Abstract: The present invention may be a system for creating indexes for information retrieval comprises a processor and a memory. The memory has program instructions embodied therewith. The program instructions are executable by the processor to cause the system to read a document having hinting information into a memory, where the hinting information is associated with each unique expression in an original document. The program instructions are further executable to create the indexes from the document, where a first analysis method for generating a contiguous sequence of items from a text in the document is used for creating the indexes for each sequence in the unique expression with which the hinting information is associated and a second analysis method for dividing the text into meaningful units is used for creating the indexes for each word in the text other than the unique expression.

Abstract: The present invention may be a method, system, and a computer program product. An embodiment of the present invention provides a method for creating one or more indexes for information retrieval. The method comprises reading a document having hinting information into memory; the hinting information being associated with each unique expression in an original document; and creating the indexes from the document which was read into memory. A first analysis method for generating a contiguous sequence of items from text in the document is used for creating the indexes for each sequence in the unique expression with which the hinting information is associated. A second analysis method for dividing the text into meaningful units is used for creating the indexes for each word in the text other than the unique expression. The first analysis method may be an n-gram analysis and the second analysis method may be a morphological analysis.