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- W4387674004 abstract "Abstract Table corpora such as VizNet or TURL which contain annotated semantic types per column are important to build machine learning models for the task of automatic semantic type detection. However, there is a huge discrepancy between corpora and real-world data lakes since they contain a huge fraction of numerical data which are not present in existing corpora. Hence, in this paper, we introduce a new corpus that contains a much higher proportion of numerical columns than existing corpora. To reflect the distribution in real-world data lakes, our corpus SportsTables has on average approx. 86% numerical columns, posing new challenges to existing semantic type detection models which have mainly targeted non-numerical columns so far. To demonstrate this effect, we show in this extended version paper of [18] the results of an extensive study using four different state-of-the-art approaches for semantic type detection on our new corpus. Overall, the results demonstrate significant performance differences in predicting semantic types for textual and numerical data." @default.
- W4387674004 created "2023-10-17" @default.
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- W4387674004 date "2023-10-16" @default.
- W4387674004 modified "2023-10-18" @default.
- W4387674004 title "SportsTables: A New Corpus for Semantic Type Detection (Extended Version)" @default.
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- W4387674004 doi "https://doi.org/10.1007/s13222-023-00457-y" @default.
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