/// <summary>
/// 根据出现次数计算一个权值
/// </summary>
/// <param name="pmiRank">pmi权值的数组,用于参考</param>
/// <param name="problemData">问题的数据,用于重复利用节省时间</param>
/// <returns>权重数组</returns>
public static double[] CalculateCountRank(string problem, string[] answer, double[] pmiRank, string problemData = "")
{
if (problemData == "")
{
SearchEngine.StatisticsKeyword(problem, out problemData);
}
double pmiSum = 0;//pmi权值和
foreach (double val in pmiRank)
{
pmiSum += val;
}
int[] answerCnt = new int[answer.Length]; //每个答案出现次数
int sum = 0; //总次数
for (int i = 0; i < answer.Length; i++)
{
if (Regex.IsMatch(answer[i], "^[0-9]*$")) //若为数字则不启用此权重算法
{
for (int i2 = 0; i2 < answer.Length; i2++)
{
answerCnt[i2] = 1;
}
sum = answer.Length;
break;
}
int p = problemData.IndexOf(answer[i]);
int cnt = 0;
while (p != -1)
{
sum++;
cnt++;
p = problemData.IndexOf(answer[i], p + answer[i].Length);
}
if (cnt == 0)
{
cnt++;
sum++;
}
answerCnt[i] = cnt;
}
double[] countRank = new double[answer.Length];
for (int i = 0; i < answer.Length; i++)
{
countRank[i] = pmiSum * ((double)answerCnt[i] / sum);
System.Diagnostics.Debug.Write("debug:" + answer[i] + ":" + answerCnt[i].ToString() + " ");
}
System.Diagnostics.Debug.WriteLine("");
return(countRank);
}
private static void WorkThread(object arg)
{
WorkArgs args = (WorkArgs)arg;
if (args.Type == TaskType.GetProblemData)
{
problemCnt = SearchEngine.StatisticsKeyword(args.Text, out problemData);
}
else
{
int[] arr = (args.Type == TaskType.AnswerCnt) ? answerCnt : problemAndAnswerCnt;
arr[args.Index] = SearchEngine.StatisticsKeyword(args.Text);
}
}
private static void WorkThread(object arg)//获取数据的工作线程
{
WorkArgs args = (WorkArgs)arg;
if (args.Type == TaskType.GetProblemData)//获取题目在文本库中出现概率
{
problemCnt = SearchEngine.StatisticsKeyword(args.Text, out problemData);
BrowserForm.browserForm.HighlightAndShowPage(problemData, answers);//显示高亮搜索页面
}
else//获取选项在文本库中出现概率
{
int[] arr = (args.Type == TaskType.AnswerCnt) ? answerCnt : problemAndAnswerCnt;
arr[args.Index] = SearchEngine.StatisticsKeyword(args.Text);
}
}
private static void WorkThread(object arg)//获取数据的工作线程
{
WorkArgs args = (WorkArgs)arg;
if (args.Type == TaskType.GetProblemData)//获取题目在文本库中出现概率
{
problemCnt = SearchEngine.StatisticsKeyword(args.Text, out problemData);
}
else//获取选项在文本库中出现概率
{
int[] arr = (args.Type == TaskType.AnswerCnt) ? answerCnt : problemAndAnswerCnt;
arr[args.Index] = SearchEngine.StatisticsKeyword(args.Text);
}
Debug.WriteLine(args.Index);
}
public void JumpAndHighlighting(string problem, string[] answer)
{
SearchEngine.StatisticsKeyword(problem, out string data);
; webBrowser_Main.DocumentText = Highlighting(data, answer);
}
