Local versus Global Strategies in Social Query Expansion
Omar Alonso, Vasileios Kandylas, Serge-Eric Tremblay · arXiv (Cornell University) · 2019
Link sharing in social media can be seen as a collaboratively retrieved set of documents for a query or topic expressed by a hashtag. Temporal information plays an important role for identifying the correct context for which such annotations are valid for retrieval purposes. We investigate how social data as temporal context can be used for query expansion and compare global versus local strategies for computing such contextual information for a set of hashtags.