public KeyValuePair <int, string> GetEntityforIntent(ChatIntent intent)
{
string entity = string.Empty;
List <ChatEntity> entityList = new List <ChatEntity>(); // db.ChatEntity.Where(z => z.ChatIntentId == chatIntentId.ToString()).ToList();
List <string> questionList = db.ChatIntentQuestion.Where(x => x.ChatIntentId == intent.ChatIntentId && x.QuestionDesc.ToLower().Contains("entity")).Select(y => y.QuestionDesc).ToList();
TextInfo textInfo = new CultureInfo("en-US", false).TextInfo;
KeyValuePair <int, string> responseIntent = new KeyValuePair <int, string>();
int foundEntityMatch = 0;
string extractedEntityName = string.Empty;
string extractedEntityValue = string.Empty;
foreach (string question in questionList)
{
string textPriortoEntityinQuestion = string.Empty;
string textPriortoEntityinMessage = string.Empty;
int iStart = question.IndexOf("[");
int iEnd = question.IndexOf("]");
if (iStart != -1 && iEnd != -1)
{
extractedEntityName = question.Substring(iStart + 1, iEnd - iStart - 1);
textPriortoEntityinQuestion = question.Substring(0, iStart);
textPriortoEntityinMessage = Message.Substring(0, iStart);
LevenshteinDistance dist = new LevenshteinDistance();
int matching = dist.Compute(textPriortoEntityinQuestion.ToLower(), textPriortoEntityinMessage.ToLower());
if (matching <= 6)
{
int iStartSpace = textPriortoEntityinMessage.LastIndexOf(" ");
int iEndSpace = Message.IndexOf(",", textPriortoEntityinMessage.Length);
if (iEndSpace == -1)
{
iEndSpace = Message.Length;
}
extractedEntityValue = Message.Substring(iStartSpace, iEndSpace - iStartSpace);
extractedEntityValue = textInfo.ToTitleCase(extractedEntityValue);
AskMeOnlineApi online = new AskMeOnlineApi();
responseIntent = online.OnlineApiChannel(intent, extractedEntityName, extractedEntityValue);
foundEntityMatch = foundEntityMatch + 1;
break;
}
}
}
if (foundEntityMatch == 0)
{
ChatIntent noEntityFound = db.ChatIntent.Where(x => x.ParentId == intent.ChatIntentId).Where(x => x.IntentName.Contains("Entity")).FirstOrDefault();
HttpContext httpContext = HttpContext.Current;
httpContext.Session["EntityIssue"] = extractedEntityName;
responseIntent = new KeyValuePair <int, string>(noEntityFound.ChatIntentId, noEntityFound.Response);
}
return(responseIntent);
}
public KeyValuePair <int, string> PutEntityforIntent(ChatIntent intent)
{
KeyValuePair <int, string> responseIntent = new KeyValuePair <int, string>();
HttpContext httpContext = HttpContext.Current;
if (httpContext.Session["EntityIssue"] != null)
{
string extractedEntityName = httpContext.Session["EntityIssue"].ToString();
string extractedEntityValue = Message;
AskMeOnlineApi online = new AskMeOnlineApi();
responseIntent = online.OnlineApiChannel(intent, extractedEntityName, extractedEntityValue);
httpContext.Session["EntityIssue"] = null;
}
else
{
responseIntent = new KeyValuePair <int, string>(intent.ChatIntentId, "Sorry, i did not understand");
}
return(responseIntent);
}
public KeyValuePair <int, string> CheckIfAtleastOneEntityHasValue(List <ChatSessionEntity> entityListRecognized)
{
AskMeEntityExtracttionNLP nlp = new AskMeEntityExtracttionNLP();
List <EntityRecognition> entityListMessage = new List <EntityRecognition>();
List <ChatEntity> entityListDb = db.ChatEntity.Where(x => x.ChatIntentId == Node).ToList();
if (entityListDb.Where(x => x.EntityType.Contains("PERSON")).Any() || entityListDb.Where(x => x.EntityType.Contains("LOCATION")).Any())
{
entityListMessage = nlp.ExtractionChannel(Message);
}
HttpContext httpContext = HttpContext.Current;
foreach (ChatSessionEntity entityRecognized in entityListRecognized)
{
if (entityRecognized.NotRecognized)
{
if (entityRecognized.EntityName.ToUpper().Contains("PERSON"))
{
if (entityListMessage.Where(x => x.EntityType == "PERSON").Any())
{
entityRecognized.EntityValue = entityListMessage.Where(x => x.EntityType == "PERSON").Select(Y => Y.EntityValue).FirstOrDefault();
entityRecognized.EntityType = "PERSON";
entityRecognized.NotRecognized = false;
if (entityRecognized.EntityName.ToUpper().Contains("USERNAME"))
{
httpContext.Session["authUser"] = entityRecognized.EntityValue;
ChatSession chatSession = db.ChatSession.Where(x => x.SessionId == SessionId).FirstOrDefault();
chatSession.SessionUd = entityRecognized.EntityValue;
db.SaveChanges();
}
}
}
else if (entityRecognized.EntityName.ToUpper().Contains("LOCATION"))
{
if (entityListMessage.Where(x => x.EntityType == "LOCATION").Any())
{
entityRecognized.EntityValue = entityListMessage.Where(x => x.EntityType == "LOCATION").Select(Y => Y.EntityValue).FirstOrDefault();
entityRecognized.EntityType = "LOCATION";
entityRecognized.NotRecognized = false;
}
}
else if (entityRecognized.EntityName.ToUpper().Contains("NUMBER"))
{
string numericValue = new String(Message.Where(Char.IsDigit).ToArray());
if (numericValue.Length > 0)
{
entityRecognized.EntityValue = numericValue;
entityRecognized.EntityType = "NUMBER";
