Yazar "0000-0001-5838-4615" için listeleme
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Design and analysis of classifier learning experiments in bioinformatics: survey and case studies
İrsoy, Ozan; Yıldız, Olcay Taner; Alpaydın, Ahmet İbrahim Ethem (IEEE Computer Soc, 2012-12)In many bioinformatics applications, it is important to assess and compare the performances of algorithms trained from data, to be able to draw conclusions unaffected by chance and are therefore significant. Both the design ... -
Doǧrudan pazarlama amaçlı hedef kitle analizi
Kegeci, Sinan; Özbek, Eyüp Erkan; Türkel, Mustafa Sertaç; Düzağaç, Remzi; Yıldız, Olcay Taner (Institute of Electrical and Electronics Engineers Inc., 2018-07-05)Doğrudan pazarlama, uygun ürünleri uygun kişilerle en kısa yoldan buluşturma sürecidir. Son yılların en popüler pazarlama yaklaşımlarından birisidir. Bu çalışmada turizm sektörüne ait isimsizleştirilmiş bir veri tabanını ... -
Eigenclassifiers for combining correlated classifiers
Ulaş, Aydın; Yıldız, Olcay Taner; Alpaydın, Ahmet İbrahim Ethem (Elsevier Science Inc, 2012-03-15)In practice, classifiers in an ensemble are not independent. This paper is the continuation of our previous work on ensemble subset selection [A. Ulas, M. Semerci, O.T. Yildiz, E. Alpaydin, Incremental construction of ... -
Emlak alanına özgü kelime ağı
Parlar, Selen; Nas Arıcan, Bilge; Erkek, Mehmet; Çayırlı, Kamil; Yıldız, Olcay Taner (Institute of Electrical and Electronics Engineers Inc., 2019-04)Kelime ağı, anlamlarına göre organize edilmiş kelimeleri barındıran bir veritabanıdır. Bir kelime ağı, sahip olduğu kelimelerin anlamlarını, bilişsel eş anlamlılarını, türlerini, diğer anlamlar ile arasındaki ilişkilerini ... -
English-Turkish parallel semantic annotation of Penn-Treebank
Arıcan, Bilge Nas; Bakay, Özge; Avar, Begüm; Yıldız, Olcay Taner; Ergelen, Özlem (Oficyna Wydawnicza Politechniki Wroclawskiej, 2020)This paper reports our efforts in constructing a sense-labeled English-Turkish parallel corpus using the traditional method of manual tagging. We tagged a pre-built parallel treebank which was translated from the Penn ... -
English-Turkish parallel treebank with morphological annotations and its use in tree-based SMT
Görgün, Onur; Yıldız, Olcay Taner; Solak, Ercan; Ehsani, Razieh (SciTePress, 2016)In this paper, we report our tree based statistical translation study from English to Turkish. We describe our data generation process and report the initial results of tree-based translation under a simple model. For ... -
Feature extraction from discrete attributes
Yıldız, Olcay Taner (IEEE, 2010)In many pattern recognition applications, first decision trees are used due to their simplicity and easily interpretable nature. In this paper, we extract new features by combining k discrete attributes, where for each ... -
A hybrid approach to dynamic enterprise data platform
Sezgin, Mehmet Selman; Bayrak, Ahmet Tuğrul; Yıldız, Olcay Taner (Institute of Electrical and Electronics Engineers Inc., 2019-12-12)Today, corporations aim to make maximum use of the data produced in business applications. One of the most important goals is to convert the data to the commercial benefit in the fastest way. For this purpose, it is critical ... -
Incremental construction of classifier and discriminant ensembles
Ulaş, Aydın; Semerci, Murat; Yıldız, Olcay Taner; Alpaydın, Ahmet İbrahim Ethem (Elsevier Science Inc, 2009-04-15)We discuss approaches to incrementally construct an ensemble. The first constructs an ensemble of classifiers choosing a subset from a larger set, and the second constructs an ensemble of discriminants, where a classifier ... -
Incremental construction of rule ensembles using classifiers produced by different class orderings
