scholarly journals Design and analysis of a general vector space model for data classification in Internet of Things

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Jinguo Sang ◽  
Shanchen Pang ◽  
Yang Zha ◽  
Fan Yang
Keyword(s):  
Internet Of Things ◽  
Vector Space ◽  
Text Classification ◽  
Vector Space Model ◽  
Classification Algorithm ◽  
Space Model ◽  
Amount Of Information ◽  
Access Information ◽  
Weighting Methods ◽  
General Vector

AbstractThe amount of information increases explosively in Internet of Things, because more and more data are sensed by large amount of sensors. The explosive growth of information makes it difficult to access information efficiently, so it is an effective method to decrease the amount of information to be transferred on network by text classification. This paper proposes a new text classification algorithm based on vector space model. This algorithm improves the feature selection and weighting methods by introducing synonym replacement to traditional text classification algorithms. The experimental results show that the proposed classification algorithm has considerably improved the precision and recall of classification.

scholarly journals Analysis of Text Classification with various Term Weighting Schemes in Vector Space Model

2020 ◽  
Vol 9 (10) ◽  
pp. 390-393
Keyword(s):  
Vector Space ◽  
Text Classification ◽  
Naive Bayes ◽  
Information Gain ◽  
Vector Space Model ◽  
Naïve Bayes ◽  
Weighting Scheme ◽  
Term Weighting ◽  
Space Model ◽  
Weighting Methods

Term Weighting Scheme (TWS) is a key component of the matching mechanism when using the vector space model In the context of information retrieval (IR) from text documents, the this paper described a new approach of term weighting methods to improve the classification performance. In this study, we propose an effective term weighting scheme, which gives highest accuracy with compare to the text classification methods. We compared performance parameter of KNN and Naïve Bayes Classification with different Weighting Method, Weight information gain, SVM and proposed method.We have implemented many term-weighting methods (TWM) on Amazon data collections in combination with Information-Gain and SVM and KNN algorithm and Naïve Bayes Algorithm.

scholarly journals Improving Term Weighting Schemes for Short Text Classification in Vector Space Model

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 166578-166592
Author(s):  
Surender Singh Samant ◽  
N. L. Bhanu Murthy ◽  
Aruna Malapati
Keyword(s):  
Vector Space ◽  
Text Classification ◽  
Vector Space Model ◽  
Term Weighting ◽  
Weighting Schemes ◽  
Short Text ◽  
Space Model

A Kind of Text Classification Method Based on Fuzzy Vector Space Model and Neural Networks

2013 ◽  
Vol 347-350 ◽  
pp. 2856-2859
Author(s):  
Jun Hui Pan ◽  
Hui Li
Keyword(s):  
Neural Networks ◽  
Vector Space ◽  
Text Classification ◽  
Vector Space Model ◽  
Classification Method ◽  
Space Model ◽  
Output Layer ◽  
Input Layer ◽  
Hidden Layer ◽  
Fuzzy Vector

A kind of text classification method based on fuzzy vector space model and neural networks is proposed in the paper according to the problems that a text can be belongs to many types during the text classification. Fuzzy theory is adopted in the method to look the occurring position of feature items in text on as the important degree (membership) reflecting text subject, and fully considered the position information while the features are extracted, thus the fuzzy feature vectors are constructed, as a result, the text classification is close to the manual classification method. The established networks are constituted of input layer, hidden layer and output layer, the input layer completes the inputs of classification samples, hidden layer extracts the implicit pattern features of input samples, the output layer is used to output the classification results. Finally the effectiveness of this method is proved by some documents of Wan Fang data in experimental section. (Abstract)

Voronoi Diagram Based Retrieval Method for the Internet of Things

2012 ◽  
Vol 472-475 ◽  
pp. 3420-3424
Author(s):  
Wen Bin Zhao ◽  
Zheng Xu Zhao
Keyword(s):  
Internet Of Things ◽  
Vector Space ◽  
Voronoi Diagram ◽  
Vector Space Model ◽  
The Internet ◽  
Retrieval Method ◽  
Space Model ◽  
Feature Vectors ◽  
Search Service ◽  
The Internet Of Things

In the Internet of Things, search service is that information which is corresponding to entities in real world is retrieve so as to help people achieve information that they need. From the angle of visualization, this paper study the search service in the Internet of Things. With the Vector-Space Model, entities' information is expressed as entity vectors, and a Voronoi diagram based Vector-Space Model visualization method is presented. According to similarity between entity vectors, entity vectors' position in two-dimensional plane is calculated and this plane is divided into Voronoi diagram by nodes as which feature vectors of entity vectors’ clustering are taken. According to similarity between query vector and feature vector, a Voronoi diagram based Vector-Space Model retrieval method is put forward. This method restricts the searching scope in Voronoi domain of feature vectors that are the most similar to query vector, thereby the number of compared entity vectors is reduced in the retrieval process. The experiment result indicates that this method can ensure retrieval precision and improve retrieval efficiency.

A Kind of Self-Constructed Category Dictionary in Chinese Text Classification

2014 ◽  
Vol 644-650 ◽  
pp. 2206-2210
Author(s):  
Kun Zhou ◽  
Ya Ping Dai ◽  
Feng Gao ◽  
Ji Hong Zou
Keyword(s):  
Vector Space ◽  
Chinese Text ◽  
Text Classification ◽  
Feature Vector ◽  
Vector Space Model ◽  
Recall Rate ◽  
Support Vector ◽  
Space Model ◽  
Chinese Text Classification ◽  
Feature Vector Space

By means of word-segmentation technology in TRIP database and each word that appears in a database will be account in detail, a kind of self-constructed category dictionary (SCC-dictionary) in Chinese text classification is proposed. For solving high dimension and sparseness problem exit in vector space model, a four-dimensional feature vector space model (FFVSM) is presented in this paper. With Support Vector Machine (SVM) algorithm, the text classifier is designed. Experimental results show there are two achievements in this paper: first, SCC-dictionary can replace the artificial-written dictionary with the same effect; second, the FFVSM will not only reduce the computing load than high-dimensional feature vector space model, but also keep the precision of classification as 86.87%, recall rate as 95.12%, and F1 value as 90.81%.

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