optimize document loader

src/Knowledge/Retrieval/NdjsonHybridRetriever.php

@@ -18,15 +18,22 @@ final class NdjsonHybridRetriever implements RetrieverInterface
 {
     private const VECTOR_SCORE_THRESHOLD = 0.72;
 
+    // Guardrails
     private const HARD_MAX_CHUNKS = 90;
     private const HARD_MAX_VECTORK = 250;
 
-    private const LIST_BONUS = 1.5;
+    private const LIST_BONUS = 1.25;
 
+    // Selection / Fusion
     private const MAX_CHUNKS_PER_DOC = 2;
     private const MIN_CHUNK_DISTANCE = 2;
     private const RRF_K = 60;
 
+    // Hardening (nur Edge-Cases; Standardverhalten bleibt gleich)
+    private const THRESHOLD_FLOOR = 0.65;
+    private const THRESHOLD_CEIL = 0.90;
+    private const EMPTY_RRF_FALLBACK_TOPN = 5;
+
     public function __construct(
         private readonly NdjsonChunkLookup               $lookup,
         private readonly VectorSearchClient              $vectorClient,
@@ -66,10 +73,10 @@ final class NdjsonHybridRetriever implements RetrieverInterface
         $entityLabel = $this->catalogIntent->detect($prompt);
 
         // 2) Intent (regelbasiert)
-        $intent = (string)($this->salesIntentLite->detect($prompt)['intent'] ?? SalesIntentLite::DISCOVERY);
+        $salesIntent = $this->detectSalesIntent($prompt);
 
         // 3) Route bestimmen (Intent + Entity)
-        $route = $this->routeResolver->resolve($intent, $entityLabel);
+        $route = $this->routeResolver->resolve($salesIntent, $entityLabel);
 
         // 4) Early Exit nur für catalog_list
         if ($route === IntentRouteResolver::ROUTE_CATALOG_LIST && $entityLabel !== null) {
@@ -84,41 +91,30 @@ final class NdjsonHybridRetriever implements RetrieverInterface
         // NORMALER CORE
         // ------------------------------------------------------------
 
-        $core = $this->runCore($prompt, $config, false);
+        $core = $this->runCore($prompt, $config, false, $salesIntent);
 
         if ($core['ranked_chunk_ids'] === [] || $core['rows'] === []) {
             return [];
         }
 
-        // ✅ ORIGINAL: Normal Mode -> Sales optimized selection
         if (!$core['is_list_query']) {
-            return $this->collectSalesOptimized(
-                $core['ranked_chunk_ids'],
-                $core['rows'],
-                $core['limit']
-            );
+            $selectedIds = $this->selectSalesChunkIds($core['ranked_chunk_ids'], $core['rows'], $core['limit']);
+            return $this->collectTextsFromIds($selectedIds, $core['rows']);
         }
 
-        // ✅ ORIGINAL: List Mode -> simple collectTexts
-        return $this->collectTexts(
-            $core['ranked_chunk_ids'],
-            $core['rows'],
-            $core['limit']
-        );
+        $selectedIds = $this->selectListChunkIds($core['ranked_chunk_ids'], $core['rows'], $core['limit']);
+        return $this->collectTextsFromIds($selectedIds, $core['rows']);
     }
 
     // =========================================================
-    // DEBUG (unverändert, kein Early-Exit damit Debug immer Core zeigt)
+    // DEBUG (deterministisch: gleiche Intent-Bestimmung wie Prod)
     // =========================================================
 
     /**
-     * Gibt genau DIE Treffer zurück, die auch in Produktion ausgewählt werden,
-     * plus Scores/Meta pro ausgewähltem Chunk.
-     *
      * @return array<int, array{
      *   rank:int,
      *   chunk_id:string,
-     *   document_id: (string|null),
+     *   document_id:(string|null),
      *   raw_score:(float|null),
      *   rrf_score:(float|null),
      *   threshold:float,
@@ -135,15 +131,18 @@ final class NdjsonHybridRetriever implements RetrieverInterface
             throw new \RuntimeException('No active ModelGenerationConfig found.');
         }
 
