public void Clear()
{
TokenID.Clear();
TokenFrequency.Clear();
Tokens.Clear();
InvokeChanged();
}
public Boolean RemoveToken(String token)
{
Boolean output = TokenFrequency.Remove(token);
output = output && TokenID.Remove(token);
output = output && Tokens.Remove(token);
InvokeChanged();
return output;
}
/// <summary>
/// Gets frequency of the token
/// </summary>
/// <param name="token">The token.</param>
/// <returns></returns>
public Int32 GetTokenFrequency(String token)
{
if (Count == 0) return 0;
if (TokenFrequency.ContainsKey(token))
{
return TokenFrequency[token];
}
return 0;
}
/// <summary>
/// Gets ranked list of tokens and their absolute frequencies
/// </summary>
/// <param name="limit">The limit.</param>
/// <returns></returns>
public List<KeyValuePair<String, Int32>> GetRankedTokenFrequency(Int32 limit = -1)
{
if (limit == -1) limit = Tokens.Count;
List<KeyValuePair<String, Int32>> output = new List<KeyValuePair<string, int>>();
///List<KeyValuePair<String, Int32>> list = new List<KeyValuePair<string, int>>();
List<KeyValuePair<string, int>> list = TokenFrequency.OrderByDescending(x => x.Value).ToList();
output = list.Take(Math.Min(limit, list.Count)).ToList();
return output;
}
/// <summary>
/// Returns cross-section tokens between the specified list and dictionary
/// </summary>
/// <param name="toMatch">To match.</param>
/// <param name="removeFromToMatch">if set to <c>true</c> it will remove tokens that were matched from specified <c>toMatch</c> list.</param>
/// <returns></returns>
public List<String> GetTokens(List<String> toMatch, Boolean removeFromToMatch = true)
{
List<String> output = new List<string>();
for (int i = 0; i < toMatch.Count; i++)
{
if (TokenFrequency.ContainsKey(toMatch[i]))
{
output.Add(toMatch[i]);
}
}
if (removeFromToMatch) toMatch.RemoveAll(x => output.Contains(x));
return output;
}
/// <summary>
/// Removes specified tokens from the dictionary
/// </summary>
/// <param name="tokens">The tokens.</param>
/// <param name="inverseFilter">if set to <c>true</c> [inverse filter].</param>
/// <returns></returns>
public Int32 FilterTokens(List<String> tokens, Boolean inverseFilter = true)
{
Int32 c = 0;
if (!inverseFilter)
{
Tokens.RemoveAll(x => tokens.Contains(x));
for (int i = 0; i < tokens.Count; i++)
{
TokenFrequency.Remove(tokens[i]);
TokenID.Remove(tokens[i]);
c++;
}
InvokeChanged();
return c;
}
List<String> toRemove = new List<string>();
if (inverseFilter)
{
var tkns = GetTokens();
tokens.ForEach(x => tkns.Remove(x));
toRemove.AddRange(tkns);
}
else
{
toRemove.AddRange(tokens);
}
foreach (String tkn in toRemove)
{
if (RemoveToken(tkn))
{
c++;
}
}
InvokeChanged();
return c;
}