Otherwise, inflectional forms of a word would not appear correctly in the search results. Root and Root Shape Reduction: To search more effectively, words must be reduced to their root words.This identification ensures that the search engine also considers parts of compound words to be relevant. Multi-word group identification: Groupings of words must be recognized as such.It makes sense not to treat words like “and” or articles such as “the” as representative of the document’s content. Stop Word Elimination: Stop words are those expressions that only contribute insignificantly to the content of a text.Inquiries can be extended or improved by using the following techniques: With this method, the system reads related terms from the best search results and rates them as relevant to the search. To avoid depending on user-cooperation, they can use so-called “pseudo feedback”. The system makes use of thesauri and user-feedback to find those synonyms. That means, for example, that synonyms are used which provide better results. To avoid this, information scientists have introduced query modification, a system that automatically changes the entered search query. The first result should ideally provide the best answer to the users’ question.Ī major problem in information gathering is the behavior of users themselves: wildly inaccurate requests bring up incorrect or inadequate information. In addition, the information retrieval system should also evaluate information to provide users with a data sequence. The user might not be looking for a financial institution but information on a geographical feature relating to rivers. This happens, for example, with homonyms –words that have multiple meanings.
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