Beyond bag-of-words: Bigram-enhanced context-dependent term weights

2014 ◽  
Vol 65 (6) ◽  
pp. 1134-1148 ◽  
Author(s):  
Edward K. F. Dang ◽  
Robert W. P. Luk ◽  
James Allan
Keyword(s):  
Bag Of Words ◽  
Dependent Term ◽  
Context Dependent ◽  
Term Weights

Context Dependent Bag of words generation

2013 ◽  
Author(s):  
Swapnil Ashok Jadhav ◽  
D. V. L. N. Somayajulu ◽  
S. Nagesh Bhattu ◽  
R. B. V. Subramanyam ◽  
P. Suresh
Keyword(s):  
Bag Of Words ◽  
Context Dependent

Context-Dependent Feature Values in Text Categorization

2020 ◽  
Vol 30 (09) ◽  
pp. 1199-1219
Author(s):  
Edward Kai Fung Dang ◽  
Robert Wing Pong Luk ◽  
James Allan
Keyword(s):  
Text Categorization ◽  
Knowledge Engineering ◽  
Word Embedding ◽  
Support Vector ◽  
Adjustment Procedure ◽  
Software Applications ◽  
Context Dependent ◽  
Feature Values ◽  
Term Weights ◽  
General Method

Feature engineering is one aspect of knowledge engineering. Besides feature selection, the appropriate assignment of feature values is also crucial to the performance of many software applications, such as text categorization (TC) and speech recognition. In this work, we develop a general method to enhance TC performance by the use of context-dependent feature values (aka term weights), which are obtained by a novel adaptation of a context-dependent adjustment procedure previously shown to be effective in information retrieval. The motivation of our approach is that the general method can be used with different text representations and in combination of other TC techniques. Experiments on several test collections show that our context-dependent feature values can improve TC over traditional context-independent unigram feature values, using a strong classifier like Support Vector Machine (SVM), which past works have found to be hard to improve. We also show that the relative performance improvement of our method over the context-independent baseline is comparable to the levels attained by recent word embedding methods in the literature, while an advantage of our approach is that it does not require the substantial training needed to learn word embedding representations.

A new context-dependent term weight computed by boost and discount using relevance information

2010 ◽  
Vol 61 (12) ◽  
pp. 2514-2530 ◽  
Author(s):  
E.K.F. Dang ◽  
R.W.P. Luk ◽  
J. Allan ◽  
K.S. Ho ◽  
S.C.F. Chan ◽  
...  
Keyword(s):  
Dependent Term ◽  
Context Dependent

Forming Impressions of Personality

2014 ◽  
Vol 45 (3) ◽  
pp. 153-163 ◽  
Author(s):  
Sanne Nauts ◽  
Oliver Langner ◽  
Inge Huijsmans ◽  
Roos Vonk ◽  
Daniël H. J. Wigboldus
Keyword(s):  
Impression Formation ◽  
Context Dependent

Asch’s seminal research on “Forming Impressions of Personality” (1946) has widely been cited as providing evidence for a primacy-of-warmth effect, suggesting that warmth-related judgments have a stronger influence on impressions of personality than competence-related judgments (e.g., Fiske, Cuddy, & Glick, 2007 ; Wojciszke, 2005 ). Because this effect does not fit with Asch’s Gestalt-view on impression formation and does not readily follow from the data presented in his original paper, the goal of the present study was to critically examine and replicate the studies of Asch’s paper that are most relevant to the primacy-of-warmth effect. We found no evidence for a primacy-of-warmth effect. Instead, the role of warmth was highly context-dependent, and competence was at least as important in shaping impressions as warmth.

Memorial Consequences of Environmental Context Change in Children and Adults

2010 ◽  
Vol 57 (6) ◽  
pp. 455-461 ◽  
Author(s):  
Alp Aslan ◽  
Anuscheh Samenieh ◽  
Tobias Staudigl ◽  
Karl-Heinz T. Bäuml
Keyword(s):  
Elementary School ◽  
Young Adults ◽  
Episodic Memory ◽  
Middle Childhood ◽  
First Graders ◽  
Fourth Graders ◽  
Environmental Context ◽  
Context Change ◽  
Context Dependent

Changing environmental context during encoding can influence episodic memory. This study examined the memorial consequences of environmental context change in children. Kindergartners, first and fourth graders, and young adults studied two lists of items, either in the same room (no context change) or in two different rooms (context change), and subsequently were tested on the two lists in the room in which the second list was encoded. As expected, in adults, the context change impaired recall of the first list and improved recall of the second. Whereas fourth graders showed the same pattern of results as adults, in both kindergartners and first graders no memorial effects of the context change arose. The results indicate that the two effects of environmental context change develop contemporaneously over middle childhood and reach maturity at the end of the elementary school days. The findings are discussed in light of both retrieval-based and encoding-based accounts of context-dependent memory.

Contextual Forgetting and Context Dependent Memory

2002 ◽  
Author(s):  
Jennifer Herbert ◽  
Sharon Bertsch
Keyword(s):  
Context Dependent

Increased context-dependent sensitization to amphetamine in TAAR1-KO mice

2012 ◽  
Author(s):  
I. Sukhanov ◽  
T. D. Sotnikova ◽  
L. Cervo ◽  
R. R. Gainetdinov
Keyword(s):  
Context Dependent
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