Work place: Department of Computer science and Engineering, Rajarambapu Institute of Technology, Islampur 415414, India
E-mail: nagaraj.dharwadkar@ritindia.edu
Website:
Research Interests: Image Compression, Image Manipulation, Network Security, Image Processing, Data Structures and Algorithms
Biography
Nagaraj V. Dharwadkar obtained B.E. in Computer Science and Engineering in 2000 from Karnataka University Dharwad, M.Tech. in Computer Science and Engineering in the year 2006 from VTU, Belgum and Ph.D. in Computer Science and Engineering in 2014 from National Institute of Technology, Warangal. He is Professor and Head of the Computer Science and Engineering department at Rajarambapu Institute of Technology, Islampur. He had 15 years of Teaching Experience at Professional Institutes across India and published 40 papers in various International Journals and Conferences. His area of research interest is Multimedia Security, Image Processing, Big Data Analytics and Machine Learning.
By Rudragouda G. Patil Mahantesh N. Birje Manisha Tapale Nagaraj V. Dharwadkar
DOI: https://doi.org/10.5815/ijmecs.2026.04.01, Pub. Date: 8 Aug. 2026
Educational assessment has changed from “one size fits all” model to learner-centered, responsive, and adaptable dynamic rubrics and feedback procedures. Improved instructor-student communication and transparency boost, engagement and assessment confidence with dynamic rubrics. Dynamic rubrics could improve feedback and assessment. Pre-processed standard dataset texts are used. Pre-processed texts are delivered to Word2Vec to extract key features and vectorize them. A fuzzy clustering model with dynamically weighted rubrics evaluates the assignment. The dynamic rubric clearly outlines the assignment's evaluation criteria, and weights assist decide how much each criterion contributes to the overall grade using Foraging Phase Updated Addax Optimization. Subsequently, the assessment score is obtained, and based on this score, feedback generation is performed on the developed model using Generative Attention Long Short Term Memory. Finally, the developed model provides the optimal responses to the students by using the dynamic rubric with a deep learning model and an enhanced optimization algorithm. The experiment scores on two datasets observed over existing models shows average accuracy of 99.36% with 2.7% improvement over K-Means Clustering. Average MAE of 31.85%, reduced by 81% over K-Means. Average Efficiency increase by 21.30% over other models. Thus, the developed model is more effective and robust than the existing approaches.
[...] Read more.By Ajinkya N. Jadhav Nagaraj V. Dharwadkar
DOI: https://doi.org/10.5815/ijmecs.2018.11.03, Pub. Date: 8 Nov. 2018
The automated speaker endorsement technique used for recognition of a person by his voice data. The speaker identification is one of the biometric recognition and they were also used in government services, banking services, building security and intelligence services like this applications. The exactness of this system is based on the pre-processing techniques used to select features produced by the voice and to identify the speaker, the speech modeling methods, as well as classifiers, are used. Here, the edges and continuous quality point are eliminated in the normalization process. The Mel-Scale Frequency Cepstral Coefficient is one of the methods to grab features from a wave file of spoken sentences. The Gaussian Mixture Model technique is used and done experiments on MARF (Modular Audio Recognition Framework) framework to increase outcome estimation. We have presented an end pointing elimination in Gaussian selection medium for MFCC.
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