شبکه عصبی کانولوشن

Calculation of variograms and spatial continuity is one of the first and most important processes in geostatistical modeling, which is a long and experience-oriented process. Due to the complexities of calculating experimental variograms, interpretation and fitting the appropriate model are always the main challenges in this field. This article presents an intelligent variogram modeling method using deep learning that can increase the speed of variogram modeling and also prevent common errors in manual variogram model fitting. In this method, two convolutional neural networks are used. The first CNN network converts the initial data into a 2D simulated map based on various variogram models. For this purpose, it is necessary to train the first network with initial data and their corresponding simulations. The output of this model is entered into the second convolutional neural network as input, and the variogram parameters (including range, azimuth, ratio, and nugget effect) are predicted. In this article, the proposed algorithm is implemented on synthetic 2D data and the parameters of the CNN models are optimized. The accuracy of the proposed model was 97 %, and then the proposed algorithm was used for variogram modeling of Nouchon area geochemical data, which included the elements Cu, Zn, and Pb. the accuracy of the obtained model compared to manual fitting was 90%.

This study uses data modeling and text mining techniques for oil price predictions. To improve the model's explanatory capability, text features from internet news articles on crude oil are automatically extracted using convolutional neural networks. Additionally, various time series models employ a state analysis approach called convolution. The years 2021 to 2011 saw the collection of almost 13000 news items, and it was discovered that text mining and data from large Internet-based apps perform better for prediction than other approaches. This means that it is pretty fair to say that there is a parallel link between news headlines, those headlines, and searches in the Google search engine. This relationship is highly appropriate for correctly forecasting the price of crude oil.