{"slug": "signtrace-describe-a-sign-find-the-word", "title": "SignTrace: Describe a Sign, Find the Word", "summary": "SignTrace, a natural-language reverse-lookup system for a Chinese sign-language dictionary of 6,699 entries, achieved 94.0% Hit@1, 97.4% Hit@9, and a mean reciprocal rank of 0.9540 on a 500-query dictionary-derived benchmark, according to an arXiv paper (2609.30295v1). The system combines LLM-based dictionary enrichment, action extraction, dictionary-style rewriting, seven-channel retrieval, and candidate reranking, which raised Hit@1 from 71.8% to 94.0%; median query-processing time was 13.37 seconds with six concurrent queries. SignTrace has been deployed for user trials with positive informal feedback, though the authors note the dictionary-derived wording and prior selection in the benchmark limit generalization to descriptions independently produced by users.", "body_md": "arXiv:2609.30295v1 Announce Type: new \nAbstract: Identifying an unfamiliar sign is difficult when a learner remembers its movement but does not know its meaning or formal feature codes. SignTrace addresses this longstanding reverse-lookup problem through natural-language access to a Chinese sign-language dictionary. The system integrates LLM-based dictionary enrichment, action extraction, dictionary-style rewriting, seven-channel retrieval, and candidate reranking over 6,699 entries. It has been deployed for user trials and has received positive informal feedback. Evaluation on a dictionary-derived benchmark of 500 movement-description queries yields 94.0% Hit@1, 97.4% Hit@9, and a mean reciprocal rank of 0.9540. Reranking increases Hit@1 from 71.8% to 94.0%, while component analyses show the contribution of enriched entry descriptions. Median query-processing time is 13.37 seconds with six concurrent queries. By connecting everyday movement descriptions to documented signs and meanings, SignTrace provides a practical tool for identifying unfamiliar signs. Dictionary-derived wording and prior selection within the benchmark limit generalization to descriptions independently produced by users.", "url": "https://wpnews.pro/news/signtrace-describe-a-sign-find-the-word", "canonical_source": "https://arxiv.org/abs/2609.30295", "published_at": "2026-09-28 04:00:00+00:00", "updated_at": "2026-09-28 04:18:27.148807+00:00", "lang": "en", "topics": ["natural-language-processing", "large-language-models", "artificial-intelligence"], "entities": ["SignTrace", "arXiv"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/signtrace-describe-a-sign-find-the-word", "markdown": "https://wpnews.pro/news/signtrace-describe-a-sign-find-the-word.md", "text": "https://wpnews.pro/news/signtrace-describe-a-sign-find-the-word.txt", "jsonld": "https://wpnews.pro/news/signtrace-describe-a-sign-find-the-word.jsonld"}}