Yi Li
 

Ph.D student, ECE Dept, University of Maryland

College Park, MD 20742

liyi AT umiacs DOT umd DOT edu

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7

Social Signal Processing

Social intelligence is the facet of our cognitive abilities that guides us through the complex web of our everyday interactions, whether these require us to be a respected colleague on the workplace, a careful parent at home, a leader in our community, or simply a person others like to have around in a moment of relaxation.

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6

Coordinated Action

Coordinated action is one of the basic abilities for social interactions. All animal species grouping for defensive, reproductive or hunting needs have evolved complex communicative behaviors to obtain coordinated action (Frith, 2008). Joint action in humans has been formalized in many ways and constitutes one of the most interesting and recent chapters of cognitive neuroscience (Sebanz, 2006). Yet the quantification of this ability remain somewhat elusive, especially outside controlled experimental settings. The main problem is related to the complexity of the topic due to the large space of parameters one might want to consider in a numerical analysis. Furthermore, the formal analyses of such issues require also the clear definition of some metrics to define the efficacy of inter-individual action coordination.

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4

Sparse representation of actions

A central problem in today’s motor control analysis is how to represent human motion using basic primitives that could be used to synthesize any action. Motivated by the hypothesis of muscle synergies, we proposed a iterative algorithm for automatically finding bases human motion capture (Mo-Cap) sequences. The idea is that different joints are activated coherently to perform actions. The activation for individual joint is characterized by a set of sparse spikes with positive value. The bases are short and generic. Each action can be represented by the sum of the convolution between the activation and corresponding bases.
 

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TBD

3

Artistic Children Diagnose

TBD

2

Parkinson Disease Diagnose