Further research should be carried out to improve our combination and fusion systems through a more detailed analysis on the choice of parameter settings, explore the use of fuzzy clustering, explore the effects of the aggregation of similar entities and improve combination and fusion phases.
Regarding the first point, further studies are needed to perform an in depth analysis on the setting of both graph embeddings and clustering parameters. The first in order to obtain better entities representations through a more effective traversal of nodes and edges of the graph. The second in order to obtain better clusters both as regards their completeness and consistency.
Regarding the second point, it would be interesting to explore fuzzy clustering because it would allow for a more faithfully representation of the reality. It is in fact natural to think that an entity can belong to more than one cluster.
Regarding the third point, aggregate similar entities into a new one could overcome the pooling problem described. In this way we would in fact obtain a new entity containing all the useful information of the other similar ones. This approach requires a corresponding change in the set of relevance judgments, which must be subjected to the same process
in order to obtain a match between entities in the evaluation phase.
Regarding the fourth point, in order to improve our systems performances, it would be
also useful to implement more sophisticated ways to add entities into the final run. In particular, further studies are needed to better understand how, how many and which entities to insert into the final run considering their rank, score, and belonging cluster.
It would also be useful to try the retrieval model BM25F based on fielded documents, in this way we could even consider the type of relationship described by each triple.
With these last considerations we have reached the end of this journey, I hope this presentation has intrigued you and provided food for thought. For those wishing to learn more about what I have shown, my thesis can be consulted through the Padua Thesis portal [1]
Thank you!