wprecservice.proto

syntax="proto3";

option java_multiple_files = true;
option java_package = "wmind.demo.wprecservice";
option java_outer_classname = "WpRecService";

package WpRecService;

service WpRecService {
	rpc GetRecommend (RecommendRequest) returns (RecommendResponse) {}
	rpc GetMfRecommend (MfRequest) returns (RecommendResponse) {}
	rpc GetMfCateRecommend (MfRequest) returns (MfDataResponse) {}
}

message MfRequest {
	string dayFrom = 1;
	string dayTo = 2;
	// predictMoment and user are only for one-time prediction
	string predictMoment = 3;
	uint32 user = 4;
	uint32 dimension = 5;
	// unobserved weight
	float weight = 6;
	// regularization coefficient
	float coef = 7;
	uint32 nIter = 8;
}

message RecommendRequest {
	string methodName = 1;
	string dayFrom = 2;
	string dayTo = 3;
	string predictMoment = 4;
	uint32 user = 5;
}

message RecommendResponse {
	// -1 for no error, 0 for bad request, 1 for process error
	int32 error = 1;
	repeated Predicted result = 2;
}

message Predicted {
	uint32 id = 1;
	uint32 slot = 2;
	float score = 3;
}

message MfDataResponse {
// -1 for no error, 0 for bad request, 1 for process error
	int32 error = 1;
	uint32 numFeatures = 2;
	string users = 3;
	string items = 4;
}