Added the Model Comparison assistant for blind comparisons of two models (#1009)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Assistants/ModelComparison/ModelComparisonPairCard.razor.cs

@@ -0,0 +1,66 @@
+using AIStudio.Components;
+
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// How two models did against each other, by the votes of the user and, when there are any, by the verdicts of the
+/// judges: as a chart, and as a table with the assessment.
+/// </summary>
+public partial class ModelComparisonPairCard : MSGComponentBase
+{
+    /// <summary>
+    /// Gets or sets the pair.
+    /// </summary>
+    [Parameter, EditorRequired]
+    public ModelComparisonPairing Pairing { get; set; } = null!;
+
+    /// <summary>
+    /// Gets or sets what the line below the names says, or null for the number of stored comparisons.
+    /// </summary>
+    [Parameter]
+    public string? Caption { get; set; }
+
+    /// <summary>
+    /// The tallies the chart shows: the votes of the user, and the verdicts of the judges when there are any.
+    /// </summary>
+    private IReadOnlyList<ModelComparisonTally> Tallies => this.Pairing.JudgeVerdicts.ScoredRunCount > 0
+        ? [this.Pairing.Votes, this.Pairing.JudgeVerdicts]
+        : [this.Pairing.Votes];
+
+    private string[] ChartLabels => this.Pairing.JudgeVerdicts.ScoredRunCount > 0
+        ? [TA("Your votes"), T("Judge verdicts")]
+        : [TA("Your votes")];
+
+    /// <summary>
+    /// The wins of the first model, the ties, and the wins of the second model, as the three series of a stacked bar
+    /// chart with one bar per tally, in the order of the columns of the table.
+    /// </summary>
+    private List<ChartSeries<double>> OutcomeSeries =>
+    [
+        new() { Name = this.Pairing.First.Label, Data = new([.. this.Tallies.Select(tally => (double)tally.FirstModelWins)]) },
+        new() { Name = T("Equally good"), Data = new([.. this.Tallies.Select(tally => (double)tally.Ties)]) },
+        new() { Name = this.Pairing.Second.Label, Data = new([.. this.Tallies.Select(tally => (double)tally.SecondModelWins)]) },
+    ];
+
+    private StackedBarChartOptions ChartOptions => new()
+    {
+        ChartPalette = ModelComparisonCharts.PAIR_PALETTE,
+        YAxisTicks = ModelComparisonCharts.AxisStep(this.Tallies.Select(tally => (double)(tally.FirstModelWins + tally.Ties + tally.SecondModelWins))),
+        YAxisToStringFunc = value => ((long)value).CompactCount(),
+    };
+
+    private string CaptionText => this.Caption ?? string.Format(ModelComparisonFormat.Culture, T("Stored comparisons: {0}"), this.Pairing.ComparisonCount.CompactCount());
+
+    /// <summary>
+    /// Says which model of the pair won clearly, if one did.
+    /// </summary>
+    /// <param name="winShareOfFirst">The share of wins of the first model, by the votes or by the judges.</param>
+    private string SignificanceText(ModelComparisonWinShare winShareOfFirst) => winShareOfFirst.Significance switch
+    {
+        ModelComparisonSignificance.CLEARLY_BETTER => string.Format(T("{0} is clearly better"), this.Pairing.First.Label),
+        ModelComparisonSignificance.CLEARLY_WORSE => string.Format(T("{0} is clearly better"), this.Pairing.Second.Label),
+        _ => T("Not yet clear"),
+    };
+}