Neamat El-Tazi

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We introduce a new technique for fast computation of structural join "pattern trees" in XML. Using a small amount of pre-computed path information, typically small enough to fit easily in main memory, we are able to render structural join computation almost independent of data set size. Our technique is amenable to bit-mapped processing, leading to further(More)
Opinions are considered a powerful source of market research. Social networks are the most popular mean for people to state their opinions about products and services. Companies invest in analysing their customers' opinions from multiple existing social media platforms. The knowledge extracted from social media contains sentiment data that is not included(More)
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