public void RequestWeightedSimilarAndThen(SimilarQuery query, CategoryRatio ratio,
Action <List <MultimediaObject> > handler)
{
logger.Debug("RequestWeightedSimilarAndThen");
queryFinishedCallback = handler;
StartCoroutine(ExecuteMultiQuery(query, ratio));
}
public static CategoryRatio CreateUniformRatio(string[] categories)
{
CategoryRatio cr = new CategoryRatio();
foreach (string category in categories)
{
cr.AddWeight(category, 1d / categories.Length);
}
return(cr);
}
/// <summary>
/// Merges multiple ResultObjects of different categories to a single list of ContentObjects.
/// The merge is based on a set of weights.
/// </summary>
/// <param name="results">An array of different ResultObjects for several categories</param>
/// <param name="ratio">An array with weights for the different categories in the results array</param>
/// <returns>
/// A list of ContentObjects where the content's value is the weighted score per category. The list is sorted in
/// descending order (the higher the value, the earlier in the list)
/// </returns>
public List <ContentObject> Merge(ResultObject[] results, CategoryRatio ratio)
{
// Attetion! No sanity checks: Must be different result.categories, ratios must sum up to 1.
var totalResults = new List <ContentObject>();
var scores = Prepare(results);
while (scores.Count > 0)
{
var list = Pop(scores);
while (list.Count > 0)
{
var needle = Pop(list);
var lonely = true;
foreach (var haystack in scores)
{
var size = haystack.Count;
for (var i = 0; i < size; i++)
{
if (needle.Equals(haystack[i]))
{
var t = haystack[i];
totalResults.Add(MergeWeighted(needle.Key, new[] { needle.Score, t.Score },
new[] { ratio.GetRatio(needle.Category), ratio.GetRatio(t.Category) }));
haystack.Remove(t);
size--;
lonely = false;
}
}
}
if (lonely)
{
var weightedScore = needle.Score * ratio.GetRatio(needle.Category);
totalResults.Add(new ContentObject(needle.Key, weightedScore.ToString()));
}
}
}
totalResults.Sort((a, b) => - 1 * a.CompareTo(b));
return(totalResults);
}
public static CategoryRatio CreateUniformRatio(SimilarQuery query)
{
CategoryRatio cr = new CategoryRatio();
List <string> categories = new List <string>();
foreach (TermContainer tc in query.containers)
{
foreach (TermsObject to in tc.terms)
{
categories.AddRange(to.categories);
}
}
foreach (string category in categories)
{
cr.AddWeight(category, 1d / categories.Count);
}
return(cr);
}
protected bool Equals(CategoryRatio other)
{
return(guid.Equals(other.guid));
}
private IEnumerator ExecuteMultiQuery(SimilarQuery query, CategoryRatio ratio)
{
// === SIMILAR ===
// Initial SimilarQuery
yield return(similarRequest =
CineastUtils.BuildSimilarRequest(CineastUtils.Configuration.FindSimilarSegmentsUrl(), query));
// Parse response
earlyBreak = !Parse(similarRequest.text, out similarResult);
yield return(similarResult);
if (earlyBreak)
{
yield break;
}
// Check if empty
if (similarResult.IsEmpty())
{
earlyBreak = true;
yield break; // Stop and
}
ContentObject[] tempResult = CineastUtils.ExtractContentObjects(similarResult);
if (ratio != null && similarResult.results.Length > 1)
{
foreach (ResultObject ro in similarResult.results)
{
ContentObject.ArrayToStrig(ro.content);
}
ResultMerger merger = new ResultMerger();
tempResult = merger.Merge(similarResult.results, ratio)
.ToArray();
ContentObject.ArrayToStrig(tempResult);
}
// === SEGMENTS ===
// segments
yield return(segmentRequest =
CineastUtils.BuildSegmentRequest(CineastUtils.Configuration.FindSegmentsByIdUrl(),
CineastUtils.ExtractIdArray(tempResult)));
// parse response
earlyBreak = !Parse(segmentRequest.text, out segmentResult);
yield return(segmentResult);
if (earlyBreak)
{
yield break;
}
// === METAS ===
yield return(metaRequest =
CineastUtils.BuildMetadataRequest(CineastUtils.Configuration.FindMetadataUrl(),
CineastUtils.ExtractIdArray(segmentResult.content)));
earlyBreak = !Parse(metaRequest.text, out metaResult);
yield return(metaResult);
if (earlyBreak)
{
yield break;
}
// meta->mmo
objectList = CineastUtils.Convert(metaResult.content);
// === OBJECTS ===
yield return(objectRequest =
CineastUtils.BuildObjectsRequest(CineastUtils.Configuration.FindObjectsUrl(),
CineastUtils.ExtractIdArray(objectList.ToArray())));
yield return(objectsResult = JsonUtility.FromJson <ObjectsResult>(objectRequest.text));
// merge results
List <MultimediaObject> objects = CineastUtils.Convert(objectsResult.content);
foreach (MultimediaObject mmo in objects)
{
if (objectList.Contains(mmo))
{
objectList.Find(o => o.Equals(mmo)).Merge(mmo);
}
}
results = new List <MultimediaObject>(objectList);
// === WRAPUP ===
foreach (MultimediaObject mmo in objectList)
{
mmo.resultIndex = CineastUtils.GetIndexOf(mmo, similarResult) + 1;
}
// === SORT LIST ===