-        $core = $this->runCore($prompt, $config, true);
+        $salesIntent = $this->detectSalesIntent($prompt);
+
+        // Debug zeigt Core ohne Early Exit, aber mit identischem Intent-Input.
+        $core = $this->runCore($prompt, $config, true, $salesIntent);
 
         if ($core['ranked_chunk_ids'] === [] || $core['rows'] === []) {
             return [];
         }
 
         $selectedChunkIds = $core['is_list_query']
-            ? $this->selectChunkIdsListMode($core['ranked_chunk_ids'], $core['rows'], $core['limit'])
-            : $this->selectChunkIdsSalesMode($core['ranked_chunk_ids'], $core['rows'], $core['limit']);
+            ? $this->selectListChunkIds($core['ranked_chunk_ids'], $core['rows'], $core['limit'])
+            : $this->selectSalesChunkIds($core['ranked_chunk_ids'], $core['rows'], $core['limit']);
 
         if ($selectedChunkIds === []) {
             return [];
@@ -162,7 +161,7 @@ final class NdjsonHybridRetriever implements RetrieverInterface
 
             $out[] = [
                 'rank' => $rank,
-                'chunk_id' => $chunkId,
+                'chunk_id' => (string)$chunkId,
                 'document_id' => isset($core['rows'][$chunkId]['document_id']) ? (string)$core['rows'][$chunkId]['document_id'] : null,
                 'raw_score' => isset($core['raw_scores'][$chunkId]) ? (float)$core['raw_scores'][$chunkId] : null,
                 'rrf_score' => isset($core['rrf_scores'][$chunkId]) ? (float)$core['rrf_scores'][$chunkId] : null,
@@ -177,7 +176,7 @@ final class NdjsonHybridRetriever implements RetrieverInterface
     }
 
     // =========================================================
-    // CORE PIPELINE (einmalig, shared)
+    // CORE PIPELINE
     // =========================================================
 
     /**
@@ -187,25 +186,109 @@ final class NdjsonHybridRetriever implements RetrieverInterface
      *   sales_intent:string,
      *   threshold:float,
      *   topk:int,
-     *   ranked_chunk_ids: string[],
-     *   rows: array<string, array<string,mixed>>,
-     *   rrf_scores: array<string,float>,
-     *   raw_scores: array<string,float>
+     *   ranked_chunk_ids:string[],
+     *   rows:array<string, array<string,mixed>>,
+     *   rrf_scores:array<string,float>,
+     *   raw_scores:array<string,float>
      * }
      */
-    private function runCore(string $prompt, ModelGenerationConfig $config, bool $withScores): array
-    {
+    private function runCore(
+        string $prompt,
+        ModelGenerationConfig $config,
+        bool $withScores,
+        string $salesIntent
+    ): array {
         $limit = max(1, min($config->getRetrievalMaxChunks(), self::HARD_MAX_CHUNKS));
         $vectorTopKBase = max(1, min($config->getRetrievalVectorTopK(), self::HARD_MAX_VECTORK));
 
         $isListQuery = $this->intentLite->isListQuery($prompt);
-        $salesIntent = $this->salesIntentLite->detect($prompt)['intent'];
 
         $cleanQuery = $this->queryCleaner->clean($prompt);
         if ($cleanQuery === '') {
             $cleanQuery = $prompt;
         }
 
