In recent years there has been a massive growth in textual information especially in the internet.While searching for some topic especially some new topic in the internet it will be easier if someone knows the pre-requisites and post-requisites of that topic. Often the topics are found without any proper title and it becomes difficult later on to find which document was for which topic.A text categorization method can provide solution to this problem. Text categorization means assigning an uncategorized document into one or more pre-defined categories.So far researches have focused on using...

In the era of computers, when human dependency on network as well as usage of images in personal and professional area has increased rapidly, then there problem arises that how effectively we can manage the flow of images over open network from un-authorized access and as images can hold more information than textual data and potential usage of images in corporate world, so another scope of work includes to securely store the images such that only authorized users can access them by means of proper channel. Image encryption has become the need of time to keep images secure and this was the...