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    • List of Articles Mohammad Reza Kangavari

      • Open Access Article

        1 - A Method for Multi-text Summarization Based on Multi-Objective Optimization use Imperialist Competitive Algorithm
        Amir Shahab Shahabi Mohammad Reza Kangavari Amir Masoud Rahmani
        In this research, we discuss the methods that have been proposed so far to solve automatic summarization, in which both single-text and multi-text are summarized with emphasis on experimental methods and text extraction techniques. In multi-text summarization, retrievin More
        In this research, we discuss the methods that have been proposed so far to solve automatic summarization, in which both single-text and multi-text are summarized with emphasis on experimental methods and text extraction techniques. In multi-text summarization, retrieving redundant information that is readable and coherent and contains maximum information from the original text and minimum redundancy has made research in this field very important. An extraction approach based on several methods for identifying sentence similarities and a meta-heuristic optimization algorithm that has been modified and optimized for faster convergence is presented. In this algorithm, changes are made based on density detection through the probability distribution function to avoid being placed in local optimization and try to search more extensively for the response space. The experimental results obtained from the implementation of the algorithm show that the efficiency on criteria such as ROUGE and the accuracy of the proposed method is effectively increased. Manuscript profile
      • Open Access Article

        2 - Protein Secondary Structure Prediction: a Literature Review with Focus on Machine Learning Approaches
        Leila Khalatbari Mohammad Reza Kangavari
        DNA sequence, containing all genetic traits is not a functional entity. Instead, it transfers to protein sequences by transcription and translation processes. This protein sequence takes on a 3D structure later, which is a functional unit and can manage biological inter More
        DNA sequence, containing all genetic traits is not a functional entity. Instead, it transfers to protein sequences by transcription and translation processes. This protein sequence takes on a 3D structure later, which is a functional unit and can manage biological interactions using the information encoded in DNA. Every life process one can figure is undertaken by proteins with specific functional responsibilities. Consequently protein function prediction is a momentous task in bioinformatics. Protein function can be elucidated from its structure. Protein secondary structure prediction has attracted great attention since it’s the input feature of many bioinformatics problems. The variety of proposed computational methods for protein secondary structure prediction is very extensive. Nevertheless they couldn’t achieve much due to the existing obstacles such as abstruse protein data patterns, noise, class imbalance and high dimensionality of encoding schemes of amino acid sequences. With the advent of machine learning and later ensemble approaches, a considerable elevation was made. In order to reach a meaningful conclusion about the strength, bottlenecks and limitations of what have been done in this research area, a review of the literature will be of great benefit. Such review is advantageous not only to wrap what has been accomplished by far but also to cast light for the future decisions about the potential and unseen solutions to this area. Consequently in this paper it’s aimed to review different computational approaches for protein secondary structure prediction with the focus on machine learning methods, addressing different parts of the problem’s area. Manuscript profile