Semantics 6 Behavioral research 5 Commerce 5 Machine design 5 Recommender systems 5 Sales 5 Budget control 4 Economics 4 Forecasting 4 Information retrieval 4 Mechanism design 4 Pareto principle 4 Computational linguistics 3 Costs 3 Embeddings 3 Information systems 3 Natural language processing systems 3 Polynomial approximation 3 Search engines 3 Social networking (online) 3 State of the art 3 Stochastic systems 3 User's preferences 3 'current 2 Cameras 2 Combinatorial optimization 2 Computational efficiency 2 Computer networks 2 Constant factor approximation 2 Convolution 2