+        [$threshold, $topK] = $this->computeThresholdAndTopK($salesIntent, $isListQuery, $vectorTopKBase);
+
+        // Candidate Routing (keine Set-Map nötig; scoped nur wenn IDs existieren)
+        $candidateDocIds = $this->tagRouting->route($cleanQuery);
+        $candidateDocIds = is_array($candidateDocIds) ? array_values(array_unique(array_filter($candidateDocIds, 'is_string'))) : [];
+
+        $globalHits = $this->vectorClient->search($cleanQuery, $topK);
+
+        $scopedHits = [];
+        if ($candidateDocIds !== []) {
+            $scopedHits = $this->vectorClient->searchScoped($cleanQuery, $topK, $candidateDocIds);
+        }
+
+        if ($globalHits === [] && $scopedHits === []) {
+            return [
+                'limit' => $limit,
+                'is_list_query' => $isListQuery,
+                'sales_intent' => $salesIntent,
+                'threshold' => $threshold,
+                'topk' => $topK,
+                'ranked_chunk_ids' => [],
+                'rows' => [],
+                'rrf_scores' => [],
+                'raw_scores' => [],
+            ];
+        }
+
+        $fused = $this->fuseHits(
+            $globalHits,
+            $scopedHits,
+            $threshold,
+            $salesIntent === SalesIntentLite::OBJECTION,
+            $withScores
+        );
+
+        $rrfScores = $fused['rrf_scores'];
+        $rawScores = $fused['raw_scores'];
+
+        // 🛡 Hardening: wenn Threshold alles rausfiltert, aber globale Hits existieren,
+        // nehmen wir Top-N als minimalen Kontext. Greift nur in Edge-Cases.
+        if ($rrfScores === [] && $globalHits !== []) {
+            $rrfScores = $this->fallbackRrfFromHits($globalHits, self::EMPTY_RRF_FALLBACK_TOPN);
+        }
+
+        if ($rrfScores === []) {
+            return [
+                'limit' => $limit,
+                'is_list_query' => $isListQuery,
+                'sales_intent' => $salesIntent,
+                'threshold' => $threshold,
+                'topk' => $topK,
+                'ranked_chunk_ids' => [],
+                'rows' => [],
+                'rrf_scores' => [],
+                'raw_scores' => $rawScores,
+            ];
+        }
+
+        arsort($rrfScores);
+        $rankedChunkIds = array_keys($rrfScores);
+
+        $rows = $this->lookup->findByChunkIds($rankedChunkIds);
+
+        return [
+            'limit' => $limit,
+            'is_list_query' => $isListQuery,
+            'sales_intent' => $salesIntent,
+            'threshold' => $threshold,
+            'topk' => $topK,
+            'ranked_chunk_ids' => $rankedChunkIds,
+            'rows' => $rows,
+            'rrf_scores' => $rrfScores,
+            'raw_scores' => $rawScores,
+        ];
+    }
+
+    /**
+     * @return array{0: float, 1: int} threshold, topK
+     */
+    private function computeThresholdAndTopK(string $salesIntent, bool $isListQuery, int $vectorTopKBase): array
+    {
         $threshold = self::VECTOR_SCORE_THRESHOLD;
         $topK = $vectorTopKBase;
 
@@ -242,88 +325,29 @@ final class NdjsonHybridRetriever implements RetrieverInterface
 
         $topK = max(1, min($topK, self::HARD_MAX_VECTORK));
 
-        $candidateDocIds = $this->tagRouting->route($cleanQuery);
-        $candidateSet = null;
+        // Enterprise clamp: verhindert Drift, ohne den aktuellen Normalfall zu ändern.
+        $threshold = max(self::THRESHOLD_FLOOR, min(self::THRESHOLD_CEIL, $threshold));
 
-        if (is_array($candidateDocIds) && $candidateDocIds !== []) {
-            $candidateSet = array_fill_keys($candidateDocIds, true);
-        }
-
-        $globalHits = $this->vectorClient->search($cleanQuery, $topK);
-
-        $scopedHits = [];
-        if ($candidateSet !== null) {
-            $scopedHits = $this->vectorClient->searchScoped($cleanQuery, $topK, array_keys($candidateSet));
-        }
-
-        if ($globalHits === [] && $scopedHits === []) {
-            return [
-                'limit' => $limit,
-                'is_list_query' => $isListQuery,
-                'sales_intent' => (string)$salesIntent,
-                'threshold' => $threshold,
-                'topk' => $topK,
-                'ranked_chunk_ids' => [],
-                'rows' => [],
-                'rrf_scores' => [],
-                'raw_scores' => [],
-            ];
+        return [$threshold, $topK];
     }
 
+    /**
+     * @return array{
+     *   rrf_scores: array<string,float>,
+     *   raw_scores: array<string,float>
+     * }
+     */
+    private function fuseHits(
+        array $globalHits,
+        array $scopedHits,
+        float $threshold,
+        bool $boostScoped,
+        bool $captureRaw
+    ): array {
         $rrfScores = [];
         $rawScores = [];
 
