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- Asil Oztekin, Alexander Nikov, Selim Zaim
- Journal of Systems and Software
- 2009

- Stefka Stoeva, Alexander Nikov
- Fuzzy Sets and Systems
- 2000

- Alexander Nikov, Stefka Stoeva
- Neural Networks
- 2001

A modification of the fuzzy backpropagation (FBP) algorithm called QuickFBP algorithm is proposed, where the computation of the net function is significantly quicker. It is proved that the FBP algorithm is of exponential time complexity, while the QuickFBP algorithm is of polynomial time complexity. Convergence conditions of the QuickFBP, resp. the FBP… (More)

- TRICIA RAMBHAROSE, ALEXANDER NIKOV
- 2010

The main Computational Intelligence (CI) models for personalization of interactive web systems are identified as Fuzzy Systems, Genetic Algorithms, Neural Networks, Artificial Immune Systems and Swarm Intelligence which includes Particle Swarm Optimization, Ant Colony Optimization, Bee Colony Optimization and Wasp Colony Optimization. These models are… (More)

- Alexander Nikov, Wolfgang Pohl
- HCI
- 1999

User-adapted interaction has been a research goal for many years now. In research on natural-language dialog systems, user models were introduced as explicit representation of assumptions about the individual characteristics of users. Systems would consult these models to decide how to adapt their behaviour to each user. Traditional user models contain… (More)

The adaptive interactive systems are still in the beginning of their practical use. There are many scientific prototypes but only few real-life applications using adaptive technology. A lot of Internet applications use profiling techniques but they are still parameter scheduling systems, which are not really adaptive. The adaptive interactive systems have… (More)

Emotion-oriented eCommerce is a new research field. Intelligent emotion recognition techniques based on modern mathematical models using computational intelligence are presented. Progression within this field of study is highlighted. The requirements for designing of intelligent emotion-oriented eCommerce systems are defined. A model for simulation of… (More)

A fuzzy neural network and its relevant fuzzy neuron and fuzzy learning algorithm are introduced. An object-oriented implementation of fuzzy neural network in MATLAB environment is realized. Simulations are carried out by SIMULINK. The performance of fuzzy neural network is experimentally compared with other neural networks trained by backpropagation… (More)

- TRICIA RAMBHAROSE, ALEXANDER NIKOV
- 2010

-The main computational intelligence methods (CI) for personalization of web-based systems are identified and critical reviewed: Fuzzy Systems, Genetic Algorithms, Neural Networks, Artificial Immune Systems and Swarm Intelligence which includes Particle Swarm Optimization, Ant Colony Optimization, Bee Colony Optimization and Wasp Colony Optimization. Each… (More)

- A Nikov, G Mikhaĭlov, I T Ivanov
- Veterinarno-meditsinski nauki
- 1983

Studied were a total of 480 high-producing cows to determine the signs of highest information value by which the animals could be divided into groups of normal ones and such of animals presenting various metabolic disturbances: osteomalacia, ketosis, and liver dystrophia. Used were as many as 25 qualitative signs as established through the anamnesis and the… (More)