Matches in SemOpenAlex for { <https://semopenalex.org/work/W2742976671> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W2742976671 abstract "This dissertation explores two different topics. In Part I we present data analysis and modeling studies characterizing how simple cell receptive fields in the mammalian primary visual cortex collectively represent visual information. We build on standard models which treat simple cell responses as the outputs of linear spatio-temporal filters. We characterize a widely assumed but previously unquantified linear trend relating simple cell preferred spatial frequencies and spatial frequency bandwidths. In contrast with popular assumptions, we discover that receptive field shapes are not scale invariant on average, but evolve systematically with preferred spatial frequency. We present a new parametric model for simple cell space-time receptive fields, and a new index for directional-tuning strength. Examination of this new index suggests that strongly directionally-selective simple cells are more common than previously believed. Finally, we present theoretical arguments to account for the way in which simple cell populations represent time-varying imagery. These arguments predict a novel constraint between a receptive field's temporal bandwidth and its preferred spatial and temporal frequencies and spatial frequency bandwidth. We find this constraint is obeyed by cat simple cell receptive fields. In Part II we present an information theoretic analysis of pattern recognition. Biological and machine pattern recognition systems face a common challenge: Given sensory data about an unknown object, classify the object by comparing the sensory data with a library of internal representations stored in memory. In real-world environments, the number of possible objects to be recognized and the richness of the raw sensory data often force recognition systems to internally represent memory and sensory information in a compressed format. However, these representations must preserve information in the original data with some minimum level of fidelity to support reliable pattern recognition. Thus, there is an intrinsic tradeoff between the amount of resources devoted to data representation and the complexity of the environment in which a recognition system may reliably operate. We propose a general mathematical model for pattern recognition problems subject to resource constraints, and prove single-letter information theoretic bounds governing the aforementioned tradeoff. We apply our theoretical results to the example of recognizing sequences of binary symbols." @default.
- W2742976671 created "2017-08-17" @default.
- W2742976671 creator A5023557669 @default.
- W2742976671 creator A5079361224 @default.
- W2742976671 date "2006-01-01" @default.
- W2742976671 modified "2023-09-28" @default.
- W2742976671 title "Image representation and pattern recognition in brains and machines" @default.
- W2742976671 hasPublicationYear "2006" @default.
- W2742976671 type Work @default.
- W2742976671 sameAs 2742976671 @default.
- W2742976671 citedByCount "8" @default.
- W2742976671 countsByYear W27429766712012 @default.
- W2742976671 crossrefType "journal-article" @default.
- W2742976671 hasAuthorship W2742976671A5023557669 @default.
- W2742976671 hasAuthorship W2742976671A5079361224 @default.
- W2742976671 hasConcept C105795698 @default.
- W2742976671 hasConcept C117251300 @default.
- W2742976671 hasConcept C153180895 @default.
- W2742976671 hasConcept C154945302 @default.
- W2742976671 hasConcept C169760540 @default.
- W2742976671 hasConcept C17744445 @default.
- W2742976671 hasConcept C19071747 @default.
- W2742976671 hasConcept C199539241 @default.
- W2742976671 hasConcept C2524010 @default.
- W2742976671 hasConcept C2776036281 @default.
- W2742976671 hasConcept C2776359362 @default.
- W2742976671 hasConcept C2778837399 @default.
- W2742976671 hasConcept C2779345533 @default.
- W2742976671 hasConcept C31972630 @default.
- W2742976671 hasConcept C33923547 @default.
- W2742976671 hasConcept C41008148 @default.
- W2742976671 hasConcept C86803240 @default.
- W2742976671 hasConcept C94625758 @default.
- W2742976671 hasConceptScore W2742976671C105795698 @default.
- W2742976671 hasConceptScore W2742976671C117251300 @default.
- W2742976671 hasConceptScore W2742976671C153180895 @default.
- W2742976671 hasConceptScore W2742976671C154945302 @default.
- W2742976671 hasConceptScore W2742976671C169760540 @default.
- W2742976671 hasConceptScore W2742976671C17744445 @default.
- W2742976671 hasConceptScore W2742976671C19071747 @default.
- W2742976671 hasConceptScore W2742976671C199539241 @default.
- W2742976671 hasConceptScore W2742976671C2524010 @default.
- W2742976671 hasConceptScore W2742976671C2776036281 @default.
- W2742976671 hasConceptScore W2742976671C2776359362 @default.
- W2742976671 hasConceptScore W2742976671C2778837399 @default.
- W2742976671 hasConceptScore W2742976671C2779345533 @default.
- W2742976671 hasConceptScore W2742976671C31972630 @default.
- W2742976671 hasConceptScore W2742976671C33923547 @default.
- W2742976671 hasConceptScore W2742976671C41008148 @default.
- W2742976671 hasConceptScore W2742976671C86803240 @default.
- W2742976671 hasConceptScore W2742976671C94625758 @default.
- W2742976671 hasLocation W27429766711 @default.
- W2742976671 hasOpenAccess W2742976671 @default.
- W2742976671 hasPrimaryLocation W27429766711 @default.
- W2742976671 hasRelatedWork W144325277 @default.
- W2742976671 hasRelatedWork W1502217198 @default.
- W2742976671 hasRelatedWork W1526413759 @default.
- W2742976671 hasRelatedWork W1986327281 @default.
- W2742976671 hasRelatedWork W2013126687 @default.
- W2742976671 hasRelatedWork W2022930567 @default.
- W2742976671 hasRelatedWork W2039740802 @default.
- W2742976671 hasRelatedWork W2060734188 @default.
- W2742976671 hasRelatedWork W2061961625 @default.
- W2742976671 hasRelatedWork W2097159427 @default.
- W2742976671 hasRelatedWork W2138015733 @default.
- W2742976671 hasRelatedWork W2157456011 @default.
- W2742976671 hasRelatedWork W2187408418 @default.
- W2742976671 hasRelatedWork W2280781242 @default.
- W2742976671 hasRelatedWork W2333551109 @default.
- W2742976671 hasRelatedWork W2410573601 @default.
- W2742976671 hasRelatedWork W2748112703 @default.
- W2742976671 hasRelatedWork W3216977419 @default.
- W2742976671 hasRelatedWork W76767215 @default.
- W2742976671 hasRelatedWork W77512341 @default.
- W2742976671 isParatext "false" @default.
- W2742976671 isRetracted "false" @default.
- W2742976671 magId "2742976671" @default.
- W2742976671 workType "article" @default.