-        $this->applyRrfWithOptionalRaw($globalHits, $rrfScores, $rawScores, $threshold, false, $withScores);
-        $this->applyRrfWithOptionalRaw(
-            $scopedHits,
-            $rrfScores,
-            $rawScores,
-            $threshold,
-            $salesIntent === SalesIntentLite::OBJECTION,
-            $withScores
-        );
-
-        if ($rrfScores === []) {
-            return [
-                'limit' => $limit,
-                'is_list_query' => $isListQuery,
-                'sales_intent' => (string)$salesIntent,
-                'threshold' => $threshold,
-                'topk' => $topK,
-                'ranked_chunk_ids' => [],
-                'rows' => [],
-                'rrf_scores' => [],
-                'raw_scores' => $rawScores,
-            ];
-        }
-
-        arsort($rrfScores);
-        $rankedChunkIds = array_keys($rrfScores);
-
-        $rows = $this->lookup->findByChunkIds($rankedChunkIds);
-
-        return [
-            'limit' => $limit,
-            'is_list_query' => $isListQuery,
-            'sales_intent' => (string)$salesIntent,
-            'threshold' => $threshold,
-            'topk' => $topK,
-            'ranked_chunk_ids' => $rankedChunkIds,
-            'rows' => $rows,
-            'rrf_scores' => $rrfScores,
-            'raw_scores' => $rawScores,
-        ];
-    }
-
-    private function applyRrfWithOptionalRaw(
-        array $hits,
-        array &$rrfScores,
-        array &$rawScores,
-        float $threshold,
-        bool  $boost = false,
-        bool  $captureRaw = false
-    ): void
-    {
+        $apply = function (array $hits, bool $boost) use (&$rrfScores, &$rawScores, $threshold, $captureRaw): void {
             $rank = 0;
 
             foreach ($hits as $hit) {
@@ -339,27 +363,68 @@ final class NdjsonHybridRetriever implements RetrieverInterface
                 $chunkId = (string)$hit['chunk_id'];
 
                 if ($captureRaw) {
-                if (!isset($rawScores[$chunkId]) || $raw > $rawScores[$chunkId]) {
-                    $rawScores[$chunkId] = $raw;
-                }
+                    $rawScores[$chunkId] = max($rawScores[$chunkId] ?? 0.0, $raw);
                 }
 
                 $rank++;
-            $rrf = 1 / (self::RRF_K + $rank);
+                $rrf = 1.0 / (self::RRF_K + $rank);
 
                 if ($boost) {
                     $rrf *= 1.2;
                 }
 
-            if (!isset($rrfScores[$chunkId])) {
-                $rrfScores[$chunkId] = 0.0;
+                $rrfScores[$chunkId] = ($rrfScores[$chunkId] ?? 0.0) + $rrf;
+            }
+        };
+
+        $apply($globalHits, false);
+        $apply($scopedHits, $boostScoped);
+
+        return [
+            'rrf_scores' => $rrfScores,
+            'raw_scores' => $rawScores,
+        ];
     }
 
-            $rrfScores[$chunkId] += $rrf;
+    /**
+     * Minimaler Fallback: baut RRF nur aus der Reihenfolge (ohne Threshold),
+     * damit Edge-Cases nicht leer laufen.
+     *
+     * @return array<string,float>
+     */
+    private function fallbackRrfFromHits(array $hits, int $topN): array
+    {
+        $rrf = [];
+        $rank = 0;
+
+        foreach ($hits as $hit) {
+            if (!isset($hit['chunk_id'])) {
+                continue;
+            }
+
+            $rank++;
+            $chunkId = (string)$hit['chunk_id'];
+            $rrf[$chunkId] = 1.0 / (self::RRF_K + $rank);
+
+            if ($rank >= $topN) {
+                break;
             }
         }
 
-    private function selectChunkIdsListMode(array $chunkIds, array $rows, int $limit): array
+        return $rrf;
+    }
+
+    private function detectSalesIntent(string $prompt): string
+    {
+        $data = $this->salesIntentLite->detect($prompt);
+        return (string)($data['intent'] ?? SalesIntentLite::DISCOVERY);
+    }
+
+    // =========================================================
+    // SELECTION (shared)
+    // =========================================================
+
+    private function selectListChunkIds(array $chunkIds, array $rows, int $limit): array
     {
         $seen = [];
         $out = [];
@@ -374,7 +439,8 @@ final class NdjsonHybridRetriever implements RetrieverInterface
                 continue;
             }
 
