubes". Today, Hangzhou SEO for everyone to talk about Baidu participle of a little basic speculation.

First of all, we want to understand the conditions of Baidu participle, not all words will have word generation, for example, we search "college students", return the results, we will see accurate matching, then Baidu on the word did not have a participle processing, look at the following figure:

　　

And we search "movie download", Baidu will split these words into "movie", "Download" and "movie Download", the following figure:

　　

So a friend guess will Baidu to three words to the limit, began to implement participle it? We can test many times, this argument is quite market, but later I search the keyword when found a problem, if a word has been Baidu Word library for a separate word, then no matter how long he, Baidu will also first recommend the exact matching page, and then recommend Word segmentation matching page.

For example, if you're searching, "believe it or not," in general, such sentences must be handled by participle, but because of last year's train event, this sentence has become common words, Baidu has also been more recognition of the word, will be his income word library, then it can achieve accurate matching. The following figure, the title of the page are accurate matching, no see word matching:

　　

Conclusion guess: Users search for a keyword, Baidu will be based on their own word library advanced line accurate matching, if the word is a very common word, in their own thesaurus has established terms, then Baidu will call the relevant Web page results, if the thesaurus does not exist on the word processing, resulting in the search results will also produce some participle processing , as for the results ranked more influential factors, such as the weight of the site will affect the search results rankings, the specific needs of in-depth analysis, here is not to swim.

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