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Elenco Pubblicazioni - Publications (1524)

Metric indexing research is concerned with the efficient evaluation of queries in metric spaces. In general, a large space of objects is arranged in such a way that, when a further object is presented as…
Abstract. Fisher Vector (FV) and deep Convolutional Neural Network (CNN) are two popular approaches for extracting e ective image representations. FV aggregates local information (e.g., SIFT) and have been state-of-the-art before the recent success of…
Abstract: Surrogate Text Representation (STR) is a profitable solution to efficient similarity search on metric space using conventional text search engines, such as Apache Lucene. This technique is based on comparing the permutations of some…
During the last decade, various local features have been proposed and used to support Content Based Image Retrieval and object recognition tasks. Local features allow to effectively match local structures between images, but the cost…
Most research into similarity search in metric spaces relies upon the triangle inequality property. This property allows the space to be arranged according to relative distances to avoid searching some subspaces. We show that many…