-            $key = mb_strtolower((string)preg_replace('/\s+/u', ' ', $chunk));
+            // Dedupe Key (billig & stabil)
+            $key = md5(mb_strtolower((string)preg_replace('/\s+/u', ' ', $chunk)));
 
             if (isset($seen[$key])) {
                 continue;
@@ -391,7 +457,7 @@ final class NdjsonHybridRetriever implements RetrieverInterface
         return $out;
     }
 
-    private function selectChunkIdsSalesMode(array $chunkIds, array $rows, int $limit): array
+    private function selectSalesChunkIds(array $chunkIds, array $rows, int $limit): array
     {
         $out = [];
         $docCounter = [];
@@ -439,88 +505,12 @@ final class NdjsonHybridRetriever implements RetrieverInterface
         return $out;
     }
 
-    private function applyRrf(array $hits, array &$rrfScores, float $threshold, bool $boost = false): void
+    // =========================================================
+    // COLLECT (shared)
+    // =========================================================
+
+    private function collectTextsFromIds(array $chunkIds, array $rows): array
     {
-        $rank = 0;
-
-        foreach ($hits as $hit) {
-            if (!isset($hit['chunk_id'], $hit['score'])) {
-                continue;
-            }
-
-            $raw = (float)$hit['score'];
-            if ($raw < $threshold) {
-                continue;
-            }
-
-            $chunkId = (string)$hit['chunk_id'];
-
-            $rank++;
-            $rrf = 1 / (self::RRF_K + $rank);
-
-            if ($boost) {
-                $rrf *= 1.2;
-            }
-
-            if (!isset($rrfScores[$chunkId])) {
-                $rrfScores[$chunkId] = 0.0;
-            }
-
-            $rrfScores[$chunkId] += $rrf;
-        }
-    }
-
-    private function collectSalesOptimized(array $chunkIds, array $rows, int $limit): array
-    {
-        $out = [];
-        $docCounter = [];
-        $docChunkPositions = [];
-
-        foreach ($chunkIds as $chunkId) {
-            if (!isset($rows[$chunkId]['text'])) {
-                continue;
-            }
-
-            $docId = $rows[$chunkId]['document_id'] ?? null;
-            $chunkIndex = $rows[$chunkId]['chunk_index'] ?? null;
-
-            if (!is_string($docId)) {
-                continue;
-            }
-
-            if (($docCounter[$docId] ?? 0) >= self::MAX_CHUNKS_PER_DOC) {
-                continue;
-            }
-
-            if (is_int($chunkIndex)) {
-                $prev = $docChunkPositions[$docId] ?? [];
-                foreach ($prev as $prevIdx) {
-                    if (abs($prevIdx - $chunkIndex) < self::MIN_CHUNK_DISTANCE) {
-                        continue 2;
-                    }
-                }
-                $docChunkPositions[$docId][] = $chunkIndex;
-            }
-
-            $text = trim((string)$rows[$chunkId]['text']);
-            if ($text === '') {
-                continue;
-            }
-
-            $out[] = $text;
-            $docCounter[$docId] = ($docCounter[$docId] ?? 0) + 1;
-
-            if (\count($out) >= $limit) {
-                break;
-            }
-        }
-
-        return $out;
-    }
-
-    private function collectTexts(array $chunkIds, array $rows, int $limit): array
-    {
-        $seen = [];
         $out = [];
 
         foreach ($chunkIds as $id) {
@@ -528,23 +518,12 @@ final class NdjsonHybridRetriever implements RetrieverInterface
                 continue;
             }
 
-            $chunk = trim((string)$rows[$id]['text']);
-            if ($chunk === '') {
+            $text = trim((string)$rows[$id]['text']);
+            if ($text === '') {
                 continue;
             }
 
-            $key = mb_strtolower((string)preg_replace('/\s+/u', ' ', $chunk));
-
-            if (isset($seen[$key])) {
-                continue;
-            }
-
-            $seen[$key] = true;
-            $out[] = $chunk;
-
-            if (\count($out) >= $limit) {
-                break;
-            }
+            $out[] = $text;
         }
 
         return $out;