Summary of Computer Doctoral thesis

The objective of the thesis: Mining association rules with time-interval between events in temporal quantitative databases called fuzzy time-interval association rules; mining sequential patterns with time-interval between events in temporal quantitative sequential databases called fuzzy sequential patterns with fuzzy time intervals; mining common sequential rules with time-interval between events in temporal quantitative sequential databases called fuzzy common sequential rules with fuzzy time intervals.

27p beloveinhouse01 15-08-2021 15 4   Download

Research objectives of the thesis: Research the theories of complex fuzzy sets, complex fuzzy logic and measures based on complex fuzzy sets; research and development of fuzzy inference system based on complex fuzzy sets; research applied techniques to reduce rules, optimize fuzzy rules in complex fuzzy inference system; research on how to represent rules based on fuzzy knowledge graphs to reduce inference computation time for the test set and deal with the cases where the new dataset is not present in the training data set.

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The research in this thesis follows two directions: The first, using high performance computing currently available, we studied atomic and molecular emissions in astrophysical environment. The radiative transfer model was applied to explain the characteristics of the recombination line masers Hnα in the envelope of the star MWC 349A.

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The objective of the thesis is to propose a solution to mine the weighted sequential patterns between sequences in sequence databases with time interval and quantitative sequence databases with time interval.

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The objective of the thesis: To find decision laws on the data block and block’s slice. To find decision laws bettwen object groups on the block which has index attribute value change, particulary when smoothing, or roughing attribute value. To find decision laws bettwen object groups on the block when adding or removing block’s elements.

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The objective of the thesis: Proposes filter-wrapper algorithms for fuzzy rough set based attribute reduction in decision tables to reduce the cardinality of reduct and increase significantly the classification accuracy.

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Research objectives: To study rainfall-runoff changes, to downscale rainfall and surface over time and space, and to establish scientific base for calculation of design flood for transportation structures.

28p dolphintaletale 23-04-2021 29 6   Download

The propose a new method aiming to adjust the TXOP parameter according to a dynamic mechanism that suits the priority of each data type from the existing limitations with TXOP parameter in IEEE 802.11 EDCA; the propose a novel fuzzy logic approach for enhancing the fairness of low priority data flows in IEEE 802.11 EDCA.

27p capheviahe27 23-02-2021 32 3   Download

The objective of the thesis focus on solving three problems: To find decision laws on the data block and block’s slice; to find decision laws bettwen object groups on the block which has index attribute value change, particulary when smoothing, or roughing attribute value; to find decision laws bettwen object groups on the block when adding or removing block’s elements.

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The first is the hybrid filterwrapper algorithm proposal for finding the reduction set of the decision table using advanced fuzzy distance measurements and other measurements basing on fuzzy rough set to minimize2 the number of attributes of reduction set. Reduce and improve the accuracy of the classification model.

26p capheviahe27 23-02-2021 31 4   Download

Research indexing method based on R-tree method to increase the efficiency of XPath queries on XML data, through intermediate data converted into numerical coordinates of tags; use the method of converting XML structured text data into numeric data that can be represented on 2-dimensional space (can be extended to many dimensions).

26p capheviahe26 25-01-2021 19 4   Download

Study methods of semantically expressing fuzzy concepts based the MF or other mathematical methods providing that they express the semantics of the most suitable concepts; studying methods of knowledge exploitation in general and fuzzy rules in particular; sesearch different data representations of information so that it can be exploited in ARs in a diverse and meaningful way.

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The research thesis aims to evaluate the rate of brain artery imaging on computerized tomography images of 256 sequences; Describes common and anatomical variations of the cerebral arteries. Invite you to consult!

26p gaocaolon7 18-09-2020 28 2   Download

Research the results of the application of follow-up and diagnosis of nodules in the lungs of Mayo Clinic hospital-United States after 3-6 months.

31p angicungduoc6 21-07-2020 33 3   Download

Research object are the organization and state management activities on ITI in Vietnam. The scope limited in the contents of state management on ITI systems, focusing on policies, strategies, planning, plans and programs; legal documents; inspection and examination to eliminate violations; organizing the state management apparatus on ITI in the field of manufacturing computer hardware and computer software.

30p dungmaithuy 18-09-2019 46 4   Download

Main points of thesis: Fabrication of the carbon nanotube based internal combustion engine oils; measurement, characterization of CNTs-based oils regarding their structures, physical, thermal, and electrical properties; heat dissipation modeling and thermal-conductivity computation of the carbon nanotube based internal combustion engine oils, and comparison with the experimental results.

23p xacxuoc4321 09-07-2019 26 4   Download

This thesis has achieved some following results: Research and analysis of interpretability are as a study of the relationship between RWS of linguistic expressions and computational semantics of computational expressions assigned to linguistic expressions. The schema proposal solves the problem of interpretability of the computational representation of liguistic frame of cognitive (LFoC).

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Research subjects of the thesis are ontology, inconsistent knowledge in ontologies and methods of processing inconsistent knowledge in ontologies. By analyzing research motivations, we address objectives of research for processing inconsistent in ontologies by the two tasks: querying andintegrating. In particularly, we restrict the objectives of research by three problems following: determine meaningful result for querying inconsistent ontology, resolving conflict of concept level in ontology integration, esolving conflict of axiom level in ontology integration.

26p dtphuongg 10-09-2018 33 4   Download

Research objectives: Building a method of granulating partitions of domain of interpretation in DLs. This method is base on bisimulation and using suitable selectors as well as information gain measure; proposing bisimulation-based concept learning algorithms for knowledge bases in DLs using Setting.

31p change03 06-05-2016 50 3   Download

Research objectives: Studying and evaluation of active queue management mechanisms to find out the advantages and disadvantages of each mechanism, in order to classify and evaluate application performance for mechanisms and using fuzzy logic to improve active queue management mechanism; the results of the first goals is to perform study motivation first and will be the foundation for the theory and simulation improvements of the thesis.

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