/// <summary>
/// This rule tries to boost the ranking for Mathematics if it appears under multiple attribute types.
/// If Mathematics appears for both Skills and Knowledge in our result set.
/// Delete the lowest ranking one.
/// Times the rank for the remaining one by 1.1 adds 10% (this number was as a result of testing the results)
/// </summary>
/// <param name="attributes">The attributes.</param>
/// <returns></returns>
public IEnumerable <OnetSkill> BoostMathsSkills(IEnumerable <OnetSkill> attributes)
{
OnetSkill skillsMaths = attributes.FirstOrDefault(a => a.Name == MathsTitle && a.Category == CategoryType.Skill);
OnetSkill knowledgeMaths = attributes.FirstOrDefault(a => a.Name == MathsTitle && a.Category == CategoryType.Knowledge);
//if we have both remove one
if (skillsMaths != null && knowledgeMaths != null)
{
if (skillsMaths.Score > knowledgeMaths.Score)
{
attributes = attributes.Where(a => a.Name != MathsTitle || a.Category != CategoryType.Knowledge);
}
else
{
attributes = attributes.Where(a => a.Name != MathsTitle || a.Category != CategoryType.Skill);
}
var attributeList = attributes.ToList();
for (int ii = 0; ii < attributeList.Count(); ii++)
{
if (attributeList[ii].Name == MathsTitle)
{
attributeList[ii].Score = attributeList[ii].Score * 1.1m;
}
}
return(attributeList);
}
return(attributes);
}
/// <summary>
/// Some times in our top 20 results set we get attributes that are similar -
/// We improve user experience by combining similar in the top 20.
/// Using the combination table we combine simular attributes that are in the top 20 results"
/// After each combination we need to get a new top 20 of the attributes
/// </summary>
/// <param name="attributes"></param>
/// <returns></returns>
public IEnumerable <OnetSkill> CombineSimilarAttributes(IList <OnetSkill> attributes)
{
var combinations = combinationsQueryRepository.GetAll();
foreach (var combination in combinations)
{
var topAttributes = SelectTopAttributes(attributes);
OnetSkill elementOne = topAttributes.FirstOrDefault(a => a.Id == combination.OnetElementOneId);
OnetSkill elementTwo = topAttributes.FirstOrDefault(a => a.Id == combination.OnetElementTwoId);
//if we have both combine them
if (elementOne != null && elementTwo != null)
{
var scoreToUse = (elementOne.Score > elementTwo.Score) ? elementOne.Score : elementTwo.Score;
attributes = attributes.Where(a => a.Id != elementOne.Id && a.Id != elementTwo.Id).ToList();
attributes.Add(new OnetSkill {
Name = combination.Title, Category = CategoryType.Combination, Id = combination.CombinedElementId, OnetOccupationalCode = elementOne.OnetOccupationalCode, Score = scoreToUse
});
}
}
return(attributes);
}
