Dong Liu Yong Wang 0009 Chenhong Luo Jun Ma 0003 An improved autoencoder for recommendation to alleviate the vanishing gradient problem. 110254 2023 March 263 Knowl. Based Syst. https://doi.org/10.1016/j.knosys.2023.110254 db/journals/kbs/kbs263.html#LiuWLM23