Yıldız, Olcay Taner; Ulaş, Aydın (IEEE, 2016)In this paper, we discuss a novel approach to incrementally construct a rule ensemble. The approach constructs an ensemble from a dynamically generated set of rule classifiers. Each classifier in this set is trained by ... -
An incremental model selection algorithm based on cross-validation for finding the architecture of a Hidden Markov model on hand gesture data sets
Ulaş, Aydın; Yıldız, Olcay Taner (IEEE, 2009-12-13)In a multi-parameter learning problem, besides choosing the architecture of the learner, there is the problem of finding the optimal parameters to get maximum performance. When the number of parameters to be tuned increases, ... -
Integrating Turkish Wordnet KeNet to Princeton WordNet: The case of one-to-many correspondences
Bakay, Özge; Ergelen, Özlem; Yıldız, Olcay Taner (Institute of Electrical and Electronics Engineers Inc., 2019-10)In this paper, we introduce a novel approach of forming interlingual relations between multilingual wordnets. We have mapped Turkish senses in KeNet with their corresponding senses in Princeton WordNet by drawing one-To-many ... -
İlişkisel veri tabanlarında mükerrer kayıtların makine öǧrenmesiyle tespiti
Bayrak, Ahmet Tuğrul; Yılmaz, Aykut İnan; Yılmaz, Kemal Burak; Düzağaç, Remzi; Yıldız, Olcay Taner (Institute of Electrical and Electronics Engineers Inc., 2018-07-05)Veri miktarının artışına paralel olarak, ilişkisel veri tabanlarında mükerrer kayıtlar da artmaktadır. Artan bu kayıtlar kullanıldıkları rapor veya analizlerde tutarsızlığa sebep olabilmektedir. Bu sorunu en aza indirgemek ... -
İngi̇li̇zce-Türkçe i̇stati̇sti̇ksel maki̇ne çevi̇ri̇si̇nde bi̇çi̇m bi̇li̇m kullanımı
Görgün, Onur; Yıldız, Olcay Taner (IEEE, 2012-04-18)Bu çalışmada, İngilizce-Türkçe dil ikilisi için biçimbilimsel çözümleme yardımı ile SIU dermecesi üzerinde istatistiksel makine çevirisi denemeleri yapılmıştır. Kelime biçimlerinin baz alındığı çeviri denemeleri İngilizce-Türkçe ... -
Machine learning
Yıldız, Olcay Taner (Institution of Engineering and Technology, 2020-01-01)[No abstract available] -
Mapping classifiers and datasets
Yıldız, Olcay Taner (Pergamon-Elsevier Science Ltd, 2011-04)Given the posterior probability estimates of 14 classifiers on 38 datasets, we plot two-dimensional maps of classifiers and datasets using principal component analysis (PCA) and Isomap. The similarity between classifiers ... -
Model selection in omnivariate decision trees using Structural Risk Minimization
Yıldız, Olcay Taner (Elsevier Science Inc, 2011-12-01)As opposed to trees that use a single type of decision node, an omnivariate decision tree contains nodes of different types. We propose to use Structural Risk Minimization (SRM) to choose between node types in omnivariate ... -
A multilayer annotated corpus for Turkish
Yıldız, Olcay Taner; Ak, Koray; Ercan, Gökhan; Topsakal, Ozan; Asmazoğlu, Cengiz (IEEE, 2018-06-06)In this paper, we present the first multilayer annotated corpus for Turkish, which is a low-resourced agglutinative language. Our dataset consists of 9,600 sentences translated from the Penn Treebank Corpus. Annotated ... -
Multivariate statistical tests for comparing classification algorithms
Yıldız, Olcay Taner; Aslan, Özlem; Alpaydın, Ahmet İbrahim Ethem (Springer, Berlin, Heidelberg, 2011)The misclassification error which is usually used in tests to compare classification algorithms, does not make a distinction between the sources of error, namely, false positives and false negatives. Instead of summing ... -
Müşterilerin GSP analizi kullanarak kümelenmesi
Pakyürek, Muhammet; Sezgin, Mehmet Selman; Kestepe, Sedat; Bora, Büşra; Düzağaç, Remzi; Yıldız, Olcay Taner (Institute of Electrical and Electronics Engineers Inc., 2018-07-05)Bu çalışma ile mevcut misafir ve rezervasyon verisi kullanılarak doğal öbeklenmeleri tespit ederek misafir davranışları tespit ettik. Ayrıca verilen hizmetleri ve satış stratejilerini bu davranışlara göre özelleştirdik. ...