جستجوی مقالات مرتبط با کلیدواژه « یادگیری ژرف » در نشریات گروه « فناوری اطلاعات »

Due to the significant growth of textual information and data generated by humans on social networks, there is a need for systems that can automatically analyze the data and extract valuable information from them. One of the most important textual data is people's opinions about a particular topic that are expressed in the form of text. Text published by users on social networks can represent their personality. Although machine learning based methods can be considered as a good choice for analyzing these data, there is also a remarkable need for deep learning based methods to overcome the complexity and dispersion of content and syntax of textual data during the training process. In this regard, the purpose of this paper is to employ deep learning based methods for personality recognition. Accordingly, the convolutional neural network is combined with the Adaboost algorithm to consider the possibility of using the contribution of various filter lengths and gasp their potential in the final classification via combining various classifiers with respective filter sizes using AdaBoost. The proposed model was conducted on Essays and YouTube datasets. Based on the empirical results, the proposed model presented superior performance compared to other existing models on both datasets.

Dominant and rare events detection is one of the most important subjects of image and video analysis field. Due to inaccessibility to all rare events, detecting of them is a challenging task. Today, deep networks are the best tool for video modeling but due to inaccessibility to tagged data of rare data, usual learning of a deep convolutional network is not possible. Due to the success of generative adversarial networks, in this paper an end-to-end deep network based on generative adversarial networks is presented for detecting rare events. This network is competitively trained only by dominant events. To evaluate performance of proposed method, two standard datasets: UCSDped1 and UCSDped2 are utilized. The proposed method can detect rare event with 0.2 and 0.17 equal error rate with the processing speed of 300 frames per second on the mentioned data respectively. In addition to end-to-end structure of the network and its simple train and test phase, this result is comparable to advanced methods results.

In this paper, a method based on deep learning is presented to highlight and recognize the Iranian license plate numbers. The current research uses the convolutional neural network with the encoder-decoder structure to enhance the image and highlight the plate image numbers instead of using traditional image enhancement techniques. The proposed network can highlight vehicle license plate numbers by learning the plate images in various conditions. After that, the plate numbers are recognized from the reproduced image using a recurrent neural network without the need to plate image segmentation. This method can reduce the error caused by the license plate number segmentation. The proposed method reached the final recognition rate up to 94٫19 percent on a database with 4000 test images for recognizing the license plates which is acceptable in comparison to three recent methods.