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package org.ansj.app.crf.pojo;

import org.ansj.app.crf.Config;
import org.ansj.app.crf.Model;

public class Element {

	public char name;
	private int tag = -1;
	public int len = 1;
	public String nature;

	public float[] tagScore;

	public int[] from;

	public Element(char name) {
		this.name = name;
	}

	public Element(Character name, int tag) {
		this.name = name;
		this.tag = tag;
	}

	public int getTag() {
		return tag;
	}

	public Element updateTag(int tag) {
		this.tag = tag;
		return this;
	}

	public Element updateNature(String nature) {
		this.nature = nature;
		return this;
	}

	@Override
	public String toString() {
		return name + "/" + len + "/" + tag;
	}

	public char getName() {
		return name;
	}

	/**
	 * 获得可见的名称
	 * 
	 * @return
	 */
	public String nameStr() {
		if (name >= 130 && name < 140) {
			return ("num" + (name - 130));
		} else if (name >= 140 && name < 150) {
			return ("en" + (name - 140));
		} else {
			return String.valueOf(name);
		}
	}

	public void maxFrom(Model model, Element element) {
		if (from == null) {
			from = new int[Config.TAG_NUM];
		}
		float[] pTagScore = element.tagScore;
		for (int i = 0; i < Config.TAG_NUM; i++) {
			float maxValue = 0;
			for (int j = 0; j < Config.TAG_NUM; j++) {

				float value = (pTagScore[j] + tagScore[i]) + model.tagRate(j, i);

				if (tagScore.length > Config.TAG_NUM) {
					value += tagScore[Config.TAG_NUM + j * Config.TAG_NUM + i];
				}

				if (value > maxValue) {
					maxValue = value;
					from[i] = j;
				}

			}

			tagScore[i] = maxValue;
		}
	}

}