Search

Your search keyword '"GJORGJEVIKJ, DEJAN"' showing total 111 results
Start Over Author "GJORGJEVIKJ, DEJAN"
111 results on '"GJORGJEVIKJ, DEJAN"'

1. Addressing Item-Cold Start Problem in Recommendation Systems using Model Based Approach and Deep Learning

Author

Obadić, Ivica, Madjarov, Gjorgji, Dimitrovski, Ivica, and Gjorgjevikj, Dejan

Subjects
Computer Science - Information Retrieval, Computer Science - Learning, Statistics - Machine Learning
Abstract

Traditional recommendation systems rely on past usage data in order to generate new recommendations. Those approaches fail to generate sensible recommendations for new users and items into the system due to missing information about their past interactions. In this paper, we propose a solution for successfully addressing item-cold start problem which uses model-based approach and recent advances in deep learning. In particular, we use latent factor model for recommendation, and predict the latent factors from item's descriptions using convolutional neural network when they cannot be obtained from usage data. Latent factors obtained by applying matrix factorization to the available usage data are used as ground truth to train the convolutional neural network. To create latent factor representations for the new items, the convolutional neural network uses their textual description. The results from the experiments reveal that the proposed approach significantly outperforms several baseline estimators.

Published
2017

3. Sarcasm and Irony Detection in English Tweets

Author

Dimovska, Jona, Angelovska, Marina, Gjorgjevikj, Dejan, Madjarov, Gjorgji, Barbosa, Simone Diniz Junqueira, Series Editor, Filipe, Joaquim, Series Editor, Kotenko, Igor, Series Editor, Sivalingam, Krishna M., Series Editor, Washio, Takashi, Series Editor, Yuan, Junsong, Series Editor, Zhou, Lizhu, Series Editor, Kalajdziski, Slobodan, editor, and Ackovska, Nevena, editor

Published
2018
Full Text
View/download PDF

5. Generic Face Detection and Pose Estimation Algorithm Suitable for the Face De-identification Problem

Author

Milchevski, Aleksandar, Petrovska-Delacrétaz, Dijana, Gjorgjevikj, Dejan, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Loshkovska, Suzana, editor, and Koceski, Saso, editor

Published
2016
Full Text
View/download PDF

6. Machine Learning Approach to Blocking Effect Reduction in Low Bitrate Video

Author

Stojkovikj, Ana, Gjorgjevikj, Dejan, Ivanovski, Zoran, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Loshkovska, Suzana, editor, and Koceski, Saso, editor

Published
2016
Full Text
View/download PDF

9. Hybrid Decision Tree Architecture Utilizing Local SVMs for Multi-Label Classification

Author

Madjarov, Gjorgji, Gjorgjevikj, Dejan, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Corchado, Emilio, editor, Snášel, Václav, editor, Abraham, Ajith, editor, Woźniak, Michał, editor, Graña, Manuel, editor, and Cho, Sung-Bae, editor

Published
2012
Full Text
View/download PDF

11. Dual Layer Voting Method for Efficient Multi-label Classification

Author

Madjarov, Gjorgji, Gjorgjevikj, Dejan, Džeroski, Sašo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Vitrià, Jordi, editor, Sanches, João Miguel, editor, and Hernández, Mario, editor

Published
2011
Full Text
View/download PDF

12. Efficient Two Stage Voting Architecture for Pairwise Multi-label Classification

Author

Madjarov, Gjorgji, Gjorgjevikj, Dejan, Delev, Tomche, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, and Li, Jiuyong, editor

Published
2011
Full Text
View/download PDF

13. Evaluation of Distance Measures for Multi-class Classification in Binary SVM Decision Tree

Author

Madzarov, Gjorgji, Gjorgjevikj, Dejan, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Rutkowski, Leszek, editor, Scherer, Rafał, editor, Tadeusiewicz, Ryszard, editor, Zadeh, Lotfi A., editor, and Zurada, Jacek M., editor

Published
2010
Full Text
View/download PDF

26. Conference on Control Engineering and Artificial Intelligence (CCEAI'17)

Author

Grégoire, Éric, Gjorgjevikj, Dejan, Tsoi, Ah Chung, Ye, Yong, Centre de Recherche en Informatique de Lens (CRIL), and Université d'Artois (UA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI]
Abstract

International audience; no abstract

Published
2017

32. ICT Innovations 2014 : World of Data / edited by Ana Madevska Bogdanova, Dejan Gjorgjevikj.

Author

Bogdanova, Ana Madevska. editor., Gjorgjevikj, Dejan. editor., SpringerLink (Online service), Bogdanova, Ana Madevska. editor., Gjorgjevikj, Dejan. editor., and SpringerLink (Online service)

Abstract

Data is a common ground, a starting point for each ICT system. Data needs processing, use of different technologies and state-of-the-art methods in order to obtain new knowledge, to develop new useful applications that not only ease, but also increase the quality of life. These applications use the exploration of Big Data, High throughput data, Data Warehouse, Data Mining, Bioinformatics, Robotics, with data coming from social media, sensors, scientific applications, surveillance, video and image archives, internet texts and documents, internet search indexing, medical records, business transactions, web logs, etc. Information and communication technologies have become the asset in everyday life enabling increased level of communication, processing and information exchange. This book offers a collection of selected papers presented at the Sixth International Conference on ICT Innovations held in September 2014, in Ohrid, Macedonia, with main topic World of data. The conference gathered academics, professionals and practitioners in developing solutions and systems in the industrial and business arena, especially innovative commercial implementations, novel applications of technology, and experience in applying recent ICT research advances to practical solutions.

Published
2015

45. A Multi-class SVM Classifier Utilizing Binary Decision Tree.

Author

Madzarov, Gjorgji, Gjorgjevikj, Dejan, and Chorbev, Ivan

Subjects
SUPPORT vector machines, KERNEL functions, DECISION trees, CLUSTER analysis (Statistics), MATHEMATICAL models
Abstract

In this paper a novel architecture of Support Vector Machine classifiers utilizing binary decision tree (SVM-BDT) for solving multiclass problems is presented. The hierarchy of binary decision subtasks using SVMs is designed with a clustering algorithm. For consistency between the clustering model and SVM, the clustering model utilizes distance measures at the kernel space, rather than at the input space. The proposed SVM based Binary Decision Tree architecture takes advantage of both the efficient computation of the decision tree architecture and the high classification accuracy of SVMs. The SVMBDT architecture was designed to provide superior multi-class classification performance. Its performance was measured on samples from MNIST, Pendigit, Optdigit and Statlog databases of handwritten digits and letters. The results of the experiments indicate that while maintaining comparable or offering better accuracy with other SVM based approaches, ensembles of trees (Bagging and Random Forest) and neural network, the training phase of SVM-BDT is faster. During recognition phase, due to its logarithmic complexity, SVM-BDT is much faster than the widely used multi-class SVM methods like "one-against-one" and "one-against-all", for multiclass problems. Furthermore, the experiments showed that the proposed method becomes more favourable as the number of classes in the recognition problem increases. [ABSTRACT FROM AUTHOR]

Published
2009

Catalog

Books, media, physical & digital resources
See catalog results