A system and method for generating a recommendation system based on supervised learning includes generating a master dataset, selecting a subset of features and a subset of rows in the master dataset, selecting a supervised learning method, building a first model based on a first dataset and the supervised learning method, the first dataset being restricted to the subset of features and the subset of rows in the master dataset, determining a set of candidate items, identifying a first user, generating a prediction of a user response of the first user to the set of candidate items based on the first model, and generating a recommendation of a first candidate item based on the prediction.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A computer-implemented method comprising: generating, using one or more computing devices, a master dataset including user data, item data, and user-item interaction data of a plurality of users; selecting, using the one or more computing devices, a subset of features and a subset of rows in the master dataset, the subset of rows corresponding to a first set of users sharing a similar attribute in the master dataset; selecting, using the one or more computing devices, a supervised learning method; building, using the one or more computing devices, a first model based on a first dataset and the supervised learning method, the first dataset being restricted to the subset of features and the subset of rows in the master dataset; identifying, using the one or more computing devices, a first user from the first set of users; determining, using the one or more computing devices, a set of candidate items; generating, using the one or more computing devices, a prediction of a user response of the first user to the set of candidate items based on the first model; generating, using the one or more computing devices, a recommendation of a first candidate item based on the prediction; and transmitting, using the one or more computing devices, the recommendation to a client device for display to the first user. 2. The computer-implemented method of claim 1, wherein generating the dataset comprises: retrieving user data of the plurality of users; retrieving item data of a plurality of items; retrieving positive user-item interaction data for the plurality of users and the plurality of items; determining whether negative user-item interaction data for the plurality of users and the plurality of items is retrievable; responsive to determining that the negative user-item interaction data is non-retrievable, artificially creating the negative user-item interaction data; and combining the user data, the item data, the positive user-item interaction data, and the negative user-item interaction data into a plurality of rows in the dataset. 3. The computer-implemented method of claim 2, where artificially creating the negative user-item interaction data comprises: identifying a set of active users in the dataset; identifying a set of topmost active items that the set of active users ignored; and artificially creating the negative user-item interaction data based on the set of active users and the set of topmost active items. 4. The computer-implemented method of claim 1, wherein determining the set of candidate items comprises: determining a business rule influencing the recommendation of the first candidate item; and determining the set of candidate items that satisfies a constraint of the business rule. 5. The computer-implemented method of claim 4, further comprising: determining whether the first user is a new user; responsive to determining that the first user is the new user, identifying a number of items for inclusion in the set of candidate items that satisfies the constraint of the business rule, the number of items identified from one or more of items most popular with existing users, and items interacted with favorably by a set of one or more other users similar to the first user. 6. The computer-implemented method of claim 4, further comprising: determining whether the first user is a new user; responsive to determining that the first user is not the new user, identifying a number of items for inclusion in the set of candidate items that satisfies the constraint of the business rule, the number of items identified from one or more of items most popular with existing users, items similar to those items interacted with favorably by the first user, and items interacted with favorably by a set of one or more other users similar to the first user. 7. The computer-implemented method of claim 1, further comprising: determining a business objective; determining a business rule influencing the recommendation of the first candidate item; and identifying a proxy for the business objective, the proxy for the business objective being based on the prediction of the user response, wherein the recommendation of the first candidate item is based on an optimization of the proxy for the business objective and a constraint of the business rule. 8. The computer-implemented method of claim 1, wherein the similar attribute includes one from a group of usage behavior and demographics. 