There are several theories for the basis of data mining include the following −Data reduction − In this theory, the basis of data mining is to reduce the data representation. Data reduction trades certainty for speed in response to the need to obtain fast approximate answers to queries on huge ... Read More

Web usage mining is used to derive useful data, information, knowledge from the weblog data, and helps in identifying the user access designs for web pages.In Mining, the management of web resources, the individual is thinking about data of requests of visitors of a website that are composed as web ... Read More

A hub is a set of Web pages that supports sets of links to authorities. Hub pages cannot be prominent, or there can exist some links pointing to them; however, they supports links to a set of prominent sites on a general topic.Such pages can be lists of recommended connections ... Read More

Document clustering is the important techniques for organizing files in an unsupervised manner. When documents are represented as term vectors, the clustering methods can be applied. The document space is continually of large dimensionality, ranging from various hundreds to thousands.Due to the curse of dimensionality, it makes sense to first ... Read More

Automated document classification is an essential text mining service because the existence of a tremendous number of on-line files, it is endless yet important to be able to automatically organize such records into classes to support document retrieval and sucessive analysis.Document classification has been used in automated topic tagging (i.e., ... Read More

Statistical spatial data analysis has been a famous techniques to exploring spatial data and analysing geographic data. The term geostatistics is related to continuous geographic area, whereas the term spatial statistics is related to discrete space.In a statistical model that manages non-spatial records, one generally consider statistical independence between different ... Read More

A set-valued attribute can be of homogeneous or heterogeneous type. Generally, set-valued information can be generalized byGeneralization of every value in the set to its equivalent higher-level conceptDerivation of the usual behavior of the set, including the multiple elements in the set, the types or value ranges in the set, ... Read More

Tuple ID propagation is an approach for implementing virtual join, which highly improves effectiveness of multirelational classification. Rather than physically joining relations, they are virtually combined by connecting the IDs of target tuples to tuples in non-target relations.In this method the predicates can be computed as if a physical join ... Read More

The BLAST algorithm was produced by Altschul, Gish, Miller, around 1990 at the National Center for Biotechnology Information (NCBI). BLAST is used to derive functional and evolutionary relationships among sequences and to help recognize members of gene families.The NCBI website includes several common BLAST databases. As per their content, they ... Read More

The alignment depends on the fact that all living organisms are associated by evolution. This uses that the nucleotide (DNA, RNA) and proteins series of the species that are nearer to each other in evolution must exhibit higher similarities.An alignment is the phase of lining up sequences to obtain a ... Read More