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    Hybrid multi-document summarization using pre-trained language models

    , Article Expert Systems with Applications ; Volume 192 , 2022 ; 09574174 (ISSN) Ghadimi, A ; Beigy, H ; Sharif University of Technology
    Elsevier Ltd  2022
    Abstract
    Abstractive multi-document summarization is a type of automatic text summarization. It obtains information from multiple documents and generates a human-like summary from them. In this paper, we propose an abstractive multi-document summarization method called HMSumm. The proposed method is a combination of extractive and abstractive summarization approaches. First, it constructs an extractive summary from multiple input documents, and then uses it to generate the abstractive summary. Redundant information, which is a global problem in multi-document summarization, is managed in the first step. Specifically, the determinantal point process (DPP) is used to deal with redundancy. This step... 

    MDL-CW: A multimodal deep learning framework with cross weights

    , Article 2016 IEEE Conference on Computer Vision and Pattern Recognition, 26 June 2016 through 1 July 2016 ; Volume 2016-January , 2016 , Pages 2601-2609 ; 10636919 (ISSN) ; 9781467388511 (ISBN) Rastegar, S ; Soleymani Baghshah, M ; Rabiee, H. R ; Shojaee, S. M ; Sharif University of Technology
    IEEE Computer Society 
    Abstract
    Deep learning has received much attention as of the most powerful approaches for multimodal representation learning in recent years. An ideal model for multimodal data can reason about missing modalities using the available ones, and usually provides more information when multiple modalities are being considered. All the previous deep models contain separate modality-specific networks and find a shared representation on top of those networks. Therefore, they only consider high level interactions between modalities to find a joint representation for them. In this paper, we propose a multimodal deep learning framework (MDLCW) that exploits the cross weights between representation of... 

    Multi-modal deep distance metric learning

    , Article Intelligent Data Analysis ; Volume 21, Issue 6 , 2017 , Pages 1351-1369 ; 1088467X (ISSN) Roostaiyan, S. M ; Imani, E ; Soleymani Baghshah, M ; Sharif University of Technology
    IOS Press  2017
    Abstract
    In many real-world applications, data contain heterogeneous input modalities (e.g., web pages include images, text, etc.). Moreover, data such as images are usually described using different views (i.e. different sets of features). Learning a distance metric or similarity measure that originates from all input modalities or views is essential for many tasks such as content-based retrieval ones. In these cases, similar and dissimilar pairs of data can be used to find a better representation of data in which similarity and dissimilarity constraints are better satisfied. In this paper, we incorporate supervision in the form of pairwise similarity and/or dissimilarity constraints into... 

    Vibration-based Structural Damage State Identification by Image-based Two-dimentional Convolutional Neural Network

    , M.Sc. Thesis Sharif University of Technology Daeizadeh, Mohammad javad (Author) ; Mohtasham Dolatshahi, Keyarash (Supervisor)
    Abstract
    This paper proposes a novel image-based two-dimensional convolutional neural network for identifying damage level of the structures after an earthquake. The acceleration of the structure is the input data that is converted into an image, and the corresponding damage level is the output of the network. The superiority of the proposed method in comparison to the signal-based one-dimensional convolutional neural network method is the incorporation of the high and low frequency of the input data into the kernel of the convolution. Rows of the input image show short period high frequency of the signal and the column represent long duration and low frequency of the response time history...