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Efficiently and effectively learning models of similarity from human feeback.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Efficiently and effectively learning models of similarity from human feeback./
Author:	Eric Heim.
Description:	1 online resource (155 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.
Subject:	Artificial intelligence. -
Online resource:	click for full text (PQDT)
ISBN:	9781339580067

Efficiently and effectively learning models of similarity from human feeback.
Eric Heim.

Efficiently and effectively learning models of similarity from human feeback. - 1 online resource (155 pages)

Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.

Thesis (Ph.D.)--University of Pittsburgh, 2015.

Includes bibliographical references

Vital to the success of many machine learning tasks is the ability to reason about how objects relate. For this, machine learning methods utilize a model of similarity that describes how objects are to be compared. While traditional methods commonly compare objects as feature vectors by standard measures such as the Euclidean distance or cosine similarity, other models of similarity can be used that include auxiliary information outside of that which is conveyed through features. To build such models, information must be given about object relationships that is beneficial to the task being considered. In many tasks, such as object recognition, ranking, product recommendation, and data visualization, a model based on human perception can lead to high performance. Other tasks require models that reflect certain domain expertise. In both cases, humans are able to provide information that can be used to build useful models of similarity. It is this reason that motivates similarity-learning methods that use human feedback to guide the construction of models of similarity.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781339580067Subjects--Topical Terms:

559380
Artificial intelligence.
Index Terms--Genre/Form:

554714
Electronic books.

Efficiently and effectively learning models of similarity from human feeback.
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245 1 0 $a Efficiently and effectively learning models of similarity from human feeback.
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300 $a 1 online resource (155 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.
500 $a Adviser: Rebecca Hwa.
502 $a Thesis (Ph.D.)--University of Pittsburgh, 2015.
504 $a Includes bibliographical references
520 $a Vital to the success of many machine learning tasks is the ability to reason about how objects relate. For this, machine learning methods utilize a model of similarity that describes how objects are to be compared. While traditional methods commonly compare objects as feature vectors by standard measures such as the Euclidean distance or cosine similarity, other models of similarity can be used that include auxiliary information outside of that which is conveyed through features. To build such models, information must be given about object relationships that is beneficial to the task being considered. In many tasks, such as object recognition, ranking, product recommendation, and data visualization, a model based on human perception can lead to high performance. Other tasks require models that reflect certain domain expertise. In both cases, humans are able to provide information that can be used to build useful models of similarity. It is this reason that motivates similarity-learning methods that use human feedback to guide the construction of models of similarity.
520 $a Associated with the task of learning similarity from human feedback are many practical challenges that must be considered. In this dissertation we explicitly define these challenges as being those of efficiency and effectiveness. Efficiency deals with both making the most of obtained feedback, as well as, reducing the computational run time of the learning algorithms themselves. Effectiveness concerns itself with producing models that accurately reflect the given feedback, but also with ensuring the queries posed to humans are those they can answer easily and without errors. After defining these challenges, we create novel learning methods that explicitly focus on one or more of these challenges as a means to improve on the state-of-the-art in similarity-learning.
520 $a Specifically, we develop methods for learning models of perceptual similarity, as well as models that reflect domain expertise. In doing so, we enable similarity-learning methods to be practically applied in more real-world problem settings.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Artificial intelligence. $3 559380
650 4 $a Computer science. $3 573171
655 7 $a Electronic books. $2 local $3 554714
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690 $a 0984
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Pittsburgh. $b Computer Science. $3 1179612
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