Goto

Collaborating Authors

 motor program


An Active Inference Agent for Simulating Human Translation Processes in a Hierarchical Architecture: Integrating the Task Segment Framework and the HOF taxonomy

Carl, Michael

arXiv.org Artificial Intelligence

In this paper, we propose modelling human translation production as a hierarchy of three embedded translation processes. The proposed architecture replicates the temporal dynamics of keystroke production across sensorimotor, cognitive, and phenomenal layers. Utilizing data from the CRITT TPR-DB, the Task Segment Framework, and the HOF taxonomy, we demonstrate the temporal breakdown of the typing flow on distinct timelines within these three layers.


Inferring Motor Programs from Images of Handwritten Digits

Neural Information Processing Systems

We describe a generative model for handwritten digits that uses two pairs of opposing springs whose stiffnesses are controlled by a motor program. We show how neural networks can be trained to infer the motor programs required to accurately reconstruct the MNIST digits. The inferred motor programs can be used directly for digit classification, but they can also be used in other ways. By adding noise to the motor program inferred from an MNIST image we can generate a large set of very different images of the same class, thus enlarging the training set available to other methods. We can also use the motor programs as additional, highly informative outputs which reduce overfitting when training a feed-forward classifier.


The Importance of Being Correlated: Implications of Dependence in Joint Spectral Inference across Multiple Networks

Pantazis, Konstantinos, Athreya, Avanti, Frost, William N., Hill, Evan S., Lyzinski, Vince

arXiv.org Machine Learning

Networks and graphs, which consist of objects of interest and a vast array of possible relationships between them, arise very naturally in fields as diverse as political science (party affiliations among voters); bioinformatics (gene interactions); physics (dimer systems); and sociology (social network analysis), to name but a few. As such, they are a useful data structure for modeling complex interactions between different experimental entities. Network data, however, is qualitatively distinct from more traditional Euclidean data, and statistical inference on networks is a comparatively new discipline, one that has seen explosive growth over the last two decades. While there is a significant literature devoted to the rigorous statistical study of single networks, multiple network inference-- the analogue of the classical problem of multiple-sample Euclidean inference--is still relatively nascent. Much recent progress in network inference has relied on extracting Euclidean representations of networks, and popular methods include spectral embeddings of network adjacency [3] or Laplacian [45] matrices, representation learning [20, 44], or Bayesian hierarchical methods [16].


Hebbian theory - Wikipedia

#artificialintelligence

Hebbian theory is a neuroscientific theory claiming that an increase in synaptic efficacy arises from a presynaptic cell's repeated and persistent stimulation of a postsynaptic cell. It is an attempt to explain synaptic plasticity, the adaptation of brain neurons during the learning process. It was introduced by Donald Hebb in his 1949 book The Organization of Behavior.[1] The theory is also called Hebb's rule, Hebb's postulate, and cell assembly theory. Let us assume that the persistence or repetition of a reverberatory activity (or "trace") tends to induce lasting cellular changes that add to its stability.


Owen Holland

AITopics Original Links

What makes CRONOS different from other robots is that the positions and lines of pull of the muscles are also similar to those of the corresponding real muscles, and the tendons are positioned in biomimetically consistent ways. For this initial investigation, not all muscles were represented some were replaced by tendons alone, appropriately tensioned. Even before powering CRONOS up, it is clear that there is a fundamental difference between this and the conventional approach. You take his hand and shake it: it moves easily, and so does his whole skeleton. This multi-degree-of-freedom structure, supported by the tensions between dozens of elastic elements, responds as a whole, transmitting force and movement well beyond the point of contact.


Inferring Motor Programs from Images of Handwritten Digits

Nair, Vinod, Hinton, Geoffrey E.

Neural Information Processing Systems

We describe a generative model for handwritten digits that uses two pairs of opposing springs whose stiffnesses are controlled by a motor program. We show how neural networks can be trained to infer the motor programs required to accurately reconstruct the MNIST digits. The inferred motor programs can be used directly for digit classification, but they can also be used in other ways. By adding noise to the motor program inferred from an MNIST image we can generate a large set of very different images of the same class, thus enlarging the training set available to other methods. We can also use the motor programs as additional, highly informative outputs which reduce overfitting when training a feed-forward classifier.


Inferring Motor Programs from Images of Handwritten Digits

Nair, Vinod, Hinton, Geoffrey E.

Neural Information Processing Systems

We describe a generative model for handwritten digits that uses two pairs of opposing springs whose stiffnesses are controlled by a motor program. We show how neural networks can be trained to infer the motor programs required to accurately reconstruct the MNIST digits. The inferred motor programs can be used directly for digit classification, but they can also be used in other ways. By adding noise to the motor program inferred from an MNIST image we can generate a large set of very different images of the same class, thus enlarging the training set available to other methods. We can also use the motor programs as additional, highly informative outputs which reduce overfitting when training a feed-forward classifier.


Inferring Motor Programs from Images of Handwritten Digits

Nair, Vinod, Hinton, Geoffrey E.

Neural Information Processing Systems

We describe a generative model for handwritten digits that uses two pairs of opposing springs whose stiffnesses are controlled by a motor program. We show how neural networks can be trained to infer the motor programs required to accurately reconstruct the MNIST digits. The inferred motor programs can be used directly for digit classification, but they can also be used in other ways. By adding noise to the motor program inferred from an MNIST image we can generate a large set of very different images of the same class, thus enlarging the training set available to other methods. We can also use the motor programs as additional, highly informative outputs which reduce overfitting when training a feed-forward classifier.


A Cortico-Cerebellar Model that Learns to Generate Distributed Motor Commands to Control a Kinematic Arm

Berthier, N. E., Singh, S. P., Barto, A. G., Houk, J. C.

Neural Information Processing Systems

A neurophysiologically-based model is presented that controls a simulated kinematic arm during goal-directed reaches. The network generates a quasi-feedforward motor command that is learned using training signals generated by corrective movements. For each target, the network selects and sets the output of a subset of pattern generators. During the movement, feedback from proprioceptors turns off the pattern generators. The task facing individual pattern generators is to recognize when the arm reaches the target and to turn off. A distributed representation of the motor command that resembles population vectors seen in vivo was produced naturally by these simulations.


A Cortico-Cerebellar Model that Learns to Generate Distributed Motor Commands to Control a Kinematic Arm

Berthier, N. E., Singh, S. P., Barto, A. G., Houk, J. C.

Neural Information Processing Systems

A neurophysiologically-based model is presented that controls a simulated kinematic arm during goal-directed reaches. The network generates a quasi-feedforward motor command that is learned using training signals generated by corrective movements. For each target, the network selects and sets the output of a subset of pattern generators. During the movement, feedback from proprioceptors turns off the pattern generators. The task facing individual pattern generators is to recognize when the arm reaches the target and to turn off. A distributed representation of the motor command that resembles population vectors seen in vivo was produced naturally by these simulations.