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/*
 * Copyright (c) 2010-2025 Haifeng Li. All rights reserved.
 *
 * Smile is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Smile is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Smile. If not, see .
 */
package smile.sequence;

import java.io.Serializable;

/**
 * A sequence labeler assigns a class label to each position of the sequence.
 *
 * @param  the data type of model input objects.
 *
 * @author Haifeng Li
 */
public interface SequenceLabeler extends Serializable {
    /**
     * Predicts the sequence labels.
     * @param x the sequence. At each position, it may be the original symbol or
     * a feature set about the symbol, its neighborhood, and/or other information.
     * @return the sequence labels.
     */
    int[] predict(T[] x);
}