Optimizing Component Combination in a Multi-Indexing Paragraph Retrieval System
Table 2: Average weights given to each component across the 20 cross-validation runs of the Differential Evolution algorithm
['[BOLD] Component', '[BOLD] Average Weight']
Finally, our parameter tuning experiment gives us some insights on the added value of each component in our system; if a component is consistently given a weight of 0 by the optimization algorithm, we can conclude it is not very valuable for the overall performance of our system. We can see that more than 90% of the total weight was concentrated among three specific features: Lemmatization, Synonyms, and the 2-Grams evaluator. This preference for a very limited subset of components might suggest that our choice of components to implement might not have been the best, or that some of them might require additional fine-tuning.