Class Hierarchical Structure-Based Text Classification

2011 ◽  
Vol 255-260 ◽  
pp. 2233-2237
Author(s):  
Xiao Yun Chen ◽  
Jin Hua Chen
Keyword(s):  
Hierarchical Structure ◽  
Text Classification ◽  
Correct Position ◽  
Class Hierarchy ◽  
Viable Solution ◽  
Training Samples ◽  
The Hierarchical Structure ◽  
The Cost ◽  
Number Of Classes ◽  
Sample Set

There is a problem that the difficulty in text classification will increase when the number of classes increases, to which hierarchical structure is a viable solution. Well, a document’s hierarchical structure is usually maintained only by hand, which require substantial manpower to find the correct position of a document in the class hierarchy or to reconstruct the hierarchy. Constructing the hierarchical structure automatically by clustering the training samples can effectively reduce the cost of manual maintenance, and at the same time, it can avoid the conflict between the prior knowledge and the statistical properties of the sample set caused by artificial maintenance of the hierarchy.

scholarly journals Research on Building Methods of Hierarchical Structure in Text Classification

2012 ◽  
Vol 6-7 ◽  
pp. 742-747
Author(s):  
Yun Bo Xiong
Keyword(s):  
Hierarchical Clustering ◽  
Hierarchical Structure ◽  
Text Classification ◽  
Confusion Matrix ◽  
Hierarchical Classification ◽  
Hierarchical Relationship ◽  
The Hierarchical Structure ◽  
Building Methods

There always exists semantic hierarchical relationship in text classification. Therefore, it's inevitable to organize documents in accordance with the hierarchical structure. Based on confusion matrix, this paper attempted to adopt two different algorithms including hierarchical clustering and confusion category to build hierarchical structure of document category, and finally made use of hierarchical classification to carry on experiment, results of which showed that the confusion category strategy is superior to hierarchical clustering strategy and recall and precision of flat classification are both improved.

Parafia unicka w Rachaniach do 1811 roku/ The Uniate Parish in Rachanie until 1811

2012 ◽  
Vol 67 (2) ◽  
Author(s):  
Janusz Adam Frykowski
Keyword(s):  
Hierarchical Structure ◽  
Geographical Location ◽  
Historical Sources ◽  
Holy Communion ◽  
The Hierarchical Structure ◽  
History Of ◽  
The Church ◽  
Ancillary Equipment

AbstractThe following paper depicts the history of Saint Simeon Stylites Uniate Parish in Rachanie since it became known in historical sources until 1811- that is the time it ceased to be an independent church unit. The introduction of the article contains the geographical location of the parish, its size and the position within the hierarchical structure of the Church. Having analysed post-visit inspection protocols left by Chelm Bishops, the appearance as well as fittings and ancillary equipment of the church in Rachanie in that particular period are reported. Moreover, the list of 4 local clergymen is recreated and their benefice is determined. As far as possible, both the number of worshipers and the number of Holy Communion receivers is determined.

On the cost-effectiveness of neural and non-neural approaches and representations for text classification: A comprehensive comparative study

2021 ◽  
Vol 58 (3) ◽  
pp. 102481
Author(s):  
Washington Cunha ◽  
Vítor Mangaravite ◽  
Christian Gomes ◽  
Sérgio Canuto ◽  
Elaine Resende ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Comparative Study ◽  
Text Classification ◽  
The Cost

Default Logic Models of Certain Inheritance Systems with Exceptions

1993 ◽  
Vol 18 (2-4) ◽  
pp. 129-149
Author(s):  
Serge Garlatti
Keyword(s):  
Hierarchical Structure ◽  
Formal Semantics ◽  
Sufficient Conditions ◽  
Nonmonotonic Reasoning ◽  
Default Logic ◽  
Representation Systems ◽  
The Hierarchical Structure ◽  
Necessary And Sufficient ◽  
Structure Of Knowledge ◽  
Made In

Representation systems based on inheritance networks are founded on the hierarchical structure of knowledge. Such representation is composed of a set of objects and a set of is-a links between nodes. Objects are generally defined by means of a set of properties. An inheritance mechanism enables us to share properties across the hierarchy, called an inheritance graph. It is often difficult, even impossible to define classes by means of a set of necessary and sufficient conditions. For this reason, exceptions must be allowed and they induce nonmonotonic reasoning. Many researchers have used default logic to give them formal semantics and to define sound inferences. In this paper, we propose a survey of the different models of nonmonotonic inheritance systems by means of default logic. A comparison between default theories and inheritance mechanisms is made. In conclusion, the ability of default logic to take some inheritance mechanisms into account is discussed.

scholarly journals Stepwise collapse of a giant pore metal–organic framework

2021 ◽  
Vol 50 (14) ◽  
pp. 5011-5022 ◽  
Author(s):  
Adam F. Sapnik ◽  
Duncan N. Johnstone ◽  
Sean M. Collins ◽  
Giorgio Divitini ◽  
Alice M. Bumstead ◽  
...  
Keyword(s):  
Distribution Function ◽  
Hierarchical Structure ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Metal Organic Framework ◽  
Defect Engineering ◽  
Structural Collapse ◽  
The Hierarchical Structure ◽  
Metal Organic ◽  
Organic Framework

Defect engineering is used to augment the porosity of MIL-100. Incorporation of defects leads to structural collapse and ultimately causes amorphisation. Pair distribution function analysis reveals a stepwise collapse of the hierarchical structure.

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