maximum inner product search grouplens random forests validation set twitter attention mechanism last.fm brightkite equal opportunity recall manifold dunnhumby autoregression neural factorization machines houzz precision recall curve maximum likelihood estimation amazon pagerank underfit adam optimizer bilinear autoregressive pointwise predictors pairwise predictors self-attention surprise herding sensitivity bipartite matching problem interpretability regressor netflix gensim pseudoinverse $p$-value mixture of experts price elasticity conversational recommender systems line of best fit multi-hot bag-of-words trust explicit feedback netflix prize cosine similarity recall value unfairness cross-elasticity crowd-sourcing encoder-decoder word2vec tensorflow hits adwords librarything overfit behance term frequency cinematch tsv random walk personalized health classifier gini coefficient group recommendation fashionable sklearn spmc / socially-aware personalized markov chains long-tail those topics that are capable of explaining the variation in ratings youtube sse / sum of squared errors eachmovie jaccard similarity faiss least misery $r^2$ coefficient recurrent neural networks n-gram semi-supervised learning aggregate diversity collaborative filtering singular value decomposition vbpr / visual bayesian personalized ranking clothing google regularized supervised learning matrix factorization hit rate reciprocal communication location-based social networks latent factor models foursquare endomondo youtube model-based autoencoder yahoo microsoft likelihood function extractive ciao absolute unfairness regularization mrr / mean reciprocal rank steam topic models $f$-test calibration one-hot encoding abstractive million song dataset popularity bias implicit feedback recommendation modcloth bert sigmoid function conditional independence session-based concept drift genres social trust scipy factorization machine transformer dynamic weighted majority pearson similarity citeulike underfitting balanced error rate translation-based recommendation gradient descent document frequency denoising autoencoders spectrogram concentration validation test set attention mechanism recurrent networks reddit bing transfomer feature imputation feature engineering neighborhood-based demographic parity price sensitivity movielens mmr / maximal marginal relevance pearson correlation coefficient computational social science fastfm user-free autorec explore/exploit tradeoff etsy hyperparameter epinions google local satisfaction kiva.org spotify markov chain unexpectedness overfitting memory-based yelp microsoft google news mechanical turk python explainability utility gap pinterest generative adversarial network regularizer user manifold tradesy deep learning gowalla prme / personalized ranking metric embedding delicious trigrams fvu / fraction of variance unexplained scikit-learn ensembling true positive rate side-information bookcrossing adobe tf-idf receiver operating characteristic t-sne goodreads csv autorec cumulative gain okapi bm-25 calibrated recommendations fairness amazon precision unix time item2vec bigrams matching problem bing polylens logistic regression taste profile dataset wide \& deep learning smart reply google+ unsupervised learning one-class linear regression topic modeling reddit significance testing online learning content aware facebook bookmooch.com re-ranking bipartite graph criteo sentiment analysis rossmann anomaly detection google json