Finding objects with content-based retrieval
Include a full-text search expression as part of a query to search for objects based on
text in object content or properties. Define stop words and synonyms to help ensure that a full-text
search expression returns the expected results.
Object searching process overview CONTAINS function call to perform a full-text search.CBR query syntax introduction CONTAINS function call to perform a full-text search.CBR query result ranking ORDER BY clause of a CBR query, the Rank property permits you to return objects in order of search relevance. Based on factors such as term instance frequency, IBM® Content Search Services calculates the value of the Rank property for each returned object.Full-text search types search expression refers to the second argument that you pass to the CONTAINS function call in CBR query. The search expression indicates the type of full-text search to be performed.Token searches: Language-aware versus exact-match IBM Content Search Services parses document text into tokens. A token can be generally conceived as either a word or character sequence.Effects of text language misidentification IBM Content Search Services employs language-aware processing for both documents and search expressions. This processing requires that the text language be properly identified. For a search expression, language misidentification is impossible because a search expression is run for all indexed languages. For a document, language misidentification causes incomplete indexing, which potentially makes the document not findable by some types of searches.Text normalization Müller and Mueller, are treated as identical words. A search for either returns all instances of both.Submitting a CBR query Optimizing CBR query performance Setting stop words for full-text searches IBM Content Search Services search server ignores any stop words that are included in a full-text search expression.Setting synonyms for full-text searches IBM Content Search Services server.