| 摘要 |
Disclosed is an indexing weight (320) assigned (206) to a potential search term in a document (300), the indexing weight (320) is based on both textual and acoustic aspects of the term. In one embodiment, a traditional text-based weight (302, 304) is assigned (200) to a potential search term. This weight (302, 304) can be TF-IDF ("term frequency-inverse document frequency"), TF-DV ("term frequency discrimination value"), or any other text-based weight (302, 304). Then, a pronunciation prominence weight (318) is calculated (202) for the same term. The text-based weight (302, 304) and the pronunciation prominence weight (318) are mathematically combined (204) into the final indexing weight (320) for that term. When a speech-based search string is entered, the combined indexing weight (320) is used (206) to determine the importance of each search term in each document (300). Several possibilities for calculating the pronunciation prominence (318) are contemplated. In some embodiments, for pairs of terms in a document (300), an inter-term pronunciation distance (306) is calculated based on inter-phoneme distances (316). |
