مقایسهٔ روش‌ها

	شبکه عصبی پیچشی چندوجهی	شبکه عصبی بازگشتی چندوجهی
حوزه	یادگیری عمیق	یادگیری عمیق
خانواده	Machine learning	Machine learning
سال پیدایش	2011	2011–2015
پدیدآور	Ngiam, J. et al. / multiple groups	Multiple contributors; prominently Ngiam et al. (2011) and Vinyals et al. (2015)
نوع	Multimodal deep learning model	Multimodal sequence model (recurrent)
منبع بنیادین	Ngiam, J., Khosla, A., Kim, M., Nam, J., Lee, H., & Ng, A. Y. (2011). Multimodal deep learning. In Proceedings of the 28th International Conference on Machine Learning (ICML), 689–696.	Vinyals, O., Toshev, A., Bengio, S., & Erhan, D. (2015). Show and Tell: A Neural Image Caption Generator. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pp. 3156–3164.
نام‌های دیگر	MM-CNN, multimodal CNN, multi-input CNN, cross-modal convolutional network	MM-RNN, multimodal sequence model, cross-modal RNN, multimodal recurrent encoder-decoder
مرتبط	5	6
خلاصه	A Multimodal Convolutional Neural Network (MM-CNN) processes and fuses two or more input modalities — such as images and text, or video and audio — through dedicated convolutional branches, learning a shared representation that captures complementary signals from each source. The fused representation drives a downstream task such as classification, regression, or retrieval.	A Multimodal Recurrent Neural Network combines inputs from two or more data modalities — such as images, text, and audio — within a recurrent sequence-processing framework. It encodes each modality separately, fuses the representations, and then processes the combined signal through recurrent units (RNN, LSTM, or GRU) to generate or classify sequential outputs. This design made it a foundational approach in image captioning, video description, and audio-visual speech recognition.