A novel file splitting technique for the reduction of the nth-order entropy of text files is proposed. The technique is based on mapping the original text file into a non-ASCII binary file using a new codeword assignment method and then the resulting binary file is split into several subfiles each contains one or more bits from each codeword of the mapped binary file. The statistical properties of the subfiles are studied and it is found that they reflect the statistical properties of the original text file which is not the case when the ASCII code is used as a mapper. The nth-order entropy of these subfiles are determined and it is found that the sum of their entropies is less than that of the original text file for the same values of extensions. These interesting statistical properties of the resulting subfiles can be used to achieve better compression ratios when conventional compression techniques are applied to these subfiles individually and on a bit-wise basis rather than on character-wise basis.<\/p>\r\n","references":"[1] T. C. Bell, J. G. Cleary, and I. H. Witten, Text Compression, Prentice-\r\nHall, Englewood cliffs NJ, 1990.\r\n[2] G. Held and T. R. Marshall, Data Compression, John Wiley, New York,\r\n1991.\r\n[3] M. F. Lynch, \"Compression of bibliographic files using an adaptation of\r\nrun-length coding,\" Information Storage and Retrieval, Vol. 9, pp. 207\u00d4\u00c7\u00f6\r\n214, 1973.\r\n[4] A. M. Elabdalla and M. I. Irshid, \"An efficient bitwise Huffman coding\r\ntechnique based on source mapping,\" Computers and Electrical\r\nEngineering, Vol. 27, pp. 265\u00d4\u00c7\u00f6272, 2001.\r\n[5] A. M. Jaradat and M. I. Irshid, \"A simple binary run-length compression\r\ntechnique for non-binary sources based on source mapping,\" Active and\r\nPassive Electronic Components, Vol. 24, pp. 211\u00d4\u00c7\u00f6221, 2001.\r\n[6] A. A. Sharieh, \"Enhancement of Huffman coding for the compression of\r\nmultimedia files,\" International Journal of Information Technology, Vol.\r\n1, pp. 211\u00d4\u00c7\u00f6213, 2004.\r\n[7] Calgary-corpus:\r\nftp:\/\/ftp.cpsc.ucalgary.ca\/pub\/projects\/text.compression.corpus","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 7, 2007"}