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Title:
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Incremental learning of skills in a task-parameterized Gaussian Mixture Model
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Author:
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Hoyos, Jose; Prieto, Flavio; Alenyà Ribas, Guillem; Torras, Carme
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Other authors:
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Institut de Robòtica i Informàtica Industrial; Universitat Politècnica de Catalunya. ROBiri - Grup de Robòtica de l'IRI |
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Abstract:
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The final publication is available at link.springer.com |
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Abstract:
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Programming by demonstration techniques facilitate the programming of robots. Some of them allow the generalization of tasks through parameters, although they require new training when trajectories different from the ones used to estimate the model need to be added. One of the ways to re-train a robot is by incremental learning, which supplies additional information of the task and does not require teaching the whole task again. The present study proposes three techniques to add trajectories to a previously estimated task-parameterized Gaussian mixture model. The first technique estimates a new model by accumulating the new trajectory and the set of trajectories generated using the previous model. The second technique permits adding to the parameters of the existent model those obtained for the new trajectories. The third one updates the model parameters by running a modified version of the Expectation-Maximization algorithm, with the information of the new trajectories. The techniques were evaluated in a simulated task and a real one, and they showed better performance than that of the existent model. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Robòtica
-Programming by demonstration
-Robot learning
-Incremental learning
-ROBOTS
-cooperative systems
-learning (artificial intelligence)
-uncertainty handling
-Classificació INSPEC::Cybernetics::Artificial intelligence::Learning (artificial intelligence) |
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Rights:
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Document type:
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Article - Submitted version
Article |
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