Rakesh Mohanty

  1. A New Proposed Cost Model for List Accessing Problem using Buffering.

    Authors: Rakesh Mohanty, Sasmita Tripathy, Seetaya Bhoi
    Subjects: Data Structures and Algorithms
    Abstract

    There are many existing well known cost models for the list accessing
    problem. The standard cost model developed by Sleator and Tarjan is most widely
    used. In this paper, we have made a comprehensive study of the existing cost
    models and proposed a new cost model for the list accessing problem. In our
    proposed cost model, for calculating the processing cost of request sequence
    using a singly linked list, we consider the access cost, matching cost and
    replacement cost. The cost of processing a request sequence is the sum of
    access cost, matching cost and replacement cost.

  2. Characterization of Request Sequences for List Accessing Problem and New Theoretical Results for MTF Algorithm.

    Authors: Rakesh Mohanty, Burle Sharma, Sasmita Tripathy
    Subjects: Data Structures and Algorithms
    Abstract

    List Accessing Problem is a well studied research problem in the context of
    linear search. Input to the list accessing problem is an unsorted linear list
    of distinct elements along with a sequence of requests, where each request is
    an access operation on an element of the list. A list accessing algorithm
    reorganizes the list while processing a request sequence on the list in order
    to minimize the access cost.

  3. A secured Cryptographic Hashing Algorithm.

    Authors: Rakesh Mohanty, Niharjyoti Sarangi, Sukant kumar Bishi
    Subjects: Cryptography and Security
    Abstract

    Cryptographic hash functions for calculating the message digest of a message
    has been in practical use as an effective measure to maintain message integrity
    since a few decades. This message digest is unique, irreversible and avoids all
    types of collisions for any given input string. The message digest calculated
    from this algorithm is propagated in the communication medium along with the
    original message from the sender side and on the receiver side integrity of the
    message can be verified by recalculating the message digest of the received
    message and comparing the two digest values.

  4. Online Algorithms for Self-Organizing Sequential Search - A Survey.

    Authors: Rakesh Mohanty, N. S. Narayanaswamy
    Subjects: Data Structures and Algorithms
    Abstract

    The main objective of this survey is to present the important theoretical and
    experimental results contributed till date in the area of online algorithms for
    the self organizing sequential search problem, also popularly known as the List
    Update Problem(LUP) in a chronological way. The survey includes competitiveness
    results of deterministic and randomized online algorithms and complexity
    results of optimal off line algorithms for the list update problem.

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