feat(impression): project text search hits into active entities

Partner-Core/src/main/java/work/slhaf/partner/core/cognition/impression/ImpressionCore.java

@@ -3,6 +3,7 @@ package work.slhaf.partner.core.cognition.impression;
 import com.alibaba.fastjson2.JSONArray;
 import com.alibaba.fastjson2.JSONObject;
 import org.jetbrains.annotations.NotNull;
+import work.slhaf.partner.core.cognition.impression.search.*;
 import work.slhaf.partner.framework.agent.factory.capability.annotation.CapabilityCore;
 import work.slhaf.partner.framework.agent.factory.capability.annotation.CapabilityMethod;
 import work.slhaf.partner.framework.agent.state.State;
@@ -10,10 +11,9 @@ import work.slhaf.partner.framework.agent.state.StateSerializable;
 import work.slhaf.partner.framework.agent.state.StateValue;
 
 import java.nio.file.Path;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
 
 @CapabilityCore(value = "cognition")
 public class ImpressionCore implements StateSerializable {
@@ -23,6 +23,13 @@ public class ImpressionCore implements StateSerializable {
      */
     private final ConcurrentHashMap<String, Entity> knownEntitiesByUuid = new ConcurrentHashMap<>();
     private final ImpressionVectorIndex vectorIndex = new ImpressionVectorIndex();
+    private final Set<ActiveEntity> activeEntities = new HashSet<>();
+    private final ImpressionTextSearch textSearch = new SimpleTextSearch();
+
+    private static final int TEXT_SEARCH_LIMIT = 20;
+    private static final int ASSOCIATION_MATCH_LIMIT = 8;
+    private static final double SUPPORTING_HIT_FACTOR = 0.3;
+    private static final double ASSOCIATION_CONFIDENCE_DIVISOR = 5.0;
 
     @CapabilityMethod
     public void updateRelation() {
@@ -36,8 +43,169 @@ public class ImpressionCore implements StateSerializable {
     public void showImpressions() {
     }
 
