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In recent years advent of social networking services has created large amounts of data. Microblogging website is a kind of social network in which users share short messages with others. One of the most popular microblogging services is Twitter. Every day millions of people post their opinions and sentiments in this microblog. Due to the large numbers of tweets, finding new approaches to discover...
In recent years, multi-label classification problem has become a controversial issue. In this kind of classification, each sample is associated with a set of class labels. Ensemble approaches are supervised learning algorithms in which an operator takes a number of learning algorithms, namely base-level algorithms and combines their outcomes to make an estimation. The simplest form of ensemble learning...
Social media including Twitter create a space for expression and dissemination of thoughts and opinions on various topics and various events and they have created opportunity to apply theories and technology leading to search and explore the trends. Mining stream data needs to be balanced in three different branches: accuracy, time and memory. The optimal accuracy rate has obtained in the stream data...
Social media such as Twitter create space to explain the thoughts and opinions on various topics and different events, millions of users can share their ideas in this Micrblog, Therefore Twitter is converted as a source to exploration of information; make a decision and an analysis of sentiment. There is a sense in all of the texts, but it is more important to provide strategies for obtaining suitable...
Social network sites are becoming great through millions of users and information have been gathered from the users. This information have equal advantages to their friends and spammers. Twitter is one of the most popular social networks that, users can send short textual messages namely tweet. Researches have shown that this network is subject to spammer's invasion more than other social networks...
Gene selection is one of important research issues in analysis of gene expression data classification. Current methods try to reduce genes by means of statistical calculations and have used semantic similarity under gene ontology. In this article a technique has been presented based on which in addition to considering biological relation among genes, redundant genes by means of hierarchical clustering...
Nowadays many internet users prefer to navigate their interest web pages in special web site rather than navigating all web pages in the web site. For this reason some techniques have been developed for predicting user’s future requests. Data manning algorithms can be applied to many prediction problems. We can exploit Web Usage Mining for Knowledge extracting based on user behavior during the web...
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