Satya Keerthi Gorripati

Work place: Department of CSIT, Gayatri Vidya Parishad College of Engineering, Visakhapatnam, Andhra.Pradesh, India



Research Interests: Computational Learning Theory, Computer Architecture and Organization, Network Architecture, Data Structures and Algorithms, Analysis of Algorithms


Dr. Satya Keerthi received M.Tech in Computer Science and Technology from GITAM University and Ph.D in Computer Science and Engineering from Andhra University, India. His Research Interests include Data Analytics, Social Network Analysis and Recommender Systems.

Author Articles
A Community Based Reliable Trusted Framework for Collaborative Filtering

By Satya Keerthi Gorripati M.Kamala Kumari Anupama Angadi

DOI:, Pub. Date: 8 Feb. 2019

Recommender Systems are a primary component of online service providers, formulating plenty of information produced by users’ histories (e.g., their procurements, ratings of products, activities, browsing patterns). Recommendation algorithms use this historical information and their contextual data to offer a list of likely items for each user. Traditional recommender algorithms are built on the similarity between items or users.(e.g., a user may purchase the identical items as his nearest user). In the process of reducing limitations of traditional approaches and to improve the quality of recommender systems, a reliability based community method is introduced.This method comprises of three steps: The first step identifies the trusted relations of the current user by allowing trust propagation in the trust network. In next step, the ratings of selected trusted neighborhood are used for predicting the unrated item of current user. The prediction relies only on items that belong to candidate items’ community. Finally the reliability metric is computed to assess the worth of prediction rating. Experimental results confirmed that the proposed framework attained higher accuracy matched to state-of-the-art recommender system approaches.

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Temporal Community-Based Collaborative Filtering to Relieve from Cold-Start and Sparsity Problems

By Anupama Angadi Satya Keerthi Gorripati P. Suresh Varma

DOI:, Pub. Date: 8 Oct. 2018

Recommender systems inherently dynamic in nature and exponentially grow with time, in terms of interests and behaviour patterns. Traditional recommender systems rely on similarity of users or items in static networks where the user/item neighbourhood is almost same and they generate the same recommendations since the network is constant. This paper proposes a novel architecture, called Temporal Community-based Collaborative filtering, which is an association of recommendation and the dynamic community algorithm in order to exploit the temporal changes in the community structure to enhance the existing system. Our framework also provides solutions to common inherent issues of collaborative filtering approach such as cold-start, sparsity and compared against static and traditional collaborative systems. The outcomes indicate that the proposed system yields higher values in quality standards and minimizes the drawbacks of the traditional recommender system.

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