entityRecognized.NotRecognized = false;
}
}
}
}
string noEntityMessage = string.Empty;
foreach (ChatSessionEntity recognized in entityListRecognized)
{
ChatSessionEntity sessionEntity = new ChatSessionEntity();
sessionEntity.SessionId = SessionId;
sessionEntity.EntityType = recognized.EntityType;
sessionEntity.EntityName = recognized.EntityName;
sessionEntity.EntityValue = recognized.EntityValue;
sessionEntity.NotRecognized = recognized.NotRecognized;
if (recognized.NotRecognized)
{
noEntityMessage = noEntityMessage + recognized.EntityValue + " ";
}
}
db.SaveChanges();
if (noEntityMessage.Length > 1)
{
Message = noEntityMessage;
httpContext.Session[Node.ToString()] = entityListRecognized;
}
else
{
AskMeOnlineApi onlineApi = new AskMeOnlineApi();
ChatIntent forOnline = db.ChatIntent.Where(x => x.ChatIntentId == Node).FirstOrDefault();
return(onlineApi.OnlineApiChannelforNLP(forOnline, entityListRecognized));
}
return(new KeyValuePair <int, string>(Node, Message));
}
public ChatIntent GetEntityforIntentfromNLP(ChatIntent responseIntent)
{
AskMeEntityExtracttionNLP nlp = new AskMeEntityExtracttionNLP();
List <EntityRecognition> entityListMessage = new List <EntityRecognition>();
List <EntityRecognized> entityListRecognized = new List <EntityRecognized>();
List <ChatEntity> entityListDb = db.ChatEntity.Where(x => x.ChatIntentId == Node).ToList();
if (entityListDb.Where(x => x.EntityType.Contains("PERSON")).Any() || entityListDb.Where(x => x.EntityType.Contains("LOCATION")).Any())
{
entityListMessage = nlp.ExtractionChannel(Message);
}
HttpContext httpContext = HttpContext.Current;
foreach (ChatEntity entity in entityListDb)
{
if (entity.EntityType.ToUpper().Contains("PERSON") && entityListMessage.Count > 0)
{
var hasRecognition = entityListMessage.Where(x => x.EntityType == "PERSON");
if (hasRecognition.Any())
{
EntityRecognition recog = hasRecognition.FirstOrDefault();
EntityRecognized recognized = new EntityRecognized();
recognized.EntityType = entity.EntityType;
recognized.EntityName = entity.EntityName;
recognized.EntityValue = recog.EntityValue;
recognized.NotRecognized = false;
entityListRecognized.Add(recognized);
if (entity.EntityName.ToUpper().Contains("USERNAME"))
{
httpContext.Session["authUser"] = recog.EntityValue;
ChatSession chatSession = db.ChatSession.Where(x => x.SessionId == SessionId).FirstOrDefault();
chatSession.SessionUd = recog.EntityValue;
db.SaveChanges();
}
}
}
else if (entity.EntityType.ToUpper().Contains("LOCATION") && entityListMessage.Count > 0)
{
var hasRecognition = entityListMessage.Where(x => x.EntityType == "LOCATION");
if (hasRecognition.Any())
{
EntityRecognition recog = hasRecognition.FirstOrDefault();
EntityRecognized recognized = new EntityRecognized();
recognized.EntityType = entity.EntityType;
recognized.EntityName = entity.EntityName;
recognized.EntityValue = recog.EntityValue;
recognized.NotRecognized = false;
entityListRecognized.Add(recognized);
}
}
else if (entity.EntityType.ToUpper().Contains("NUMBER") && entityListMessage.Count > 0)
{
string numericValue = new String(Message.Where(Char.IsDigit).ToArray());
if (numericValue.Length > 0)
{
EntityRecognized recognized = new EntityRecognized();
recognized.EntityType = entity.EntityType;
recognized.EntityName = entity.EntityName;
recognized.EntityValue = numericValue;
recognized.NotRecognized = false;
entityListRecognized.Add(recognized);
}
}
else
{
EntityRecognized recognized = new EntityRecognized();
recognized.EntityType = entity.EntityType;
recognized.EntityName = entity.EntityName;
recognized.EntityValue = entity.EntityDescription;
recognized.NotRecognized = true;
entityListRecognized.Add(recognized);
}
}
string noEntityMessage = string.Empty;
List <ChatSessionEntity> sessionEntityList = new List <ChatSessionEntity>();
foreach (EntityRecognized recognized in entityListRecognized)
{
ChatSessionEntity sessionEntity = new ChatSessionEntity();
sessionEntity.SessionId = SessionId;
sessionEntity.EntityType = recognized.EntityType;
sessionEntity.EntityName = recognized.EntityName;
sessionEntity.EntityValue = recognized.EntityValue;
sessionEntity.NotRecognized = recognized.NotRecognized;
db.ChatSessionEntity.Add(sessionEntity);
sessionEntityList.Add(sessionEntity);
if (recognized.NotRecognized)
{
noEntityMessage = noEntityMessage + recognized.EntityValue + " ";
}
}
db.SaveChanges();
if (noEntityMessage.Length > 1)
{
Message = noEntityMessage;
httpContext.Session[Node.ToString()] = entityListRecognized;
}
else
{
AskMeOnlineApi onlineApi = new AskMeOnlineApi();
ChatIntent forOnline = db.ChatIntent.Where(x => x.ChatIntentId == Node).FirstOrDefault();
KeyValuePair <int, string> onlineResponse = onlineApi.OnlineApiChannelforNLP(forOnline, sessionEntityList);
Node = onlineResponse.Key;
Message = onlineResponse.Value;
}
responseIntent.ChatIntentId = Node;
responseIntent.Response = Message;
return(responseIntent);
}
