query complexity. Also, this selection process is operationalized with a classifier, which is a smaller LM trained to predict the complexity level of incoming queries with automatically collected labels, obtained from actual predicted outcomes of models and inherent inductive biases in datasets. This approach offers a balanced strategy, seamlessly adapting between the iterative and single-step retrieval-augmented LLMs, as well as the no-retrieval methods, in response to a range of query complexities. We validate our model on a set of open-domain QA datasets, covering multiple query complexities, and show that ours enhances the overall efficiency and accuracy of QA systems, compared to relevant baselines including the adaptive retrieval approaches. Code is available at: this https URL.
Comments:NAACL 2024Subjects:Computation and Language (cs.CL); Artificial Intelligence (cs.AI)Cite as:arXiv:2403.14403 [cs.CL] (or arXiv:2403.14403v2 [cs.CL] for this version) https://doi.org/10.48550/arXiv.2403.14403
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