Efficiency of Human Activity on Information Spreading on Twitter

Understanding the collective reaction to individual actions is key to effectively spread information in social media. In this work we define efficiency on Twitter, as the ratio between the emergent spreading process and the activity employed by the user. We characterize this property by means of a quantitative analysis of the structural and dynamical patterns emergent from human interactions, and show it to be universal across several Twitter conversations. We found that some influential users efficiently cause remarkable collective reactions by each message sent, while the majority of users must employ extremely larger efforts to reach similar effects. Next we propose a model that reproduces the retweet cascades occurring on Twitter to explain the emergent distribution of the user efficiency. The model shows that the dynamical patterns of the conversations are strongly conditioned by the topology of the underlying network. We conclude that the appearance of a small fraction of extremely efficient users results from the heterogeneity of the followers network and independently of the individual user behavior.Comment: 29 pages, 10 figure

Efficiency of Human Activity on Information Spreading on Twitter

Understanding the collective reaction to individual actions is key to effectively spread information in social media. In this work we define efficiency on Twitter, as the ratio between the emergent spreading process and the activity employed by the user. We characterize this property by means of a quantitative analysis of the structural and dynamical patterns emergent from human interactions, and show it to be universal across several Twitter conversations. We found that some influential users efficiently cause remarkable collective reactions by each message sent, while the majority of users must employ extremely larger efforts to reach similar effects. Next we propose a model that reproduces the retweet cascades occurring on Twitter to explain the emergent distribution of the user efficiency. The model shows that the dynamical patterns of the conversations are strongly conditioned by the topology of the underlying network. We conclude that the appearance of a small fraction of extremely efficient users results from the heterogeneity of the followers network and independently of the individual user behavior.Comment: 29 pages, 10 figure

Enhanced Spam Detection System for Twitter Social Networking Platform

Twitter social site is one of the most popular Online Social Networking Site (OSN) used by popular people such as Ministers, businessman, large companies, actors to share their information. In this site, around 500 million of tweets are posted monthly by the total 313 million Twitter active users. The widespread of Twitter has drawn the interest of spammers. These malicious actors exploit the platform for various nefarious purposes, including monitoring authentic users, disseminating harmful software, and promoting their agendas through URLs embedded in tweets. They engage in tactics like secret following and unfollowing legitimate users, all with the intent of gathering sensitive information.To resolve this problem, a secure spam detection based on machine learning approach is designed. The designed used stop word removal, word to vector model to refined and dimensionally reduced the data. To enhance the quality of the data Cosine similarity is also been applied to measure the similarity score among the tweets and based upon that Artificial Neural Network (ANN) is trained. Later on, it is used to test the efficiency by examining the performance parameters in terms of precision, recall and F-measure. Also, the comparative analysis has been performed to present the efficiency of the work. The average precision, recall and F measure of proposed spam detection model of 0.9252, 0.6107 and 0.734 are obtained

Information Quality in Social Networks: Predicting Spammy Naming Patterns for Retrieving Twitter Spam Accounts

The popularity of social networks is mainly conditioned by the integrity and the quality of contents generated by users as well as the maintenance of users’ privacy. More precisely, Twitter data (e.g. tweets) are valuable for a tremendous range of applications such as search engines and recommendation systems in which working on a high quality information is a compulsory step. However, the existence of ill-intentioned users in Twitter imposes challenges to maintain an acceptable level of data quality. Spammers are a concrete example of ill-intentioned users. Indeed, they have misused all services provided by Twitter to post spam content which consequently leads to serious problems such as polluting search results. As a natural reaction, various detection methods have been designed which inspect individual tweets or accounts for the existence of spam. In the context of large collections of Twitter users, applying these conventional methods is time consuming requiring months to filter o ut spam accounts in such collections. Moreover, Twitter community cannot apply them either randomly or sequentially on each user registered because of the dynamicity of Twitter network. Consequently, these limitations raise the need to make the detection process more systematic and faster. Complementary to the conventional detection methods, our proposal takes the collective perspective of users (or accounts) to provide a searchable information to retrieve accounts having high potential for being spam ones. We provide a design of an unsupervised automatic method to predict spammy naming patterns, as searchable information, used in naming spam accounts. Our experimental evaluation demonstrates the efficiency of predicting spammy naming patterns to retrieve spam accounts in terms of precision, recall, and normalized discounted cumulative gain at different rank

Smarter grid through collective intelligence: user awareness for enhanced performance

This paper examines the scenario of a university campus, and the impact on energy consumption of the awareness of building managers and users (lecturers, students and administrative staff).Peer ReviewedPostprint (published version