Results 21 to 30 of about 138,756 (354)
Aggregate-based Training Phase for ML-based Cardinality Estimation
, 2021 Cardinality estimation is a fundamental task in database query processing and optimization. As shown in recent papers, machine learning (ML)-based approaches may deliver more accurate cardinality estimations than traditional approaches. However, a lot of
Woltmann, Lucas +3 more
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The Development of Arabic Digit Knowledge in 4- to 7-Year-Old Children
Journal of Numerical Cognition, 2015 Recent studies indicate that Arabic digit knowledge rather than non-symbolic number knowledge is a key foundation for arithmetic proficiency at the start of a child’s mathematical career.
Birgit Knudsen +3 more
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Annals of Pure and Applied Logic, 2001 We prove that for every singular cardinal mu of cofinality omega, the complete Boolean algebra compP_mu(mu) contains as a complete subalgebra an isomorphic copy of the collapse algebra Comp Col(omega_1,mu^{aleph_0}). Consequently, adding a generic filter to the quotient algebra P_mu(mu)=P(mu)/[mu]^{
Menachem Kojman, Saharon Shelah
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Handling Limited Overlap in Observational Studies with Cardinality Matching
, 2021 :A common problem encountered in observational studies is limited overlap in covariate distributions across treatment groups. To address this problem, and avoid strong modeling assumptions, it has become common practice to restrict analyses to the ...
G. Visconti, J. Zubizarreta
semanticscholar +1 more source
Equivalence of Partition Functions Leads to Classification of Entropies and Means
Entropy, 2012 We derive a two-parameter family of generalized entropies, <em>S<sub>pq</sub></em>, and means <em>m<sub>pq</sub></em>. To this end, assume that we want to calculate an entropy and a mean for <em>n</
Michel S. Elnaggar, Achim Kempf
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Israel Journal of Mathematics, 2020 We introduce the notion of a critical cardinal as the critical point of sufficiently strong elementary embedding between transitive sets. Assuming the axiom of choice this is equivalent to measurability, but it is well-known that choice is necessary for the equivalence. Oddly enough, this central notion was never investigated on its own before.
Hayut, Yair, Karagila, Asaf
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Proceedings of the 24th International Conference on World Wide Web, 2015 We model and analyze cardinal contests, where a principal running a rank-order tournament has access to an absolute measure of the quality of agents’ submissions in addition to their relative rankings. We show that a mechanism that compares each agent’s output quality against a threshold to decide whether to award her the prize ...
Arpita Ghosh, Patrick Hummel
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ON CONFIGURATIONS CONCERNING CARDINAL CHARACTERISTICS AT REGULAR CARDINALS [PDF]
The Journal of Symbolic Logic, 2020 AbstractWe study the consistency and consistency strength of various configurations concerning the cardinal characteristics $\mathfrak {s}_\theta , \mathfrak {p}_\theta , \mathfrak {t}_\theta , \mathfrak {g}_\theta , \mathfrak {r}_\theta $ at uncountable regular cardinals $\theta $ .
Omer Ben-Neria, Shimon Garti
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Cardinality Estimation Method for Multitable JOIN Query Optimization [PDF]
Jisuanji gongcheng, 2022 Cardinality estimation is one of the important means to optimize database multitable JOIN queries.When the cardinality of a data table with a large number of data is estimated, data sampling is often used to obtain smaller samples to estimate the data ...
QIAN Wenyuan, JING Yinan, WANG Xiaoyang, WU Zhenhuan
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A Strategy of Efficient and Accurate Cardinality Estimation Based on Query Result [PDF]
Xibei Gongye Daxue Xuebao, 2018 Cardinality estimation is an important component of query optimization. Its accuracy and efficiency directly decide effect of query optimization. Traditional cardinality estimation strategy is based on original table or sample to collect statistics, then
doaj +1 more source