Performance of any search engine relies heavily on its Web crawler. Web crawlers are the
programs that get webpages from the Web by following hyperlinks. These webpages are …

The first edition of this book appeared in 1991 when the technology was new and there were
not too many products. In the Preface to the first edition, we had quoted Michael Stonebraker …

From the last few years, Internet of Things has revolutionized the entire world. In this, various
smart objects perform the tasks of sensing and computing to provide uninterrupted services …

Finding information on Web is a difficult and challenging task because of the extremely large
volume of data. Search engine can be used to facilitate this task, but it is still difficult to cover …

Sentiments and opinions expressed in Web pages towards objects, entities, and products
constitute an important portion of the textual content available in the Web. In the last decade …

The Web has become the main source of information in the digital world, expanding to
heterogeneous domains and continuously growing. By means of a search engine, users can …

Although a well-established risk factor for lung cancer, the impact of smoking on the survival
of non-small cell lung cancer (NSCLC) is not well known. We performed a retrospective …

The traditional process of focused web crawler is to harvest a collection of web documents
that are focused on the topical subspaces. The intricacy of focused crawlers is identifying the …

As we discussed in previous chapters, distributed databases are typically replicated. The
purposes of replication are multiple: 1. System availability. As discussed in Chapter 1 …

Search Engine for South-East Europe (SE4SEE) is a socio-cultural search engine running
on the grid infrastructure. It offers a personalized, on-demand, country-specific, category …