Now showing items 21-40 of 46

    • Hypergraph models and algorithms for data-pattern-based clustering 

      Ozdal, M. M.; Aykanat, C. (Springer, 2004)
      In traditional approaches for clustering market basket type data, relations among transactions are modeled according to the items occurring in these transactions. However, an individual item might induce different relations ...
    • Identification of individuals' emotional response to the indoor soundscape in public study areas via semantic differentiation 

      Acun, Volkan; Yilmazer, Semiha (Institute of Noise Control Engineering, 2017)
      Aims of this research is to identify individuals' emotional response to the sound environment of public study areas. The research has taken place in the public study areas of Bilkent University Campus. These study areas ...
    • Information-based approach to punctuation 

      Say, Bilge (AAAI, 1997-07)
      This thesis analyzes, in an information-based framework, the semantic and discourse aspects of punctuation, drawing computational implications for Natural Language Processing (NLP) systems. The Discourse Representation ...
    • Integration of structural and semantic models for multimedia metadata management 

      Little, S.; Martinelli, M.; Salvetti, O.; Güdükbay, Uğur; Ulusoy, Özgür; De Chalendar, G.; Grefenstette, G. (IEEE, 2007-06)
      The management and exchange of multimedia data is challenging due to the variety of formats, standards and intended applications. In addition, production of multimedia data is rapidly increasing due to the availability of ...
    • İçerik tabanlı görüntü erişimi için sahne sınıflandırması 

      Çavuş, Özge; Aksoy, Selim (IEEE, 2008-04)
      Son yıllarda çok geniş veri tabanlarının kullanımıyla birlikte içerik tabanlı görüntü indekslemesi ve erişimi önemli bir araştırma konusu halini almıştır. Bu çalışmada, görüntü indekslemesi için sahne sınıflandırmasını baz ...
    • Keyframe labeling technique for surveillance event classification 

      Şaykol, E.; Baştan M.; Güdükbay U.; Ulusoy, Ö. (S P I E - International Society for Optical Engineering, 2010)
      The huge amount of video data generated by surveillance systems necessitates the use of automatic tools for their efficient analysis, indexing, and retrieval. Automated access to the semantic content of surveillance videos ...
    • Learning translation templates for closely related languages 

      Altıntaş, Kemal; Güvenir, H. Altay (Springer, Berlin, Heidelberg, 2003)
      Many researchers have worked on example-based machine translation and different techniques have been investigated in the area. In literature, a method of using translation templates learned from bilingual example pairs was ...
    • Matching ottoman words: an image retrieval approach to historical document indexing 

      Ataer, Esra; Duygulu, Pınar (ACM, 2007-07)
      Large archives of Ottoman documents are challenging to many historians all over the world. However, these archives remain inaccessible since manual transcription of such a huge volume is difficult. Automatic transcription ...
    • Measuring and improving interpretability of word embeddings using lexical resources 

      Şenel, Lütfi Kerem (Bilkent University, 2019-08)
      As an ubiquitous method in natural language processing, word embeddings are extensively employed to map semantic properties of words into a dense vector representations. They have become increasingly popular due to their ...
    • Metadata extraction from text in soccer domain 

      Göktürk, Z. O.; Çiçekli, N. K.; Çiçekli, İlyas (IEEE, 2008-10)
      Event detection is a crucial part for soccer video searching and querying. The event detection could be done by video content itself or from a structured or semi structured text files gathered from sports web sites. In ...
    • An MPEG-7 compatible video retrieval system with integrated support for complex multimodal queries 

      Baştan, Muhammet; Çam, Hayati; Güdükbay, Uğur; Ulusoy, Özgür (IEEE Computer Society, 2019)
      We present BilVideo-7, an MPEG-7 compatible, video indexing and retrieval system that supports complex multimodal queries in a unified framework. An MPEG-7 profile is developed to represent the videos by decomposing them ...
    • Nesne tanımada bağlam ve anlambilimsel sınıflandırmanın önemi: Bilgisayarla görme ve insanda görme alanlarındaki çalışmalar 

      Aksoy, Selim; Boyacı, Hüseyin; Gökçay, D. (IEEE, 2008-04)
      Sahne sınıflandırması ve nesne tanıma, bilgisayarla görme alanında fok uzun yıllardır üzerinde çalışılan temel problemlerdir. Bilgisayarlara kazandırılmaya çalışılan, sahnelerin ve içerdikleri nesnelerin otomatik olarak ...
    • An ontology-based approach to parsing Turkish sentences 

      Temizsoy, Murat; Çiçekli, ilyas (Springer, 1998-10)
      The main problem with natural language analysis is the ambiguity found in various levels of linguistic information. Syntactic analysis with word senses is frequently not enough to resolve all ambiguities found in a sentence. ...
    • Querying web metadata: Native score management and text support in databases 

      Özsoyoǧlu, G.; Altingövde, I. S.; Al-Hamdani, A.; Özel, S. A.; Ulusoy, Ö.; Özsoyoǧlu, Z. M. (Association for Computing Machinery, 2004)
      In this article, we discuss the issues involved in adding a native score management system to object-relational databases, to be used in querying Web metadata (that describes the semantic content of Web resources). The Web ...
    • River: an intermediate language for stream processing 

      Soulé R.; Hirzel M.; Gedik, B.; Grimm, R. (John Wiley & Sons Ltd., 2016)
      Summary This paper presents both a calculus for stream processing, named Brooklet, and its realization as an intermediate language, named River. Because River is based on Brooklet, it has a formal semantics that enables ...
    • A rule-based video database system architecture 

      Dönderler, M. E.; Ulusoy, Ö.; Güdükbay U. (Elsevier, 2002)
      We propose a novel architecture for a video database system incorporating both spatio-temporal and semantic (keyword, event/activity and category-based) query facilities. The originality of our approach stems from the fact ...
    • Safe data parallelism for general streaming 

      Schneider S.; Hirzel M.; Gedik, B.; Wu, Kun-Lung (Institute of Electrical and Electronics Engineers, 2015)
      Streaming applications process possibly infinite streams of data and often have both high throughput and low latency requirements. They are comprised of operator graphs that produce and consume data tuples. General streaming ...
    • Semantic argument frequency-based multi-document summarization 

      Aksoy, Cem; Buğdaycı, Ahmet; Gür, Tunay; Uysal, İbrahim; Can, Fazlı (IEEE, 2009-09)
      Semantic Role Labeling (SRL) aims to identify the constituents of a sentence, together with their roles with respect to the sentence predicates. In this paper, we introduce and assess the idea of using SRL on generic ...
    • Semantic scene classification for image annotation and retrieval 

      Çavuş, Özge; Aksoy, Selim (Springer, 2008-12)
      We describe an annotation and retrieval framework that uses a semantic image representation by contextual modeling of images using occurrence probabilities of concepts and objects. First, images are segmented into regions ...
    • Semantic similarity between Turkish and European languages using word embeddings 

      Şenel, Lütfü Kerem; Yücesoy, V.; Koç, A.; Çukur, Tolga (IEEE, 2017)
      Representation of words coming from vocabulary of a language as real vectors in a high dimensional space is called as word embeddings. Word embeddings are proven to be successful in modelling semantic relations between ...