The present disclosure discloses a system and method for deploying customized machine learning services. Specifically, a computing device of a machine learning service provider maintains a meta training component and a plurality of meta data schemas. The computing device also generates a customized data schema based on customization of one of the plurality of meta data schemas by a machine learning service client. Further, the computing device can generate a training component based on the meta training component. The training component is compatible with the customized data schema. Then, the computing device deploys the customized data schema and the training component to one or more client devices to automatically generate a machine learning model.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method comprising: maintaining a meta training component and a plurality of meta data schemas at a computing device by a machine learning service provider; generating, by the computing device, a first customized data schema based on customization of one of the plurality of meta data schemas by a machine learning service client; generating, by the computing device, a first training component based on the meta training component, wherein the first training component is compatible with the first customized data schema; and deploying, by the computing device, the first customized data schema and the first training component to one or more client devices to automatically generate a machine learning model. 2. The method of claim 1, further comprising: receiving a client data set; and converting the client data set to a first client training data that is compatible with the first customized data schema which is derived from a first meta data schema. 3. The method of claim 2, further comprising: deploying a first serving component to the one or more client devices, wherein the first serving component: receives a request from the machine learning service client, wherein the request includes at least an element not directly retrievable from the client data set; loads the machine learning model and corresponding client training data in response to receiving the request; and provides machine learning service to the machine learning service client based on the model, the client training data, and the request. 4. The method of claim 1, wherein the machine learning model is used to optimize a particular key performance indicator (KPI), KPI indicating a type of performance measurement that evaluates an organization or an activity in which the organization engages. 5. The method of claim 4, wherein the particular key performance indicator (KPI) comprises one or more of: a sales growth, sales bookings, a quote to close ratio, a sales target, an average profit margin, an average purchase value, a return on investment (ROI), keyword performance, an email marketing engagement level, a social sentiment level, average call handling time, a client satisfaction level, and a call resolution rate. 6. The method of claim 1, wherein the plurality of meta data schemas comprises: a meta data schema for user label dataset; a meta data schema for user behavior dataset; a meta data schema for user text dataset; a meta data schema for entity text dataset; a meta data schema for user attribute dataset; and a meta data schema for entity attribute dataset. 7. The method of claim 6, wherein the meta data schema for user label dataset comprises a user identifier, a label, and contexts. 8. The method of claim 6, wherein the meta data schema for user behavior dataset comprises a user identifier and a set of actions. 9. The method of claim 6, wherein the meta data schema for user text dataset comprises a user identifier and a set of texts. 10. The method of claim 6, wherein the meta data schema for entity text dataset comprises an entity identifier and a set of texts. 11. The method of claim 6, wherein the meta data schema for user attribute dataset comprises a user identifier and a set of attributes. 12. The method of claim 6, wherein the meta data schema for entity attribute dataset comprises an entity identifier and a set of attributes. 13. The method of claim 2, further comprising: converting the client data set to a second client training data that is compatible with a second customized data schema which is derived from a second meta data schema, wherein the first meta data schema is different from the second meta data schema. 14. The method of claim 1, wherein the plurality of meta data schemas that share a common element reinforce each other while the first training component generating the machine learning model. 15. The method of claim 1, wherein the meta training component comprises: selecting a subset of the plurality of meta data schemas corresponding to the machine learning service client; extracting one or more features from the client data set; and improving a key performance indicator (KPI) specific to the machine learning service client based on the extracted one or more features. 16. The method of claim 3, further comprising: deploying a second serving component to the one or more client devices, wherein the second serving component automatically synchronizes with the first serving component. 17. The method of claim 2, wherein the client data set includes sensitive or confidential data and is not used directed by the machine learning service provider for model training, and wherein the first client training data does not include sensitive or confidential data and is used by the machine learning service provider for model training. 18. The method of claim 1, further comprising: generating a second training component based on the meta training component, wherein the second training component is compatible with a second customized data schema which is derived from one of the plurality of meta data schemas, wherein the second customized data schema is different from the first customized data schema; wherein the second training component is incompatible with the first customized data schema; and wherein the first training component is incompatible with the second customized data schema. 19. A non-transitory computer readable medium comprising instructions which, when executed by one or more hardware processors, causes performance of operations comprising: maintaining a meta training component and a plurality of meta data schemas by a machine learning service provider; generating a first customized data schema based on customization of one of the plurality of meta data schemas by a machine learning service client; generating a first training component based on the meta training component, wherein the first training component is compatible with the first customized data schema; and deploying the first customized data schema and the first training component to one or more client devices to automatically generate a machine learning model. 20. A system comprising: at least one device including a hardware processor; the system being configured to perforin operations comprising: maintaining a meta training component and a plurality of meta data schemas by a machine learning service provider; generating a first customized data schema based on customization of one of the plurality of meta data schemas by a machine learning service client; generating a first training component based on the meta training component, wherein the first training component is compatible with the first customized data schema; and deploying the first customized data schema and the first training component to one or more client devices to automatically generate a machine learning model.