Patent ID: 11874860
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A computer-implemented method for creating one or more indexes for information retrieval, the method comprising:
identifying, by a processor, hinting information embedded in a document that includes text, wherein the hinting information identifies a unique expression in the document;
identifying, by the processor and using the hinting information, the unique expression in the text of the document;
creating, by the processor in response to identifying an instance of the hinting information, an index in a first set of indexes for the document by performing an n-gram analysis to index the unique expression;
switching to a morphological analysis to create, by the processor, one or more indexes in a second set of indexes for the document that index one or more sequences of words in the text of the document that are between the instance of the hinting information and one of a next instance of the hinting information and an end of the text, wherein the one or more sequences of words do not include the unique expression; and
storing, by the processor, the first and second sets of indexes for use in information retrieval.