EAN: 9783031007828

SYNTHESIS LECTURES ON DATA MINING AND KNOWLEDGE...

A lot of digital ink has been spilled on big data over the past few years. Most of this surge
owes its origin to the various types of unstructured data in the wild  among which the
proliferation of text-heavy data is particularly overwhelming  attributed to the daily use of
web documents  business reviews  news  social posts  etc.  by so many people worldwide.A core
challenge presents itself: How can one efficiently and effectively turn massive  unstructured
text into structured representation so as to further lay the foundation for many other
downstream text mining applications? In this book  we investigated one promising paradigm for
representing unstructured text  that is  through automatically identifying high-quality phrases
from innumerable documents. In contrast to a list of frequent n-grams without proper filtering
users are often more interested in results based on variable-length phrases with certain
semantics such as scientific concepts  organizations  slogans  and so on. We propose new
principles and powerful methodologies to achieve this goal  from the scenario where a user can
provide meaningful guidance to a fully automated setting through distant learning. This book
also introduces applications enabled by the mined phrases and points out some promising
research directions.

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