A Temporal expert finding methodology based on united author-document-topic graphs

Download

index.pdf

Date

2014

Author

Kılınç, Ahmet Emre

Metadata

Show full item record

Item Usage Stats

116
views

26
downloads

Expert finding is a challenging research topic due to fast paced technological development resulting in changes in people’s expertise areas in time. However, the majority of the studies in the literature about expert finding systems do not take into account such temporal changes. For example, probabilistic models, which are widely used in this domain, are based on word or term associations between queries and documents. On the other hand, separated author-document graphs, which are used as baseline approach in this thesis, are based on topic modeling techniques. This approach does not take into consideration both queries and documents in the same topic modeling process, but it considers only documents in topic modeling process. As a result, it impairs relations between topic queries and documents. In this thesis, a novel expert finding system which uses domain limited Latent Dirichlet Allocation (LDA) based topic modeling and dynamic, united author-document-topic graphs is proposed. The proposed method is tested with ArnetMiner and UVT datasets and outperforms the baseline separated author-document-topic approach.

Subject Keywords

Querying (Computer science)., Database searching., Expert systems (Computer science).

URI

http://etd.lib.metu.edu.tr/upload/12617849/index.pdf
https://hdl.handle.net/11511/23897

Collections

Graduate School of Informatics, Thesis

Suggestions

OpenMETU
Core

A unifying grid approach for solving potential flows applicable to structured and unstructured grid configurations Cete, A. Ruhsen; Yuekselen, M. Adil; Kaynak, Uenver (Elsevier BV, 2008-01-01) In this study, an efficient numerical method is proposed for unifying the structured and unstructured grid approaches for solving the potential flows. The new method, named as the "alternating cell directions implicit - ACDI", solves for the structured and unstructured grid configurations equally well. The new method in effect applies a line implicit method similar to the Line Gauss Seidel scheme for complex unstructured grids including mixed type quadrilateral and triangle cells. To this end, designated al...
A Holistic Work System Framework (HWSF) Development Using Systems Thinking Ozalp, Egemen; Baykal, Buyurman (2014-07-31) Technology and Engineering Management Activities induced the awareness of Work Systems (WS) in Business Conduction. During WS activities and decisions settings, typically technical perspectives are espoused heavily. Although, remedies of this kind require holistic approaches, such approaches are not very common. One of the main reasons for this inadequacy is the lack of conforming guidance. In this work, the aim is to create a framework as guidance for WS activities. The Holistic Work System Framework (HWSF...
An adaptive fully discontinuous Galerkin level set method for incompressible multiphase flows KARAKUS, Ali; WARBURTON, Tim; AKSEL, MEHMET HALUK; Sert, Cüneyt (Emerald, 2018-01-01) Purpose This study aims to focus on the development of a high-order discontinuous Galerkin method for the solution of unsteady, incompressible, multiphase flows with level set interface formulation.
A LOCAL EXTREMA BASED METHOD ON 2D BRIGHTNESS TEMPERATURE MAPS FOR DETECTION OF ARCHAEOLOGICAL ARTIFACTS SOYDAN, HİLAL; DÜZGÜN, HAFİZE ŞEBNEM; Alatan, Abdullah Aydın (2016-07-15) Archaeological studies using computer vision based analysis methods on thermal imageries mainly lack an important stage of pointwise detection of artifact positions, which is needed for the automation of the system in a generic application. In this paper, we propose a pointwise detection method working in the thermal range of hyperspectral band for archaeological artifacts. The proposed method first optimally converts a given 3D hyperspectral image of the searched scene into a 2D brightness-temperature map ...
A generalized expert system for database design Doğaç, Asuman; Yürüten, Betigül; Spaccapietra, Stefano (Institute of Electrical and Electronics Engineers (IEEE), 1989-4) Generalized Expert System for Database Design (GESDD) is a compound expert system made up of two parts: (1) an expert system for generating methodologies for database design, called ESGM; and (2) an expert system for database design, called ESDD. ESGM provides a tool for the database design expert to specify different design methodologies or to modify existing ones. The database designer uses ESDD in conjunction with one of these methodologies to design a database starting from the requirement specification...

Citation Formats

A. E. Kılınç, “A Temporal expert finding methodology based on united author-document-topic graphs,” M.S. - Master of Science, Middle East Technical University, 2014.