An Improved Genetic Based Keyword Extraction Technique

  • J. Dafni RoseEmail author
  • Divya D. Dev
  • C. R. Rene Robin
Part of the Studies in Computational Intelligence book series (SCI, volume 512)


Keyword extraction plays an increasingly crucial role in several texts related researches. Applications that utilize feature word selection include text mining, web page retrieval, text clustering and text categorization. Current methods for computing the keywords of a document are subject to a series of evolutions. Nevertheless, the methods do not perform well in very high dimensional state spaces. The methods are quite inefficient as they depend greatly on a human form of input. This attribute of the existing keyword extraction methods is not ideal in several applications. This paper presents a technique which will extract keywords without any kind of manual support. Genetic based extraction computes the list of key terms for each document. Irrespective of the text size, the novel method is able to perform the required computation with a higher echelon of performance. Calculations are done with the information taken from a structured document. Then the document is converted into a numerical representation by bestowing the distinct words with a numerical weight. The proposed method uses the knowledge of an iterative computation with a genetic algorithm to discover the optimal key terms. The evolutionary technique is subject to gradual changes that ensure the survival of the fittest. Experiments were done using three different data sets. The proposed method shows a high degree of correlation when the performance was checked against the existing methods of weighted term standard deviation, The Differential Text Categorizer method and the discourse method.


Genetic algorithms Weighted Term Standard Deviation Genetic based algorithm mutation crossover 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • J. Dafni Rose
    • 1
    Email author
  • Divya D. Dev
    • 2
  • C. R. Rene Robin
    • 3
  1. 1.St. Joseph’s Institute of TechnologyChennaiIndia
  2. 2.St. Joseph’s College of EngineeringChennaiIndia
  3. 3.Jerusalem College of EngineeringChennaiIndia

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