/**
*  @license
* Copyright 2021, JsData. All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.

* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ==========================================================================
*/
import { Scikit1D, Scikit2D, Tensor1D, Tensor2D } from '../types';
import { KNeighborsBase } from './KNeighborsBase';
import { accuracy } from '../model_selection/scorers';
/**
 * K-Nearest neighbor regressor.
 *
 * @example
 * ```js
 * import {KNeighborsRegressor} from 'scikitjs'
 *
 * let X = [[0], [1], [2], [3]]
 * let y = [0, 0, 1, 1]
 *
 * let knn = new KNeighborsRegressor(nNeighbor)
 *
 * await knn.fit(X, y)
 *
 * knn.predict([[1.5]]).print()
 * ```
 */
export declare class KNeighborsClassifier extends KNeighborsBase {
    classes_?: Tensor1D;
    score: typeof accuracy;
    name: string;
    /**
     * Applies this mdodel to predict the class probabilities of each given sample.
     *
     * @param X The samples for which the targets are to be predicted,
     *          where `X[i,j]` is the (j+1)-th feature of the (i+1)-th
     *          sample.
     * @param Y The predicted class probabilities `Y` where `Y[i,j]` is the
     *          predicted probability of sample `X[i,:]` having the to belong
     *          to class with index `j`.
     */
    predictProba(X: Scikit2D): Tensor2D;
    /**
     * Applies this mdodel to predict the class of each given sample.
     *
     * @param X The samples for which the targets are to be predicted,
     *          where `X[i,j]` is the (j+1)-th feature of the (i+1)-th
     *          sample.
     * @param y The predicted targets `y` where `y[i]` is the prediction
     *          for sample `X[i,:]`
     */
    predict(X: Scikit2D): Tensor1D;
    fit(X: Scikit2D, labels: Scikit1D): Promise<this>;
}