export declare function argMax(arr: number[]): number;
export declare function rowNormalize(mat: number[][]): number[][];
export declare function multiply(A: number[][], B: number[][]): number[][];
export declare function transpose(A: number[][]): number[][];
export declare function rbfKernel(X: number[][], Y: number[][], gamma: number): number[][];
export declare function knnKernel(X: number[][], Y: number[][], nNeighbors: number): number[][];