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Beyond brain blobs: Machine learning...

Pereira, Francisco.

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Beyond brain blobs: Machine learning classifiers as instruments for analyzing functional magnetic resonance imaging data.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Beyond brain blobs: Machine learning classifiers as instruments for analyzing functional magnetic resonance imaging data./
作者:	Pereira, Francisco.
面頁冊數:	196 p.
附註:	Adviser: Tom Mitchell.
Contained By:	Dissertation Abstracts International68-12B.
標題:	Artificial Intelligence. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3292611
ISBN:	9780549360223

Beyond brain blobs: Machine learning classifiers as instruments for analyzing functional magnetic resonance imaging data.
Pereira, Francisco.

Beyond brain blobs: Machine learning classifiers as instruments for analyzing functional magnetic resonance imaging data. - 196 p.

Adviser: Tom Mitchell.

Thesis (Ph.D.)--Carnegie Mellon University, 2007.

The thesis put forth in this dissertation is that machine learning classifiers can be used as instruments for decoding variables of interest from functional magnetic resonance imaging (fMRI) data. There are two main goals in decoding: (1) Showing that the variable of interest can be predicted from the data in a statistically reliable manner (i.e. there's enough information present). (2) Shedding light on how the data encode the information needed to predict, taking into account what the classifier used can learn and any criteria by which the data are filtered (e.g. how voxels and time points used are chosen).

ISBN: 9780549360223Subjects--Topical Terms:

769149
Artificial Intelligence.

Beyond brain blobs: Machine learning classifiers as instruments for analyzing functional magnetic resonance imaging data.
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245 1 0 $a Beyond brain blobs: Machine learning classifiers as instruments for analyzing functional magnetic resonance imaging data.
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500 $a Adviser: Tom Mitchell.
500 $a Source: Dissertation Abstracts International, Volume: 68-12, Section: B, page: 8145.
502 $a Thesis (Ph.D.)--Carnegie Mellon University, 2007.
520 $a The thesis put forth in this dissertation is that machine learning classifiers can be used as instruments for decoding variables of interest from functional magnetic resonance imaging (fMRI) data. There are two main goals in decoding: (1) Showing that the variable of interest can be predicted from the data in a statistically reliable manner (i.e. there's enough information present). (2) Shedding light on how the data encode the information needed to predict, taking into account what the classifier used can learn and any criteria by which the data are filtered (e.g. how voxels and time points used are chosen).
520 $a Chapter 2 considers the issues that arise when using traditional linear classifiers and several different voxel selection techniques to strive towards these goals. It examines questions such as whether there is redundant, as well as different kinds of, information in fMRI data and how those facts complicate the task of determining whether voxel subsets encode the desired information or whether certain choices of selection method or classifier are universally preferable. All the results presented were obtained through a comparative study of five fMRI datasets.
520 $a Chapter 3 and Chapter 4 introduce the Support Vector Decomposition Machine, a new algorithm that attempts to sidestep the use of voxel selection by learning a low dimensional representation of the data that is also suitable for decoding variables of interest and has the potential to allow incorporation of domain information directly, rather than through the proxy of voxel selection criteria.
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