By Jose Nuñez
Information Retrieval Systems (IRS) use phrases to retrieve, organize, describe and index documents. The phrases identified, normally predict the presence of other phrases in those documents. Documents are then indexed, in accordance to the existing phrases. The index is partitioned into multiple ones, including a primary index and secondary. The primary one stores phrases with relevant rank ordered documents. The secondary one stores excess documents in document order.
One application of this concept is meaning-based search. This allows web users to locate information that is close in meaning to concepts being searched. Searching is done by determining a semantic distance between the first and second meaning differentiator, since this distance r View the rest of this article
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