Results 21 to 30 of about 2,525,472 (291)

Computing Possible and Certain Answers over Order-Incomplete Data [PDF]

open access: yes, 2019
This paper studies the complexity of query evaluation for databases whose relations are partially ordered; the problem commonly arises when combining or transforming ordered data from multiple sources.
Amarilli, Antoine   +3 more
core   +2 more sources

Missing.... presumed at random: cost-analysis of incomplete data [PDF]

open access: yes, 2002
When collecting patient-level resource use data for statistical analysis, for some patients and in some categories of resource use, the required count will not be observed. Although this problem must arise in most reported economic evaluations containing
Bang   +31 more
core   +2 more sources

Analysis of Incomplete Data and an Intrinsic-Dimension Helly Theorem [PDF]

open access: yes, 2008
The analysis of incomplete data is a long-standing challenge in practical statistics. When, as is typical, data objects are represented by points in R^d , incomplete data objects correspond to affine subspaces (lines or Δ-flats).With this motivation we ...
Gao, Jie   +2 more
core   +2 more sources

Profile Likelihood and Incomplete Data [PDF]

open access: yesInternational Statistical Review, 2010
Summary According to the law of likelihood, statistical evidence is represented by likelihood functions and its strength measured by likelihood ratios. This point of view has led to a likelihood paradigm for interpreting statistical evidence, which carefully distinguishes evidence about a parameter from error probabilities and personal belief.
openaire   +3 more sources

Textually Summarising Incomplete Data [PDF]

open access: yesProceedings of the 10th International Conference on Natural Language Generation, 2017
Many data-to-text NLG systems work with data sets which are incomplete, ie some of the data is missing. We have worked with data journalists to understand how they describe incomplete data, and are building NLG algorithms based on these insights. A pilot evaluation showed mixed results, and highlighted several areas where we need to improve our system.
Stephanie Inglis   +2 more
openaire   +1 more source

Uncovering Suspicious Activity From Partially Paired and Incomplete Multimodal Data

open access: yesIEEE Access, 2017
Multimodal data can be used to gain additional perspective on a phenomenon. For applications, such as security and the detection of suspicious activity, the need to aggregate and analyze data from multiple modes is vital.
Carter Chiu, Justin Zhan, Felix Zhan
doaj   +1 more source

Phase Identification With Incomplete Data

open access: yesIEEE Transactions on Smart Grid, 2018
Phase identification is a process to determine which of the three phases a particular house is connected to. The state-of-the-art identification methods usually exploit smart metering data. However, the data sets are not always available and the major challenge is hence to identify phases with incomplete data set.
Minghao Xu, Ran Li 0004, Furong Li
openaire   +2 more sources

Unsupervised and Supervised Feature Selection for Incomplete Data via L2,1-Norm and Reconstruction Error Minimization

open access: yesApplied Sciences, 2022
Feature selection has been widely used in machine learning and data mining since it can alleviate the burden of the so-called curse of dimensionality of high-dimensional data.
Jun Cai, Linge Fan, Xin Xu, Xinrong Wu
doaj   +1 more source

Exploiting microvariation: How to make the best of your incomplete data [PDF]

open access: yes, 2018
n this article we discuss the use of big corpuses or databases as a first step for qualitative analysis of linguistic data. We concentrate on ASIt, the Syntactic Atlas of Italy, and take into consideration the different types of dialectal data that can ...
Garzonio, Jacopo, Poletto, Cecilia
core   +1 more source

Determining the Macroscopic Fundamental Diagram from Mixed and Partial Traffic Data

open access: yesPromet (Zagreb), 2018
The macroscopic fundamental diagram (MFD) is a graphical method used to characterize the traffic state in a road network and to monitor and evaluate the effect of traffic management.
Yangbeibei Ji   +3 more
doaj   +1 more source

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