{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8484245","patent":{"patent_number":"US-8484245","title":"Large scale unsupervised hierarchical document categorization using ontological guidance","assignee":null,"inventors":[],"filing_date":"2011-02-08T00:00:00.000Z","publication_date":"2013-07-09T00:00:00.000Z","cpc_codes":["G06F"],"num_claims":21,"abstract":"A classification method includes constructing queries from category descriptors representing categories of a taxonomy of hierarchically organized categories. The query constructed for a category c includes a query component based on descriptors of the category c and at least one query component based on descriptors of an ancestor or descendant category of the category c. A documents database is queried using the constructed queries to retrieve pseudo-relevant documents. Language models for the categories of the taxonomy are extracted from the pseudo-relevant documents by inferring a hierarchical topic model representing the taxonomy. An input document is classified by optimizing mixture weights of a weighted combination of categories of the hierarchical topic model respective to the input document."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Large scale unsupervised hierarchical document categorization using ontological guidance","description":"A classification method includes constructing queries from category descriptors representing categories of a taxonomy of hierarchically organized categories. The query constructed for a category c inc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8484245","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8484245","citation_suggestion":"Patentable. \"Large scale unsupervised hierarchical document categorization using ontological guidance\" (US-8484245). https://patentable.app/patents/US-8484245","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8484245","json":"https://patentable.app/api/llm-context/US-8484245","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:10:32.127Z"}