What I'm gonna write is very complicated and dfficult for me to express in English. If I write something incomprehensible, I apologize it.
Tag will help files to be categorized. This function will help seach engine because the data which has no letter information, such as picture and movie, can't be categorized without tag. In addition, if all Web pages are categorized by tag in advance, it will make search easy for search engine.
Tag has the potential to enable the Semanric Web. In Semantic Web, tag will categorize information by its meaning, and search engines can search infromation based on the purpose or meaning of the query. Oh, I can't describe it well. Just imagine that you put the query like "What is a picture painted by the Impressionists in 19c?". Semantic Web can answer your question. Search engine will find the file which has the tags "19c", "Impressionist", "picture". Usual Web will only match words in query with text, so such search is impossible. This is amazing.
However, using tag has one problem. Tag is not necessarily visible. Some blog shows it, but it is not always appeared. Therefore, if someone put irrelevant tags on his or her Web page, the readers can't find whether its tag is correct. It is possible to put irrelevant tag on the page to make the page searched for every words and ranked higher. That's why Google does not emphasize tag so much. When Google searched the Web pages just by matching query with contents, they had to struggle with those who attempted to be ranked higher by distributing many irrelevant words in their page. They don't want to go back those days. So to utilize tag for search, it is necessary to prepare countermeasure to avoid such mess.
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2 comments:
I think you are missing a very imporant part of the whole tagging argument...With many search engines doing whole document searches they might find alot of documents irrelevant to what you really need..Tags now aloow for an author to make there papers more search friendly helping the internet become eaiser
Thank you for pointing that. You're right. Tag will make search easier. There is no doubt aboout it. But I think there is also a potential to be used for wrong way. I just think we should recognize both aspects of tag.
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