9. The computer-implemented method of claim 4, wherein the business objective includes one from a group of profit, revenue, user retention, number of user interactions, user interaction time, and user interaction type. 10. The computer-implemented method of claim 1, wherein the user response of the first user to the set of candidate items includes one from a group of like, dislike, purchase, view, ignore, rating, money spent, profit resulting from purchase and total interaction time. 11. A system comprising: one or more processors; and a memory including instructions that, when executed by the one or more processors, cause the system to: generate a master dataset including user data, item data, and user-item interaction data of a plurality of users; select a subset of features and a subset of rows in the master dataset, the subset of rows corresponding to a first set of users sharing a similar attribute in the master dataset; select a supervised learning method; build a first model based on a first dataset and the supervised learning method, the first dataset being restricted to the subset of features and the subset of rows in the master dataset; identify a first user from the first set of users; determine a set of candidate items; generate a prediction of a user response of the first user to the set of candidate items based on the first model; generate a recommendation of a first candidate item based on the prediction; and transmit the recommendation to a client device for display to the first user. 12. The system of claim 11, wherein the instructions to determine the set of candidate items, when executed by the one or more processors, cause the system to: determine a business rule influencing the recommendation of the first candidate item; and determine the set of candidate items that satisfies a constraint of the business rule. 13. The system of claim 12, wherein the instructions, when executed by the one or more processors, further cause the system to: determine whether the first user is a new user; responsive to determining that the first user is the new user, identify a number of items for inclusion in the set of candidate items that satisfies the constraint of the business rule, the number of items identified from one or more of items most popular with existing users, and items interacted with favorably by a set of one or more other users similar to the first user. 14. The system of claim 12, wherein the instructions, when executed by the one or more processors, further cause the system to: determine whether the first user is a new user; responsive to determining that the first user is not the new user, identify a number of items for inclusion in the set of candidate items that satisfies the constraint of the business rule, the number of items identified from one or more of items most popular with existing users, items similar to those items interacted with favorably by the first user, and items interacted with favorably by a set of one or more other users similar to the first user. 15. The system of claim 11, wherein the instructions, when executed by the one or more processors, further cause the system to: determine a business objective; determine a business rule influencing the recommendation of the first candidate item; and identify a proxy for the business objective, the proxy for the business objective being based on the prediction of the user response, wherein the recommendation of the first candidate item is based on an optimization of the proxy for the business objective and a constraint of the business rule. 16. A computer-program product comprising a non-transitory computer usable medium including a computer readable program, wherein the computer readable program, when executed on a computer, causes the computer to perform operations comprising: generating a master dataset including user data, item data, and user-item interaction data of a plurality of users; selecting a subset of features and a subset of rows in the master dataset, the subset of rows corresponding to a first set of users sharing a similar attribute in the master dataset; selecting a supervised learning method; building a first model based on a first dataset and the supervised learning method, the first dataset being restricted to the subset of features and the subset of rows in the master dataset; identifying a first user from the first set of users; determining a set of candidate items; generating a prediction of a user response of the first user to the set of candidate items based on the first model; generating a recommendation of a first candidate item based on the prediction; and transmitting the recommendation to a client device for display to the first user. 17. The computer program product of claim 16, wherein the operations for determining the set of candidate items further comprise: determining a business rule influencing the recommendation of the first candidate item; and determining the set of candidate items that satisfies a constraint of the business rule. 18. The computer program product of claim 17, wherein the operations further comprise: determining whether the first user is a new user; and responsive to determining that the first user is the new user, identifying a number of items for inclusion in the set of candidate items that satisfies the constraint of the business rule, the number of items identified from one or more of items most popular with existing users, and items interacted with favorably by a set of one or more other users similar to the first user. 19. The computer program product of claim 17, wherein the operations further comprise: determining whether the first user is a new user; responsive to determining that the first user is not the new user, identifying a number of items for inclusion in the set of candidate items that satisfies the constraint of the business rule, the number of items identified from one or more of items most popular with existing users, items similar to those items interacted with favorably by the first user, and items interacted with favorably by a set of one or more other users similar to the first user. 20. The computer program product of claim 16, wherein the operations further comprise: determining a business objective; determining a business rule influencing the recommendation of the first candidate item; and identifying a proxy for the business objective, the proxy for the business objective being based on the prediction of the user response, wherein the recommendation of the first candidate item is based on an optimization of the proxy for the business objective and a constraint of the business rule.