//CAUTION: The specified return values MUST correspond to the POSType database table entries
// otherwise every core function won't work properly
public static short GetDBPOSTagId(DistinctChunkTags chunkTag)
{
switch (chunkTag)
{
case DistinctChunkTags.NounPhrase:
return(1);
case DistinctChunkTags.AdjectivePhrase:
return(2);
default:
return(-1);
}
}
public List <ChunkedGroup> GetNearestGroupById(int groupId, int[] termIds, DistinctChunkTags chunkTag, int maxDistance)
{
List <ChunkedGroup> foundGroups = new List <ChunkedGroup>();
List <ChunkedGroup> targetGroups = Groups.Where(a => a.Id == groupId).ToList();
//If a group is inserted in the database as multiple phrases because of the maxPhraseSize limit
//in the phrase extraction phase, then the groupId in the XML structure only holds one of those
//phrase values. To still be able to find the target group by the ineer term ids we do the following:
if (targetGroups.Count == 0)
{
targetGroups = Groups.Where(a => {
var ids = a.Terms.Select(b => b.Id);
return(!termIds.Except(ids).Any());
}).ToList();
}
foreach (ChunkedGroup targetGroup in targetGroups)
{
//Get the positions in the sentence by the first and last term of the group id
int firstPosition = targetGroup.Terms.Count > 0 ? targetGroup.Terms.First().Order : -1;
int lastPosition = targetGroup.Terms.Count > 0 ? targetGroup.Terms.Last().Order : -1;
//If we find a group of the specified chunk tag OR any group with a related POS tag of the specified chunk,
//and the distance between the first term of our target group and the last term of a candidate group
//or the last term of the target group and the first term of a candidate group, is smaller
//than the specified target distance add the candidate group
if (firstPosition >= 0 && lastPosition >= 0)
{
foundGroups.AddRange(Groups.Where(a => (a.Tag == chunkTag.StringValue() ||
a.Terms.Any(b => StaticMappings.ChunkPOSMapping[chunkTag].Contains(b.POS))) &&
a.Terms.Count > 0 &&
(Math.Abs(lastPosition - a.Terms.First().Order) < maxDistance ||
Math.Abs(firstPosition - a.Terms.Last().Order) < maxDistance)));
}
}
foreach (ChunkedGroup targetGroup in targetGroups)
{
foundGroups.Remove(targetGroup);
}
return(foundGroups.Distinct().ToList());
}
