Original Owner and Donor:
Luis Seabra Lopes and Luis M. Camarinha-Matos
Universidade Nova de Lisboa,
Monte da Caparica, Portugal
Data Set Information:
The donation includes 5 datasets, each of them defining a different learning problem:
* LP1: failures in approach to grasp position
* LP2: failures in transfer of a part
* LP3: position of part after a transfer failure
* LP4: failures in approach to ungrasp position
* LP5: failures in motion with part
In order to improve classification accuracy, a set of five feature transformation strategies (based on statistical summary features, discrete Fourier transform, etc.) was defined and evaluated. This enabled an average improvement of 20% in accuracy. The most accessible reference is [Seabra Lopes and Camarinha-Matos, 1998].
All features are numeric although they are integer valued only. Each feature represents a force or a torque measured after failure detection; each failure instance is characterized in terms of 15 force/torque samples collected at regular time intervals starting immediately after failure detection; The total observation window for each failure instance was of 315 ms.
Each example is described as follows:
Fx1 Fy1 Fz1 Tx1 Ty1 Tz1
Fx2 Fy2 Fz2 Tx2 Ty2 Tz2
Fx15 Fy15 Fz15 Tx15 Ty15 Tz15
where Fx1 ... Fx15 is the evolution of force Fx in the observation window, the same for Fy, Fz and the torques; there is a total of 90 features.
Seabra Lopes, L. (1997) "Robot Learning at the Task Level: a Study in the Assembly Domain", Ph.D. thesis, Universidade Nova de Lisboa, Portugal.
Seabra Lopes, L. and L.M. Camarinha-Matos (1998) Feature Transformation Strategies for a Robot Learning Problem, "Feature Extraction, Construction and Selection. A Data Mining Perspective", H. Liu and H. Motoda (edrs.), Kluwer Academic Publishers.
Camarinha-Matos, L.M., L. Seabra Lopes, and J. Barata (1996) Integration and Learning in Supervision of Flexible Assembly Systems, "IEEE Transactions on Robotics and Automation", 12 (2), 202-219.
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