Yazar
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CLUSTERING IN EUROPEAN STOCK INDICES IN CRISIS AND NON-CRISIS PERIODS
Peker, S.; Aktan, B. (VILNIUS GEDIMINAS TECHNICAL UNIV PRESS, TECHNIKA, 2014)Grouping the major indices of stock markets based on their homogeneities may facilitate the selection period for investors especially today's information rich financial world. This paper attempts to detect and group the ... -
COMPARISON OF FUZZY NUMBERS USING LEFT/RIGHT SIDES OF LEVEL SETS
Peker, S.; Shikhlinskaya, R.; Nasibov, E. (MINISTRY COMMUNICATIONS & HIGH TECHNOLOGIES REPUBLIC AZERBAIJAN, 2020)Comparison is the most important operation in Decision Making (DM) problems. In case of crisp numbers there is not a problem, but comparison of Fuzzy Numbers (FN) involves many problems. This study handles a level set ... -
Decision Influence of the Marketing Department in the Organization: An Emerging Country Perspective
Gok, O.; Hacioglu, G.; Peker, S. (NOMOS VERLAGSGESELLSCHAFT MBH & CO KG, 2018)The role and influence of the function of marketing within the organization has been the focus of scholarly research and practitioners' attention in the business literature. Despite its central role and locus in business ... -
On the nearest parametric approximation of a fuzzy number
Nasibov, E.N.; Peker, S. (ELSEVIER SCIENCE BV, 2008)Many nearest parametric approximation methods of fuzzy sets are proposed in the literature. It is clear that the specific approximations may lead to the loss of information about fuzziness. To overcome this problem, most ... -
SUSTAINABLE RISK MANAGEMENT: FUZZY APPROACH TO VOLATILITY AND APPLICATION ON FTSE 100 INDEX
Peker, S.; Tvaronaviciene, M.; Aktan, B. (ENTERPRENEURSHIP & SUSTAINABILITY CENTER, 2014)In this paper, a fuzzy volatility labeling algorithm is offered to detect the periods with abnormal activities on daily share returns. Considering the vagueness in the switches of the time periods, the membership functions ... -
THE IMPACT OF MARKETING'S INNOVATION-RELATED CAPABILITIES ON A FIRM'S INNOVATION PERFORMANCE
Gok, O.; Peker, S. (WORLD SCIENTIFIC PUBL CO PTE LTD, 2020)Innovation performance is a potential source of competitive advantage for any firm. A capable marketing department (MD) can contribute significantly to the market success of the new products and services offered. Therefore, ... -
The marketing department's reputation in the firm
Gok, O.; Peker, S.; Hacioglu, G. (ELSEVIER SCI LTD, 2015)The role, effectiveness and credibility of the marketing function within a firm have been the focus of scholarly research and practitioners' attention in marketing, and both researchers and practitioners argue that the ... -
Time series labeling algorithms based on the K-nearest neighbors' frequencies
Nasibov, E.N.; Peker, S. (PERGAMON-ELSEVIER SCIENCE LTD, 2011)In the current paper, time series labeling task is analyzed and some solution algorithms are presented. In these algorithms, fuzzy c-means clustering, which is one of the unsupervised learning methods, is used to obtain ... -
Understanding the links among innovation performance, market performance and financial performance
Gok, O.; Peker, S. (SPRINGER HEIDELBERG, 2017)Innovation and its impacts on business performance are strategically vital deliberations for modern business organizations. In this study, we examine how innovation performance affects two different facets of firm performance: ...
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