Many visual datasets are traditionally used to analyze the performance of different learning techniques. The evaluation is usually done within each dataset, therefore it is questionable if such results are a reliable indicator of true generalization ability. We propose here an algorithm to exploit the existing data resources when learning on a new multiclass problem. Our main idea is to identify an image representation that decomposes orthogonally into two subspaces: a part specific to each dataset, and a part generic to, and therefore shared between, all the considered source sets. This allows us to use the generic representation as un-biased reference knowledge for a novel classification task. By casting the method in the multi-view setting, we also make it possible to use different features for different databases. We call the algorithm MUST, Multitask Unaligned Shared knowledge Transfer. Through extensive experiments on five public datasets, we show that MUST consistently improves the cross-datasets generalization performance. © 2013 Springer-Verlag.

Beyond dataset bias: Multi-task unaligned shared knowledge transfer / Tommasi, Tatiana; Quadrianto, Novi; Caputo, Barbara; Lampert, Christoph H.. - 7724 LNCS:PART 1(2013), pp. 1-15. (Intervento presentato al convegno 11th Asian Conference on Computer Vision, ACCV 2012 tenutosi a Daejeon; South Korea) [10.1007/978-3-642-37331-2_1].

Beyond dataset bias: Multi-task unaligned shared knowledge transfer

TOMMASI, TATIANA;CAPUTO, BARBARA;
2013

Abstract

Many visual datasets are traditionally used to analyze the performance of different learning techniques. The evaluation is usually done within each dataset, therefore it is questionable if such results are a reliable indicator of true generalization ability. We propose here an algorithm to exploit the existing data resources when learning on a new multiclass problem. Our main idea is to identify an image representation that decomposes orthogonally into two subspaces: a part specific to each dataset, and a part generic to, and therefore shared between, all the considered source sets. This allows us to use the generic representation as un-biased reference knowledge for a novel classification task. By casting the method in the multi-view setting, we also make it possible to use different features for different databases. We call the algorithm MUST, Multitask Unaligned Shared knowledge Transfer. Through extensive experiments on five public datasets, we show that MUST consistently improves the cross-datasets generalization performance. © 2013 Springer-Verlag.
2013
11th Asian Conference on Computer Vision, ACCV 2012
Computer Science (all); Theoretical Computer Science
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Beyond dataset bias: Multi-task unaligned shared knowledge transfer / Tommasi, Tatiana; Quadrianto, Novi; Caputo, Barbara; Lampert, Christoph H.. - 7724 LNCS:PART 1(2013), pp. 1-15. (Intervento presentato al convegno 11th Asian Conference on Computer Vision, ACCV 2012 tenutosi a Daejeon; South Korea) [10.1007/978-3-642-37331-2_1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/915656
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