Book content item search

摘要

Methods, systems, and apparatus, including computer program products are provided for ranking distinct book content items based on implicit links to other distinct book content items. The implicit links are defined based on the identification of matching features in the distinct book content items. In some implementations, the matching features are uncommon phrases in textual content of the distinct book content items. Edges representing implicit links are generated between distinct nodes representing distinct book content items in a weighted graph. Search results for distinct book content items can be ordered based on the edges connected to the distinct nodes in the weighted graph that represent the distinct book content items.

主权项

1. A computer-implemented method, comprising:
identifying image features in images from a plurality of distinct content items; determining that, for a subset of the distinct content items, the content items in the subset each have respective images that have at least a minimum number of the identified image features in common; generating implicit links between the content items in the identified subset based on determining that the content items in the subset have at least the minimum number of the identified image features in common; assigning weightings to the implicit links between the subset of the content items; and determining a rank score for at least one of the content items in the subset based at least in part on the weightings of the implicit links, the rank score being a value indicative of the importance of the content item relative to others of the distinct content items.