Merge pull request #587 from khoj-ai/features/search-model-options-custom

Support multiple search models, with ability for custom user config

pyproject.toml

@@ -66,7 +66,7 @@ dependencies = [
     "gpt4all >= 2.0.0; platform_system == 'Windows' or platform_system == 'Darwin'",
     "itsdangerous == 2.1.2",
     "httpx == 0.25.0",
-    "pgvector == 0.2.3",
+    "pgvector == 0.2.4",
     "psycopg2-binary == 2.9.9",
     "google-auth == 2.23.3",
     "python-multipart == 0.0.6",

src/khoj/configure.py

@@ -25,7 +25,7 @@ from khoj.database.models import KhojUser, Subscription
 from khoj.database.adapters import (
     ConversationAdapters,
     get_all_users,
-    get_or_create_search_model,
+    get_or_create_search_models,
     aget_user_subscription_state,
     SubscriptionState,
 )
@@ -146,8 +146,14 @@ def configure_server(
 
     # Initialize Search Models from Config and initialize content
     try:
-        state.embeddings_model = EmbeddingsModel(get_or_create_search_model().bi_encoder)
+        search_models = get_or_create_search_models()
-        state.cross_encoder_model = CrossEncoderModel(get_or_create_search_model().cross_encoder)
+        state.embeddings_model = dict()
+        state.cross_encoder_model = dict()
+
+        for model in search_models:
+            state.embeddings_model.update({model.name: EmbeddingsModel(model.bi_encoder)})
+            state.cross_encoder_model.update({model.name: CrossEncoderModel(model.cross_encoder)})
+
         state.SearchType = configure_search_types()
         state.search_models = configure_search(state.search_models, state.config.search_type)
         initialize_content(regenerate, search_type, init, user)

src/khoj/database/adapters/__init__.py

@@ -32,6 +32,7 @@ from khoj.database.models import (
     SpeechToTextModelOptions,
     Subscription,
     UserConversationConfig,
+    UserSearchModelConfig,
     OpenAIProcessorConversationConfig,
     OfflineChatProcessorConversationConfig,
     ReflectiveQuestion,
@@ -250,12 +251,33 @@ async def set_user_github_config(user: KhojUser, pat_token: str, repos: list):
     return config
 
 
-def get_or_create_search_model():
+def get_user_search_model_or_default(user=None):
-    search_model = SearchModelConfig.objects.filter().first()
+    if user and UserSearchModelConfig.objects.filter(user=user).exists():
-    if not search_model:
+        return UserSearchModelConfig.objects.filter(user=user).first().setting
-        search_model = SearchModelConfig.objects.create()
 
-    return search_model
+    if SearchModelConfig.objects.filter(name="default").exists():
+        return SearchModelConfig.objects.filter(name="default").first()
+    else:
+        SearchModelConfig.objects.create()
+
+    return SearchModelConfig.objects.first()
+
+
+def get_or_create_search_models():
+    search_models = SearchModelConfig.objects.all()
+    if search_models.count() == 0:
+        SearchModelConfig.objects.create()
+        search_models = SearchModelConfig.objects.all()
+
+    return search_models
+
+
+async def aset_user_search_model(user: KhojUser, search_model_config_id: int):
+    config = await SearchModelConfig.objects.filter(id=search_model_config_id).afirst()
+    if not config:
+        return None
+    new_config, _ = await UserSearchModelConfig.objects.aupdate_or_create(user=user, defaults={"setting": config})
+    return new_config
 
 
 class ConversationAdapters:

src/khoj/database/admin.py

@@ -16,6 +16,7 @@ from khoj.database.models import (
     SpeechToTextModelOptions,
     Subscription,
     ReflectiveQuestion,
+    UserSearchModelConfig,
     TextToImageModelConfig,
     Conversation,
 )
@@ -29,6 +30,7 @@ admin.site.register(OfflineChatProcessorConversationConfig)
 admin.site.register(SearchModelConfig)
 admin.site.register(Subscription)
 admin.site.register(ReflectiveQuestion)
+admin.site.register(UserSearchModelConfig)
 admin.site.register(TextToImageModelConfig)
 
 

src/khoj/database/migrations/0023_usersearchmodelconfig.py

@@ -0,0 +1,33 @@
+# Generated by Django 4.2.7 on 2023-12-19 15:44
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("database", "0022_texttoimagemodelconfig"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="UserSearchModelConfig",
+            fields=[
+                ("id", models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "setting",
+                    models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to="database.searchmodelconfig"),
+                ),
+                (
+                    "user",
+                    models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+                ),
+            ],
+            options={
+                "abstract": False,
+            },
+        ),
+    ]

src/khoj/database/migrations/0024_alter_entry_embeddings.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.7 on 2023-12-20 07:27
+
+from django.db import migrations
+import pgvector.django
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("database", "0023_usersearchmodelconfig"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="entry",
+            name="embeddings",
+            field=pgvector.django.VectorField(),
+        ),
+    ]

src/khoj/database/models/__init__.py

@@ -153,6 +153,11 @@ class UserConversationConfig(BaseModel):
     setting = models.ForeignKey(ChatModelOptions, on_delete=models.CASCADE, default=None, null=True, blank=True)
 
