{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521662","patent":{"patent_number":"US-8521662","title":"System and methods for finding hidden topics of documents and preference ranking documents","assignee":null,"inventors":[],"filing_date":"2011-04-03T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06N","G06F"],"num_claims":9,"abstract":"Systems and methods are disclosed to perform preference learning on a set of documents includes receiving raw input features from the set of documents stored on a data storage device; generating polynomial combinations from the raw input features; generating one or more parameters; applying the parameters to one or more classifiers to generate outputs; determining a loss function and parameter gradients and updating parameters determining one or more sparse regularizing terms and updating the parameters; and expressing that one document is preferred over another in a search query and retrieving one or more documents responsive to the search query."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System and methods for finding hidden topics of documents and preference ranking documents","description":"Systems and methods are disclosed to perform preference learning on a set of documents includes receiving raw input features from the set of documents stored on a data storage device; generating polyn","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521662","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-8521662","citation_suggestion":"Patentable. \"System and methods for finding hidden topics of documents and preference ranking documents\" (US-8521662). https://patentable.app/patents/US-8521662","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521662","json":"https://patentable.app/api/llm-context/US-8521662","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:57:17.276Z"}