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Improve dynamic question learning loop

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hz
2026-07-23 16:50:53 -05:00
parent c91e70deb5
commit 32c455bba0
14 changed files with 422 additions and 16 deletions
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api/QuestionsApi/Services/DynamicQuestionService.cs
+48 -5
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@@ -49,13 +49,52 @@ public sealed class DynamicQuestionService
}
var mastery = await _store.MasteryAsync(userId);
var dueReviews = await _store.DueReviewsAsync(userId, DateTime.UtcNow);
var dueByObjective = dueReviews.ToDictionary(value => value.ObjectiveId, StringComparer.Ordinal);
var candidates = unseen
.Where(group => group.Key != run.PreviousObjectiveId || unseen.Count == 1)
.OrderBy(group => mastery.TryGetValue(group.Key, out var value) ? value.Elo : 1000)
.ThenBy(_ => RandomNumberGenerator.GetInt32(int.MaxValue))
.ToList();
var weakestBand = candidates.Take(Math.Min(4, candidates.Count)).ToList();
var selectedObjective = weakestBand[RandomNumberGenerator.GetInt32(weakestBand.Count)];
var roll = RandomNumberGenerator.GetInt32(100);
IGrouping<string, DynamicQuestionBlueprint> selectedObjective;
var dueCandidates = candidates.Where(value => dueByObjective.ContainsKey(value.Key)).ToList();
if (roll < 50 && dueCandidates.Count == 0 && dueByObjective.Count > 0)
dueCandidates = byObjective
.Where(value => dueByObjective.ContainsKey(value.Key)
&& (value.Key != run.PreviousObjectiveId || dueByObjective.Count == 1))
.ToList();
if (roll < 50 && dueCandidates.Count > 0)
{
selectedObjective = dueCandidates
.OrderBy(value => dueByObjective[value.Key].DueUtc)
.ThenBy(_ => RandomNumberGenerator.GetInt32(int.MaxValue))
.First();
}
else if (roll < 80)
{
var systemAttempts = byObjective
.GroupBy(group => group.OrderByDescending(value => value.Version).First().System)
.ToDictionary(
group => group.Key,
group => group.Sum(objective => mastery.TryGetValue(objective.Key, out var value) ? value.Attempts : 0),
StringComparer.Ordinal);
selectedObjective = candidates
.OrderBy(group =>
{
var latest = group.OrderByDescending(value => value.Version).First();
var weight = DynamicBlueprintCoveragePolicy.Weight(latest);
return (systemAttempts.GetValueOrDefault(latest.System) + 1) / weight;
})
.ThenBy(_ => RandomNumberGenerator.GetInt32(int.MaxValue))
.First();
}
else
{
var weakestBand = candidates
.OrderBy(group => mastery.TryGetValue(group.Key, out var value) ? value.Elo : 1000)
.Take(Math.Min(4, candidates.Count))
.ToList();
selectedObjective = weakestBand[RandomNumberGenerator.GetInt32(weakestBand.Count)];
}
var blueprint = selectedObjective
.OrderByDescending(value => value.Version)
.First();
@@ -97,11 +136,15 @@ public sealed class DynamicQuestionService
DifficultyTier = selectedFamily.DifficultyTier,
EffectiveAbilityElo = effectiveAbility,
FamilyElo = selectedFamilyElo,
IsScheduledReview = dueByObjective.TryGetValue(blueprint.ObjectiveId, out var reviewItem),
ReviewItemId = reviewItem?.Id ?? "",
ReviewStage = reviewItem?.Stage ?? 0,
ExpiresUtc = DateTime.UtcNow.AddDays(7)
};
var generated = _generator.Generate(
blueprint, claims.Seed, claims.Nonce, claims.GeneratorVersion, claims.CaseFamilyId);
run.SeenObjectiveIds.Add(blueprint.ObjectiveId);
if (!run.SeenObjectiveIds.Contains(blueprint.ObjectiveId, StringComparer.Ordinal))
run.SeenObjectiveIds.Add(blueprint.ObjectiveId);
run.PreviousObjectiveId = blueprint.ObjectiveId;
run.RecentCaseFamilyIds.Add(generated.CaseFamilyId);
run.RecentCaseFamilyIds = run.RecentCaseFamilyIds.TakeLast(30).ToList();