Social media hold valuable, vast and unstructured information on public opinion that can be
utilized to improve products and services. The automatic analysis of such data, however …

The Persian language is one of the dominant languages in the Middle East, so there are
significant amount of Persian documents available on the Web. Due to the different nature of …

Problem of the Study: Environmental health affects the quality of life. Therefore, there is a
close relationship between the environment and health, and it is important to perceive …

Pseudo-relevance feedback is the basis of a category of automatic query modification
techniques. Pseudo-relevance feedback methods assume the initial retrieved set of …

There are three factors involved in text classification. These are classification model,
similarity measure and document representation model. In this paper, we will focus on …

Increasing size of web leads to relevant information extraction by traditional and last query
expansion methods not to be efficient and encounter an essential challenge. Therefore, to …

Automatic document classification due to its various applications in data mining and
information technology is one of the important topics in computer science. Classification …

In this study, coal, which is one of the energy raw materials, and coal-related keywords and
the relationship between industrialization and political/social events from past to present …

With the pervasive growth of web-based businesses, sentiment analysis of online reviews
has attracted increasing interest among text mining experts. The problem is complicated …

ABSTRACT Problem of Research: To contribute to the development of new strategies for the
future in health tourism, which concern economic development, by examining the evolution …