A Comparison of Mining Incomplete and Inconsistent Data

Author(s):  
Patrick G. Clark ◽  
Cheng Gao ◽  
Jerzy W. Grzymala-Busse
Keyword(s):  
Semantic Web ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 475-521
Author(s):  
Camille Bourgaux ◽  
Patrick Koopmann ◽  
Anni-Yasmin Turhan

Author(s):  
Stanislav Belyakov ◽  
Alexander Bozhenyuk ◽  
Andrey Glushkov ◽  
Igor Rozenberg

Author(s):  
Ido Millet

Relational databases and the current SQL standard are poorly suited to retrieval of hierarchical data. After demonstrating the problem, this chapter describes how two approaches to data denormalization can facilitate hierarchical data retrieval. Both approaches solve the problem of data retrieval, but as expected, come at the cost of difficult and potentially inconsistent data updates. This chapter then describes how we can address these update-related shortcomings via back-end (triggers) logic. Using a proper combination of denormalized data structure and back-end logic, we can have the best of both worlds: easy data retrieval and simple, consistent data updates.


2020 ◽  
Vol 12 (9) ◽  
pp. 142
Author(s):  
Zhijun Wu ◽  
Bohua Cui

Aiming at the problem of low interconnection efficiency caused by the wide variety of data in SWIM (System-Wide Information Management) and the inconsistent data naming methods, this paper proposes a new TLC (Type-Length-Content) structure hybrid data naming scheme combined with Bloom filters. This solution can meet the uniqueness and durability requirements of SWIM data names, solve the “suffix loopholes” encountered in prefix-based route aggregation in hierarchical naming, and realize scalable and effective route state aggregation. Simulation verification results show that the hybrid naming scheme is better than prefix-based aggregation in the probability of route identification errors. In terms of search time, this scheme has increased by 17.8% and 18.2%, respectively, compared with the commonly used hierarchical and flat naming methods. Compared with the other two naming methods, scalability has increased by 19.1% and 18.4%, respectively.


2013 ◽  
Vol 588 ◽  
pp. 127-133
Author(s):  
Damian Skupnik

The paper deals with diagnostic inference based on uncertain and simultaneously partly inconsistent data obtained, e.g. from different sensors. Such cases are very common in diagnostic practice and therefore there is a necessity to deal with them. Interesting approach to solving that kind of tasks consists in an application of the approximate statement network which represents the mutual relations between statements treated as necessary and sufficient conditions. The paper shows an example of applying a diagnostic model represented as the approximate statement network, to inference about technical state of a chosen object. The model was constructed in the REx system which also makes possible creating Bayesian and multimodal networks. Advantages and disadvantages concerning both constructing and using approximate statement networks were briefly described on the basis of obtained results. It seems that presented example shows the possibility of improving supervision systems, especially in regard to the complicated technical objects, by giving a mechanism of avoiding a confusion while making of diagnosis.


1988 ◽  
Vol 106 (11) ◽  
pp. 1504
Keyword(s):  

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