A Constellation Graph Based Approach for Ontology Construction

2013 ◽  
Vol 397-400 ◽  
pp. 2540-2545
Author(s):  
Yi Li Liu ◽  
Yang Yang

The ontology construction methodology frameworks used so far are limited in certain domains lack of mature knowledge hierarchy and require the reference alignments to be specified manually. This paper presents a constellation graph based method to build ontologies including two critical steps: transform the property of the concepts abstracted into the corresponding data; draw a constellation graph based on the data and the classes in the same constellation part constitute a new kind of classes. This approach can facilitate ontology construction process with little human efforts and be more time-saving. A practical example is used to illustrate the performance of this approach.

2020 ◽  
Vol 47 (1) ◽  
pp. 31-44
Author(s):  
Shiv Shakti Ghosh ◽  
Subhashis Das ◽  
Sunil Kumar Chatterjee

In this paper, we propose an ontology building method, called human-centric faceted approach for ontology construction (HCFOC). HCFOC uses the human-centric approach, improvised with the idea of selective dissemination of information (SDI), to deal with context. Further, this ontology construction process makes use of facet analysis and an analytico-synthetic classification approach. This novel fusion contributes to the originality of HCFOC and distinguishes it from other existing ontology construction methodologies. Based on HCFOC, an ontology of the tourism domain has been designed using the Protégé-5.5.0 ontology editor. The HCFOC methodology has provided the necessary flexibility, extensibility, robustness and has facilitated the capturing of background knowledge. It models the tourism ontology in such a way that it is able to deal with the context of a tourist’s information need with precision. This is evident from the result that more than 90% of the user’s queries were successfully met. The use of domain knowledge and techniques from both library and information science and computer science has helped in the realization of the desired purpose of this ontology construction process. It is envisaged that HCFOC will have implications for ontology developers. The demonstrated tourism ontology can support any tourism information retrieval system.


2015 ◽  
Vol 725-726 ◽  
pp. 1007-1012 ◽  
Author(s):  
Yury Panibratov ◽  
Arkady Larionov

Time is presented as a special category of resource in the investment and construction process influencing directly or indirectly the final economic results of this type of activity. The main emphasis is placed by the authors in the course of justifying their approach on giving consideration in the context of this publication to such parameters as the service live of the ready construction product; investments payback period; duration of object construction; intensity of investment in time; labor productivity, etc. Proceeding from the revealed time losses between designing and construction; preparation to construction and its beginning; inter-shift and whole-shift downtime due to unsatisfactory production discipline; failures to meet the production resources delivery dates; disturbed plans of performing works, a conclusion has been made on the fact that solution of each of the foregoing tasks is the direct time saving and one of the main trends for increasing economic effectiveness of construction. It has been justified that the intensity of investing in time shall grow from a minimum at the initial stage to a maximum at the final stage.


Author(s):  
Subramaniyaswamy Vairavasundaram ◽  
Logesh R.

The rapid growth of web technologies had created a huge amount of information that is available as web resources on Internet. Authors develop an automatic topic ontology construction process for better topic classification and present a corpus based novel approach to enrich the set of categories in the ODP by automatically identifying concepts and their associated semantic relationships based on external knowledge from Wikipedia and WordNet. The topic ontology construction process relies on concept acquisition and semantic relation extraction. Initially, a topic mapping algorithm is developed to acquire the concepts from Wikipedia based on semantic relations. A semantic similarity clustering algorithm is used to compute similarity to group the set of similar concepts. The semantic relation extraction algorithm derives associated semantic relations between the set of extracted topics from the lexical patterns in WordNet. The performance of the proposed topic ontology is evaluated for the classification of web documents and obtained results depict the improved performance over ODP.


Author(s):  
A.V. Trifonov ◽  
M.S. Volodkin ◽  
D.N.. Poltavskiy

The works associated with the construction of infrastructure facilities in the field require significant involvement of highly qualified specialists, high-quality implementation of these works and it requires adjustment of the developed project documentation directly in the construction process. PJSC «Gazprom neft» is faced with the task of increasing the efficiency of capital projects, in particular, reducing the time for their implementation. The faster the field is equipped and ready to start production, the sooner the capital investment in the project will pay off. The article discusses the method of organizing the construction (arrangement) using block-complete devices, namely one of its methods – superblocks. The essence of the method is the manufacture in the factory of modules, enlarged mounting assemblies, instrumentation and automation devices and their subsequent enlarged assembly into a large-capacity unit (superblock). The mass of the superblock can reach up to 1000 tons. The use of superblocks in the development of oil and gas fields guarantees high productivity, time saving and the quality of the facilities being built.


2013 ◽  
Vol 347-350 ◽  
pp. 2809-2813
Author(s):  
Yan Liu ◽  
Sheng Quan Liu ◽  
Peng Li

In this paper, fuzzy formal concept analysis is introduced to the tourism domain ontology construction process, first fuzzy formal concept analysis of uncertain information in the domain of tourism,then through the conceptual clustering generated fuzzy concept hierarchy, lastly mapping to get fuzzy ontology prototype. A example shows that the method is feasible and effective.


2006 ◽  
Vol 16 (6) ◽  
pp. 721-729
Author(s):  
In-K. Lee ◽  
Suk-T. Seo ◽  
Hye-C. Jeong ◽  
Do-Sam Hwang ◽  
Soon-H. Kwon

Author(s):  
B. Carragher ◽  
M. Whittaker

Techniques for three-dimensional reconstruction of macromolecular complexes from electron micrographs have been successfully used for many years. These include methods which take advantage of the natural symmetry properties of the structure (for example helical or icosahedral) as well as those that use single axis or other tilting geometries to reconstruct from a set of projection images. These techniques have traditionally relied on a very experienced operator to manually perform the often numerous and time consuming steps required to obtain the final reconstruction. While the guidance and oversight of an experienced and critical operator will always be an essential component of these techniques, recent advances in computer technology, microprocessor controlled microscopes and the availability of high quality CCD cameras have provided the means to automate many of the individual steps.During the acquisition of data automation provides benefits not only in terms of convenience and time saving but also in circumstances where manual procedures limit the quality of the final reconstruction.


1970 ◽  
Vol 102 (3) ◽  
pp. 300-303
Author(s):  
N. Hjorth
Keyword(s):  

2018 ◽  
Vol 34 (4) ◽  
pp. 229-237 ◽  
Author(s):  
Francesca Chiesi ◽  
Andrea Bonacchi ◽  
Caterina Primi ◽  
Alessandro Toccafondi ◽  
Guido Miccinesi

Abstract. The present study aimed at evaluating if the three-item sense of coherence (SOC) scale developed by Lundberg and Nystrom Peck (1995) can be effectively used for research purpose in both nonclinical and clinical samples. To provide evidence that it represents adequately the measured construct we tested its validity in a nonclinical (N = 658) and clinical sample (N = 764 patients with cancer). Results obtained in the nonclinical sample attested a positive relation of SOC – as measured by the three-item SOC scale – with Antonovsky’s 13-item and 29-item SOC scales (convergent validity), and with dispositional optimism, sense of mastery, anxiety, and depression symptoms (concurrent validity). Results obtained in the clinical sample confirmed the criterion validity of the scale attesting the positive role of SOC – as measured by the three-item SOC scale – on the person’s capacity to respond to illness and treatment. The current study provides evidence that the three-item SOC scale is a valid, low-loading, and time-saving instrument for research purposes on large sample.


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