For the design and sizing of equipment and structures in agricultural operations concerning the cherry tomato industry, especially harvesting operations and postharvest operations of the crops, it is very important to determine their mechanical properties. In the study, mass, length, thickness, width, geometric diameter, sphericity, surface area, rupture force, firmness, Poisson’s ratio, and modulus of elasticity were used as independent variables in the data set, and the dependent variable and deformation energy was estimated. Min–max normalization methods were used to increase the success and performance of the models. Three machine learning methods were utilized in the study, and statistical parameters, such as R2, MAE, and MSE, were used to evaluate the performance of the methods. The R2 of the artificial neural network (ANN), applied in the model as one of the machine learning methods, was found to be 96.8%, revealing the highest predictive power. Logistic regression with a 91.1% success rate, and decision tree regression with an 81.3% success rate, came second and third, respectively.
Road lighting needs to be measured at regular time intervals. In this way, new road lighting projects can be controlled in compliance with the specifications, and existing road lighting luminaires that are damaged or of reduced efficiency can be identified and replaced. Today, lighting measurements are mostly made by using hardware tools that make point measurements. The use of this method requires expert staff, money and time. In this pilot study, artificial intelligence and web-based software were developed to make road lighting measurements using photographs of roads. For this purpose, reference points have been determined on the road. The correlation between luminance values and pixel values of these points was established using artificial intelligence techniques. Artificial neural networks, fuzzy logic and adaptive neuro fuzzy inference system methods are used to establish the correlation. With this software, the difficulties encountered when using the conventional measurement method are reduced; road lighting measurements can be done in a short time, cost-free and online.
Özet-Bu çalışmada Türkiye'de faaliyet gösteren ve atak portföy yapısı ile tanımlanan 12 bireysel emeklilik fonunun Aralık 2005-Ocak 2020 dönemi arasında aylık olarak net varlık değerleri (NAV) çok katmanlı algılayıcı (ÇKA) ve çoklu doğrusal regresyon yöntemleriyle tahmin edilmeye çalışılmıştır. Bunun için 12 bağımsız değişken ve bir bağımlı değişkenden oluşan modeller oluşturulmuş; elde edilen sonuçların başarı oranları ve hata değerleri karşılaştırılmıştır. ÇKA yönteminde giriş katmanında 12 düğüm, 2 gizli katman ve her gizli katmanda 5 düğüm ve çıkış katmanında bir düğüm olan bir ağ modeli tasarlanmıştır. Tasarlanan bu ağ modelinde gizli katma sayısı ve her gizli katmandaki nöron sayısı aynıdır. Çoklu doğrusal regresyon modelinde 12 bağımsız değişken ile bir bağımlı değişken arasındaki bağıntıyı ortaya koymak ve tahminde bulunmak için her bir bireysel emeklilik yatırım fonunun net varlık değeri için bir model oluşturulmuştur. ÇKA ağının başarı oranı %77,
In parallel with the advances in technology, digital journalism is preferred more than printed journalism day by day. Due to the fast and up-to-date sense of journalism provided by digital journalism and its ubiquitous accessibility features, it is read more by users. In addition to these advantages provided by digital journalism, it also has some difficulties compared to printed journalism. The stage of preparation and delivery of the news to the user requires more technological knowledge and equipment compared to printed journalism. The processes of title selection, text creation, photo selection and determination of the appropriate news category in the preparation phase of the news are designed to be both faster and user-friendly compared to printed publishing. The news created to be presented to the target audience may belong to one or more of different categories such as economy, politics, sports, technology, and health. The inclusion of the news in the appropriate category provides convenience in terms of reaching the right audience and archiving the news correctly. In this study, news texts were classified according to their categories based on the machine learning methods. In the study, news of five newspapers in three different categories were used. Bayesian classifier and decision tree methods were used to classify the news in the dataset including a total of 10.500 news. In the results of the study, it was observed that the Bayesian classifier classified the news more successfully according to their categories.
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