“…Deep graph neural network (Yin et al , 2019), deep learning-based recommender system (Aujla et al , 2019), social attentive deep learning (Lei et al , 2020) and patient diet recommender system (Iwendi et al , 2020) were the key contributions in the field of RS. LSTM-based approaches (Zarzour et al , 2020), music recommender using deep learning (Fessahaye et al , 2019), autoencoder for top-N recommendations (Pan et al , 2019; Jiang et al , 2020; https://nijianmo.github.i; Zhu et al , 2017), reinforcement learning (Yuan et al , 2020), medical image segmentation using deep learning (Wang et al , 2020), topic-driven hybrid approach (Khan et al , 2020) and a deep learning approach with K pickup points (Berdeddouch et al , 2020) are important approaches found. Collaborative deep learning (Yang et al , 2020) and joint representation learning (Wu et al , 2017) are other approaches studied.…”