Utku Can Aytaç, Tayfun Kucukyilmaz, Göneç Seçil Tarakcioğlu
{"title":"Comparison of Time Series Models for Predicting Online Gaming Company Revenue","authors":"Utku Can Aytaç, Tayfun Kucukyilmaz, Göneç Seçil Tarakcioğlu","doi":"10.52693/jsas.1195048","DOIUrl":"https://doi.org/10.52693/jsas.1195048","url":null,"abstract":"Online gaming industry is an area where the effects of any change can be seen in a very short time. Therefore, real-time analysis of revenues, analysis of the commercial performance of the developed content, and rapid monitoring of the revenue contributions of the improvements are essential. Therefore, financial forecasting is a crucial part of business plan which can help strategize how much and how quickly the company intend to grow. In financial forecasting of a given time series, revenue estimations for future will become important research in the industry. This research offers a detailed analysis of recent time series models and focused on both deep learning and statistical methods for time series forecasting on real-world revenue data. Results of the study are examined using one of the leading Finland based online gaming companies’ revenue data. In our experiments, we investigated various time series forecast techniques, such as SARIMA, Theta, Holt Winters, Prophet, Dense Neural Network (DNN), Convolutional Neural Network (CNN), Long Short-Term Memory (LSTM), N-Beats and Ensemble models. The experimental evaluations illustrate that deep learning models can optimize the financial forecast operations. The result of the study provides insights to managers and analysts in determining the best model to adopt.","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114413479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kemal Gökhan Nalbant, Şahika Özdemi̇r, Yavuz Özdemir
{"title":"IT2 Bulanık ANP Metodolojisi Kullanılarak Beton Tesis Yeri Seçimi","authors":"Kemal Gökhan Nalbant, Şahika Özdemi̇r, Yavuz Özdemir","doi":"10.52693/jsas.1091307","DOIUrl":"https://doi.org/10.52693/jsas.1091307","url":null,"abstract":"The use of Ready-Mixed Concrete started to be used after the 1970s and its importance has gradually increased in recent years. The rapid development of the construction industry in our country in recent years has contributed to the rapid development of Ready-Mixed Concrete plants. Because of this reason, in this study the concrete plant's location is tried to be determined using the Interval Type-2 Fuzzy Analytic Network (IT2 FANP) methodology. As a result of this methodology, the ranking of the alternative concrete plant's location is found as Basaksehir, Ikitelli, and Bagcilar, respectively. To the authors’ knowledge, this is the first study in the literature that searches an alternative concrete batching plant location using Interval Type-2 (IT2) Fuzzy Multi-Criteria Decision Making (MCDM) techniques. The advantage of this study is that it enriches this aspect, which is seen as missing in the literature, and is a pioneer in the studies to be done in this field.","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126481282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structural Equation Modeling as a Marketing Research Tool: A Guideline for SEM Users About Critical Issues and Problematic Practices","authors":"Umut Ünal","doi":"10.52693/jsas.1015831","DOIUrl":"https://doi.org/10.52693/jsas.1015831","url":null,"abstract":"","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122121291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Statistical Comparison of Parallel-Line Symmetrical Microbiological Models: Analysis of Agar Diffusion Assay in 8 x 8 Large Rectangular Plates","authors":"M. Eissa","doi":"10.52693/jsas.989584","DOIUrl":"https://doi.org/10.52693/jsas.989584","url":null,"abstract":"","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128326958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Visualizations and Compositional Data Analysis for the European Time Use","authors":"Cenk İçöz","doi":"10.52693/jsas.994860","DOIUrl":"https://doi.org/10.52693/jsas.994860","url":null,"abstract":"","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"341 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115171394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A New Kumaraswamy Class of Generalized Distributions with Applications to Exponential Model.","authors":"M. Ahmed","doi":"10.52693/jsas.979832","DOIUrl":"https://doi.org/10.52693/jsas.979832","url":null,"abstract":"","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131480751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Doğrusal Fiziki Programlama Yaklaşımı ile Kapalı Döngü Tedarik Zinciri Optimizasyonu","authors":"Gamze Öztürk, Hasan Kıvanç Aksoy","doi":"10.52693/jsas.947564","DOIUrl":"https://doi.org/10.52693/jsas.947564","url":null,"abstract":"","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117093515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of Design of Experiment Optimization to Obtain High-Quality Sugar","authors":"Yasemin AYAZ ATALAN, Abdulkadir Atalan","doi":"10.52693/jsas.908537","DOIUrl":"https://doi.org/10.52693/jsas.908537","url":null,"abstract":"This study aimed to use the design of experiment technique to calculate the optimum values of dependent and independent variables considered in the production of quality sugar. This study consists of two stages. Firstly, four different independent variables and one dependent variable data were used for this study. The levels and limits of independent factors were determined as a result of descriptive statistical analysis. They were considered the experiment as a two-level system; a full-factorial design of experiment, including 24 experiments with three replications, was made. Statistical analysis was performed using the data obtained, and it was determined whether the independent variables had an effect on the dependent variable. In the second stage of the study, the optimization model developed in order to obtain optimum results for both dependent and independent variables was run. According to the optimum data obtained in the optimization model, the quality-sugar score was calculated as 13.5821 according to 95% confidence and prediction interval, while the color of sugar was determined to be brown.","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132121156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Makro İktisadi Göstergelerin Ekonomik Güven Üzerindeki Etkilerinin Analizi: Türkiye Örneği","authors":"İbrahim Ayteki̇n, Şeyma Bozkaya","doi":"10.52693/jsas.932931","DOIUrl":"https://doi.org/10.52693/jsas.932931","url":null,"abstract":"ülkenin ekonomisinde Ekonomisinde ekonomik Abstract: The feeling of trust, which takes place in almost every stage of human life, has become an important concept for the economies of the country. The trust of local and foreign people or investors in the economic structure of a country means that things are going well in that country's economy. It is accepted that all countries that have established confidence in their economy will become more suitable for growth, investments and development. In this study, it is aimed to analyze the effects of macroeconomic indicators, which constitute the important economic dynamics of Turkey, on economic confidence. In the analysis, Turkey's monthly data between the years 2008: M1-2019: M12 were used. In the first stage of the analysis, unit root tests were applied to the variables and the stationarity levels of the variables were determined. Then, it was decided to use the ARDL model in line with the determined stationarity levels, and thus the ARDL boundary test was applied to the variables. As a result of the ARDL boundary test applied, it was determined that there is a long-term cointegration relationship between the variables. At the last stage of the analysis, the short and long term coefficients of the estimated ARDL model were calculated. As a result, while there is a negative relationship between the inflation, export and unemployment and economic confidence in the long term in Turkey; A positive relationship was found between industrial production, real exchange rate , import and economic confidence. This result shows that macroeconomic variables in Turkey have positive and negative effects on economic confidence in the long run. Therefore, what is necessary for Turkey to overcome some macroeconomic problems is to achieve stability in economic growth by establishing confidence in the economy.","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127990396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bayesçi ANOVA(BANOVA): Ankara’da Hava Kirliliği Üzerine Bir Uygulama","authors":"Serpil Aktaş Altunay","doi":"10.52693/jsas.940764","DOIUrl":"https://doi.org/10.52693/jsas.940764","url":null,"abstract":"","PeriodicalId":332708,"journal":{"name":"İstatistik ve Uygulamalı Bilimler Dergisi","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122716950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}