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The genome of all living organisms contains all hereditary information encoded in DNA. Due to the ever increasing demand on DNA based technological developments, a larger number of DNA sequences have been identified and stored in genomic databases. The sizes of the databases are expected to increase exponentially. Compression is hence desirable to reduce(More)
In this paper, we propose RIDBE (Reinforced Intelligent Dictionary Based Encoding), a Dictionary-based reversible lossless text transformation algorithm. The basic philosophy of our secure compression is to preprocess the text and transform it into some intermediate form which can be compressed with better efficiency and which exploits the natural(More)
In this paper we present an approach which is an alternative to compression algorithms in vogue such as Huffman encoding, arithmetic encoding, the Lempel-Ziv family, Dynamic Markov Compression (DMC), Prediction by Partial Matching (PPM), and Burrows-Wheeler Transform (BWT) based algorithms. This is aimed at developing generic, reversible transformations(More)
There has been an unparalleled explosion of textual information flow over the internet through electronic mail, web browsing, digital library and information retrieval systems, etc. Since there is a persistent increase in the amount of data that needs to be transmitted or archived, the importance of data compression is likely to increase in the near future.(More)
Random access text compression is a type of compression technique in which there is a direct access to the compressed data. It facilitates to start decompression from any place in the compressed file, not necessarily from first. If any byte changed during transmission, the remaining data can be retrieved safely. In this paper, a try has been made to develop(More)
George Klein died in the night between 9 and 10, December 2016 in his home in Lindingö near Stockholm, leaving his wife Eva and their 3 children with their family as well as an important scientific heritage , over 1385 publications in a number of scientific Journals. Most remarkable was his personality, kind, of easy contact, warm and friendly with an(More)