+    /**
+     * 根据新的 Input 召回相关的实体，如果实体已重复，则将输入追加到 ActiveEntity 的证据中。
+     *
+     * @param input 本次输入内容
+     * @return 本次被召回的活跃实体（包括重复的实体）
+     */
     @CapabilityMethod
-    public void projectEntity(Set<ActiveEntity> activeEntities) {
+    public Set<ActiveEntity> projectEntity(String input) {
+        if (input == null || input.isBlank()) {
+            return Set.of();
+        }
+
+        List<ImpressionSearchHit> textSearchHits = textSearch.search(input, TEXT_SEARCH_LIMIT);
+        List<EntityAssociationMatch> associationMatches = aggregateMatches(textSearchHits, ASSOCIATION_MATCH_LIMIT);
+        if (associationMatches.isEmpty()) {
+            return Set.of();
+        }
+
+        Set<ActiveEntity> projected = new HashSet<>();
+        for (EntityAssociationMatch match : associationMatches) {
+            Optional<ActiveEntity> activeEntity = resolveActiveEntity(match.getTarget());
+            if (activeEntity.isEmpty()) {
+                continue;
+            }
+
+            ActiveEntity entity = activeEntity.get();
+            entity.addEvidence(
+                    input,
+                    associationConfidence(match),
+                    EntityEvidence.Source.USER_INPUT
+            );
+            refreshActiveEntityTextSearch(entity);
+            projected.add(entity);
+        }
+
+        return projected;
+    }
+
+    private List<EntityAssociationMatch> aggregateMatches(
+            List<ImpressionSearchHit> hits,
+            int limit
+    ) {
+        if (hits == null || hits.isEmpty() || limit <= 0) {
+            return List.of();
+        }
+
+        return hits.stream()
+                .collect(Collectors.groupingBy(
+                        hit -> hit.getDocument().getTarget(),
+                        LinkedHashMap::new,
+                        Collectors.toList()
+                ))
+                .entrySet()
+                .stream()
+                .map(entry -> {
+                    List<ImpressionSearchHit> sortedHits = entry.getValue()
+                            .stream()
+                            .sorted(Comparator
+                                    .comparingDouble(ImpressionSearchHit::getScore)
+                                    .reversed()
+                                    .thenComparing(hit -> hit.getDocument().getId()))
+                            .toList();
+                    return new EntityAssociationMatch(
+                            entry.getKey(),
+                            aggregateScore(sortedHits),
+                            sortedHits
+                    );
+                })
+                .sorted(Comparator
+                        .comparingDouble(EntityAssociationMatch::getScore)
+                        .reversed()
+                        .thenComparing(match -> match.getTarget().getType().name())
+                        .thenComparing(match -> match.getTarget().getId()))
+                .limit(limit)
+                .toList();
+    }
+
+    private double aggregateScore(List<ImpressionSearchHit> sortedHits) {
+        if (sortedHits.isEmpty()) {
+            return 0.0;
+        }
+
+        double bestHitScore = sortedHits.getFirst().getScore();
+        double supportingScore = sortedHits.stream()
+                .skip(1)
+                .limit(2)
+                .mapToDouble(hit -> hit.getScore() * SUPPORTING_HIT_FACTOR)
+                .sum();
+        return bestHitScore + supportingScore;
+    }
+
+    private Optional<ActiveEntity> resolveActiveEntity(ImpressionSearchTarget target) {
+        return switch (target.getType()) {
+            case ACTIVE_ENTITY -> findActiveEntityByRuntimeId(target.getId());
+            case ENTITY -> activateKnownEntity(target.getId());
+        };
+    }
+
+    private Optional<ActiveEntity> findActiveEntityByRuntimeId(String runtimeId) {
+        synchronized (activeEntities) {
+            return activeEntities.stream()
+                    .filter(activeEntity -> activeEntity.getRuntimeId().equals(runtimeId))
+                    .findFirst();
+        }
+    }
+
+    private Optional<ActiveEntity> findActiveEntityByBoundEntityUuid(String uuid) {
+        synchronized (activeEntities) {
+            return activeEntities.stream()
+                    .filter(activeEntity -> uuid.equals(activeEntity.getBoundEntityUuid()))
+                    .findFirst();
+        }
+    }
+
+    private Optional<ActiveEntity> activateKnownEntity(String uuid) {
+        Entity knownEntity = knownEntitiesByUuid.get(uuid);
+        if (knownEntity == null) {
+            return Optional.empty();
+        }
+
+        Optional<ActiveEntity> existing = findActiveEntityByBoundEntityUuid(uuid);
+        if (existing.isPresent()) {
+            return existing;
+        }
+
+        ActiveEntity activeEntity = new ActiveEntity();
+        activeEntity.updateSubject(knownEntity.getSubject());
+        activeEntity.bindEntity(uuid);
+
+        synchronized (activeEntities) {
+            activeEntities.add(activeEntity);
+        }
+        refreshActiveEntityTextSearch(activeEntity);
+        return Optional.of(activeEntity);
+    }
+
+    private double associationConfidence(EntityAssociationMatch match) {
+        double normalized = match.getScore() / ASSOCIATION_CONFIDENCE_DIVISOR;
+        return Math.clamp(normalized, 0.05, 1.0);
+    }
+
+    private void refreshActiveEntityTextSearch(ActiveEntity activeEntity) {
+        ImpressionSearchTarget target = new ImpressionSearchTarget(
+                ImpressionSearchTarget.Type.ACTIVE_ENTITY,
+                activeEntity.getRuntimeId()
+        );
+        textSearch.removeByTarget(target);
+        for (ImpressionSearchDocument document : ImpressionSearchDocuments.INSTANCE.fromActiveEntity(activeEntity)) {
+            textSearch.upsert(document);
+        }
+    }
+
+    private void rebuildTextSearch() {
+        List<ImpressionSearchDocument> documents = new ArrayList<>();
+        knownEntitiesByUuid.values().forEach(entity ->
+                documents.addAll(ImpressionSearchDocuments.INSTANCE.fromEntity(entity))
+        );
+        synchronized (activeEntities) {
+            activeEntities.forEach(activeEntity ->
+                    documents.addAll(ImpressionSearchDocuments.INSTANCE.fromActiveEntity(activeEntity))
+            );
+        }
+        textSearch.rebuild(documents);
     }
 
     @Override
@@ -70,9 +238,9 @@ public class ImpressionCore implements StateSerializable {
             vectorIndex.sync(entity);
             knownEntitiesByUuid.put(uuid, entity);
         }
+        rebuildTextSearch();
     }
 
-
     @Override
     public @NotNull State convert() {
         State state = new State();