The pixel-value differencing (PVD) scheme uses the difference value between two consecutive pixels in a block to determine how many secret bits should be embedded. There are two types of the quantization range table in Wu and Tasi’s method. The first was based on selecting the range widths of [8, 8, 16, 32, 64, 128], to provide large capacity. The second was based on selecting the range widths ...

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8 Table 4. Statistical indicators of non-normality for loglO-transformed data for leachers and non-leachers for each phy-sicochemical test type. ..

Tables on the Web contain a vast amount of knowledge in structured form. To tap into this valuable resource, we address problem table retrieval: answering an information need with ranked list tables. We investigate two different variants, based how is expressed: as keyword query or existing (“query-by-table”). The main novel contribution work semantic retrieval framework for matching needs (key...

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