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results, to assess the sentiment about key entities. e second block capitalizes on
the availability of services exposing the results of the data and sentiment analyses,
and allows users to construct self-service environments in which they can combine
interesting and trustworthy services that can support their decisions. e next sec-
tions provide details about the design of these two architectural components.
Table12.3 Data Quality Issues in Sentiment Analysis
Quality Issue Related to Selection
and Characterization of Web
Information Sources
Quality Issue Related to
Interpretation and Evaluation of Web
Information ...