The verbose nature of XML has been mulled over again and again and many compression techniques for XML data have been excogitated over the years. Some of the techniques incorporate support for querying the XML database in its compressed format while others have to be decompressed before they can be queried. XML compression in which querying is directly supported instantaneously with no compromi...

One way to improve inverted file compression is to use the cluster property [1] of document collection, which states that term occurrences are not uniformly distributed. Some terms are more frequently used in some parts of the collection than in others. The corresponding part of the inverted list will consequently be small d-gap values clustered. Interpolative code [9] exploits the cluster prop...

For backup storage, increasing compression allows users to protect more data without increasing their costs or storage footprint. Though removing duplicate regions (deduplication) and traditional compression have become widespread, further compression is attainable. We demonstrate how to efficiently add delta compression to deduplicated storage to compress similar (nonduplicate) regions. A chal...

Lossless image compression is critical task in image processing. Vector quantization method is fast compression method of image compression, but this is lossy technique of image compression. But gives the better compression ratio and PSNR value. the better compression rate can be achieved by vector quantization (VQ) and SVQ scheme, but the quality of the recovered image is about 16 to 47 dB in ...

percutaneous vertebroplasty is a promising therapeutic technique for pain control in patients with pathologic fractures of vertebral bodies. percutaneous vertebroplasty is an appropriate treatment for vertebral pathologic fractures, which is resistant to other usual treatment. it is a useful and only choice in special cases, because of less tissue damage and there is no risk of open surgery and...

In this paper, Wavelet Transform, Fractional Fourier Transform (FrFT) and Fractional Cosine Transform (FrCT) are compared using Mean Square Error (MSE) and Peak signal-toNoise Ratio (PSNR) in the field of image compression. Wavelet provides better MSE and PSNR at lower Compression Ratio (CR), whereas FrFT provides good result at higher CR and FrCT provides same results as that of Wavelet at hig...

Starting with Hbase's own characteristics, this paper designs an inverted index table which includes key word, document ID and position list, and the table can saves a lot of storage space. After then, on the basis of the table, the paper provides key as dictionary compression with high compression ratio and high decompression rate for the data block. At last, this paper tests the effectiveness...

The behaviour of soil at the location of the project and interactions of the earth materials during and after construction has a major influence on the success, economy and safety of the work. Another complexity associated with some geotechnical engineering materials, such as sand and gravel, is the difficulty in obtaining undisturbed samples and time consuming involving skilled technician. Com...

these two are in tension—data compression saves space, but at the expense of added access time; and indexing methods provide fast access, but usually at the expense of considerable amounts of additional storage space. Indeed, a complete index to a large body of text can be larger than the text itself—after all, it might store the location of every word in the text. The prospect of digital libra...