Adaptive Query Expansion by combining Fields (AdapQEF) is a low-cost adaptive decision mechanism based on pre-retrieval performance prediction techniques. In the proposed adaptive query expansion mechanism, the expansion of the query is made by QEF expansion. However, it can be either local, using documents in the local collection, or external, using an external resource. The adaptive mechanism predicts the benefit of query expansion using either option and adopts the most effective one. Query expansion will be disabled if both options are predicted to lead to the degradation of the query performance.
Adaptive Query Expansion by combining Fields (AdapQEF) is a low-cost adaptive decision mechanism based on pre-retrieval performance prediction techniques. In the proposed adaptive query expansion mechanism, the expansion of the query is made by QEF expansion. However, it can be either local, using documents in the local collection, or external, using an external resource. The adaptive mechanism predicts the benefit of query expansion using either option and adopts the most effective one. Query expansion will be disabled if both options are predicted to lead to the degradation of the query performance.
The related paper can be found here:Combining fields for query expansion and adaptive query expansion