objectList.Sort(
Comparison);
List <MultimediaObject> transferList;
if (filterEngine != null)
{
transferList = filterEngine.ApplyFilters(objectList);
}
else
{
transferList = objectList;
}
// cleanup
finished = true;
if (queryFinishedCallback != null)
{
queryFinishedCallback.Invoke(transferList);
}
yield return(true);
}
private IEnumerator ExecuteMultiQuery(SimilarQuery query, CategoryRatio ratio)
{
// === SIMILAR ===
// Initial SimilarQuery
logger.Debug("Starting initial similar request.\n" + JsonUtility.ToJson(query));
yield return(similarRequest = CineastUtils.BuildSimilarRequest(CineastUtils.Configuration.FindSimilarSegmentsUrl(), query));
logger.Debug("Received similar response: " + similarRequest.text);
// Parse response
earlyBreak = !Parse(similarRequest.text, out similarResult);
yield return(similarResult);
if (earlyBreak)
{
logger.Error("HTTP error upon similar response");
yield break;
}
logger.Info("Successfully parsed similar response");
// Check if empty
if (similarResult.IsEmpty())
{
earlyBreak = true;
logger.Error("Empty similar result");
yield break; // Stop and
}
ContentObject[] tempResult = CineastUtils.ExtractContentObjects(similarResult);
if (ratio != null && similarResult.results.Length > 1)
{
logger.Debug("Merging...");
foreach (ResultObject ro in similarResult.results)
{
logger.Debug("Result for category {0} contains {1} entries.\n\t{2}", ro.category, ro.content.Length,
ContentObject.ArrayToStrig(ro.content));
}
ResultMerger merger = new ResultMerger();
tempResult = merger.Merge(similarResult.results, ratio)
.ToArray();
logger.Debug("After merge: {0} unique entries\n\t{1}", tempResult.Length,
ContentObject.ArrayToStrig(tempResult));
}
// === SEGMENTS ===
// segments
logger.Debug("Starting segments query");
yield return(segmentRequest =
CineastUtils.BuildSegmentRequest(CineastUtils.Configuration.FindSegmentsByIdUrl(),
CineastUtils.ExtractIdArray(tempResult)));
logger.Debug("Received segments response:\n" + segmentRequest.text);
// parse response
earlyBreak = !Parse(segmentRequest.text, out segmentResult);
yield return(segmentResult);
if (earlyBreak)
{
logger.Error("HTTP error upon segments response");
yield break;
}
logger.Info("Successfully parsed segments response");
// === METAS ===
logger.Debug("Starting metadata request");
yield return(metaRequest =
CineastUtils.BuildMetadataRequest(CineastUtils.Configuration.FindMetadataUrl(),
CineastUtils.ExtractIdArray(segmentResult.content)));
logger.Debug("Received metadata response:\n" + metaRequest.text);
earlyBreak = !Parse(metaRequest.text, out metaResult);
yield return(metaResult);
if (earlyBreak)
{
logger.Error("HTTP error upon metadata response");
yield break;
}
logger.Info("Successfully parsed metadata response");
// meta->mmo
objectList = CineastUtils.Convert(metaResult.content);
logger.Info("Successfully converted metadata result to MultimediaObjects");
// === OBJECTS ===
logger.Debug("Starting object query");
yield return(objectRequest =
CineastUtils.BuildObjectsRequest(CineastUtils.Configuration.FindObjectsUrl(),
CineastUtils.ExtractIdArray(objectList.ToArray())));
logger.Debug("Received objects response:\n" + objectRequest.text);
yield return(objectsResult = JsonUtility.FromJson <ObjectsResult>(objectRequest.text));
logger.Info("Successfully parsed objects response");
// merge results
List <MultimediaObject> objects = CineastUtils.Convert(objectsResult.content);
logger.Debug("Successfully converted object result to MultimediaObjects");
foreach (MultimediaObject mmo in objects)
{
if (objectList.Contains(mmo))
{
objectList.Find(o => o.Equals(mmo)).Merge(mmo);
}
}
logger.Info("Finished merging different MultimediaObject lists");
results = new List <MultimediaObject>(objectList);
// === WRAPUP ===
logger.Debug("Applying result index to MultimediaObject list");
foreach (MultimediaObject mmo in objectList)
{
mmo.resultIndex = CineastUtils.GetIndexOf(mmo, similarResult) + 1;
}
logger.Info("Result contains " + objectList.Count + " entities");
logger.Debug("Full result list:\n" + DumpMMOList(objectList));
// === SORT LIST ===
logger.Debug("Sorting list");
objectList.Sort(
Comparison);
logger.Debug("Sorted list: \n" + DumpMMOList(objectList));
List <MultimediaObject> transferList;
if (filterEngine != null)
{
logger.Debug("FilterEngine installed with " + filterEngine.GetFilterCount() + " filters.");
transferList = filterEngine.ApplyFilters(objectList);
}
else
{
logger.Debug("No FilterEngine installed - no filtering");
transferList = objectList;
}
// cleanup
finished = true;
if (queryFinishedCallback != null)
{
logger.Info("Query completed, passing resulting MultimediaObject list to callback");
queryFinishedCallback.Invoke(transferList);
}
yield return(true);
}
