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Now showing items 81-90 of 96
Reinforcement Learning by Policy Search
(2003-02-14)
One objective of artificial intelligence is to model the behavior of an intelligent agent interacting with its environment. The environment's transformations can be modeled as a Markov chain, whose state is partially ...
Perceptual Evaluation of Video-Realistic Speech
(2003-02-28)
abstract With many visual speech animation techniques now available, there is a clear need for systematic perceptual evaluation schemes. We describe here our scheme and its application to a new video-realistic ...
Relative Contributions of Internal and External Features to Face Recognition
(2003-03-01)
The central challenge in face recognition lies in understanding the role different facial features play in our judgments of identity. Notable in this regard are the relative contributions of the internal (eyes, nose and ...
Dissociated Dipoles: Image representation via non-local comparisons
(2003-08-13)
A fundamental question in visual neuroscience is how to represent image structure. The most common representational schemes rely on differential operators that compare adjacent image regions. While well-suited to encoding ...
Investigating shape representation in area V4 with HMAX: Orientation and Grating selectivities
(2003-09-08)
The question of how shape is represented is of central interest to understanding visual processing in cortex. While tuning properties of the cells in early part of the ventral visual stream, thought to be responsible for ...
Electronic Cash with Blind Deposits: How to Have No Spare Change
(2003-10-14)
Electronic cash schemes in which the bank authenticates many coins at once suffer from the problem that coins that are authenticated together can be linked to one another. Unfortunately, unless a user spends coins in a ...
A Correctness Proof for a Byzantine-Fault-Tolerant Read/Write Atomic Memory with Dynamic Replica Membership
(2003-09-25)
We prove correctness of a Byzantine-fault-tolerant replication algorithm for a read/writeatomic memory that supports a dynamic replica set.
Generating Trees of (Reducible) 1324-avoiding Permutations
(2003-10-09)
We consider permutations that avoid the pattern 1324. We give exact formulas for thenumber of reducible 1324-avoiding permutations and the number of {1324, 4132, 2413, 3241}-avoiding permutations. By studying the generating ...
CFRP prestressed concrete lighting columns
(American Concrete InstituteField Applications of FRP Reinforcement: Case Studies, 2003)
Efficient alternatives to the Ephraim and Malah suppression rule for audio signal enhancement
(EURASIP Journal on Applied Signal Processing, 2003)
Audio signal enhancement often involves the application of a time-varying filter, or suppression rule, to the frequency-domain transform of a corrupted signal. Here we address suppression rules derived under a Gaussian ...