 
+class UserSearchModelConfig(BaseModel):
+    user = models.OneToOneField(KhojUser, on_delete=models.CASCADE)
+    setting = models.ForeignKey(SearchModelConfig, on_delete=models.CASCADE)
+
+
 class Conversation(BaseModel):
     user = models.ForeignKey(KhojUser, on_delete=models.CASCADE)
     conversation_log = models.JSONField(default=dict)
@@ -180,7 +185,7 @@ class Entry(BaseModel):
         GITHUB = "github"
 
     user = models.ForeignKey(KhojUser, on_delete=models.CASCADE, default=None, null=True, blank=True)
-    embeddings = VectorField(dimensions=384)
+    embeddings = VectorField(dimensions=None)
     raw = models.TextField()
     compiled = models.TextField()
     heading = models.CharField(max_length=1000, default=None, null=True, blank=True)

src/khoj/interface/web/assets/icons/web.svg

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?><!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<svg width="800px" height="800px" viewBox="0 0 64 64" xmlns="http://www.w3.org/2000/svg" stroke-width="3" stroke="#000000" fill="none"><circle cx="34.52" cy="11.43" r="5.82"/><circle cx="53.63" cy="31.6" r="5.82"/><circle cx="34.52" cy="50.57" r="5.82"/><circle cx="15.16" cy="42.03" r="5.82"/><circle cx="15.16" cy="19.27" r="5.82"/><circle cx="34.51" cy="29.27" r="4.7"/><line x1="20.17" y1="16.3" x2="28.9" y2="12.93"/><line x1="38.6" y1="15.59" x2="49.48" y2="27.52"/><line x1="50.07" y1="36.2" x2="38.67" y2="46.49"/><line x1="18.36" y1="24.13" x2="30.91" y2="46.01"/><line x1="20.31" y1="44.74" x2="28.7" y2="48.63"/><line x1="17.34" y1="36.63" x2="31.37" y2="16.32"/><line x1="20.52" y1="21.55" x2="30.34" y2="27.1"/><line x1="39.22" y1="29.8" x2="47.81" y2="30.45"/><line x1="34.51" y1="33.98" x2="34.52" y2="44.74"/></svg>

src/khoj/interface/web/base_config.html

@@ -296,6 +296,21 @@
             height: 32px;
         }
 
+        div#notification-banner {
+            background-color: var(--primary);
+            border: 1px solid var(--primary-hover);
+            padding: 8px;
+            box-shadow: 0px 1px 3px 0px rgba(0,0,0,0.1),0px 1px 2px -1px rgba(0,0,0,0.8);
+        }
+
+        div#notification-banner-parent {
+            position: fixed;
+            right: 0;
+            bottom: 0;
+            margin: 20px;
+        }
+
+        select#search-models,
         select#chat-models {
             margin-bottom: 0;
             padding: 8px;

src/khoj/interface/web/chat.html

@@ -16,6 +16,9 @@ Hi, I am Khoj, your open, personal AI 👋🏽. I can help:
 - 🧠 Answer general knowledge questions
 - 💡 Be a sounding board for your ideas
 - 📜 Chat with your notes & documents
+- 🌄 Generate images based on your messages
+- 🔎 Search the web for answers to your questions
+- 🎙️ Listen to your audio messages
 
 Get the Khoj [Desktop](https://khoj.dev/downloads), [Obsidian](https://docs.khoj.dev/#/obsidian?id=setup) or [Emacs](https://docs.khoj.dev/#/emacs?id=setup) app to search, chat with your 🖥️ computer docs.
 

src/khoj/interface/web/config.html

@@ -107,6 +107,26 @@
                     </div>
                 </div>
             </div>
+            <div class="card">
+                <div class="card-title-row">
+                    <img class="card-icon" src="/static/assets/icons/web.svg" alt="Language">
+                    <h3 class="card-title">
+                        Language
+                    </h3>
+                </div>
+                <div class="card-description-row">
+                    <select id="search-models">
+                        {% for option in search_model_options %}
+                            <option value="{{ option.id }}" {% if option.id == selected_search_model_config %}selected{% endif %}>{{ option.name }}</option>
+                        {% endfor %}
+                    </select>
+                </div>
+                <div class="card-action-row">
+                    <button id="save-search-model" class="card-button happy" onclick="updateSearchModel()">
+                        Save
+                    </button>
+                </div>
+            </div>
         </div>
         <div class="general-settings section">
             <div id="status" style="display: none;"></div>
@@ -239,6 +259,10 @@
     </div>
     {% endif %}
     <div class="section"></div>
+    </div>
+    <div class="section" id="notification-banner-parent">
+        <div id="notification-banner"></div>
+    </div>
 </div>
 <script>
 
@@ -266,6 +290,37 @@
         })
     };
 
+    function updateSearchModel() {
+        const searchModel = document.getElementById("search-models").value;
+        const saveSearchModelButton = document.getElementById("save-search-model");
+        saveSearchModelButton.disabled = true;
+        saveSearchModelButton.innerHTML = "Saving...";
+
+        fetch('/api/config/data/search/model?id=' + searchModel, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            }
+        })
+        .then(response => response.json())
+        .then(data => {
+            if (data.status == "ok") {
+                saveSearchModelButton.innerHTML = "Save";
+                saveSearchModelButton.disabled = false;
+            } else {
+                saveSearchModelButton.innerHTML = "Error";
+                saveSearchModelButton.disabled = false;
+            }
+
+            let notificationBanner = document.getElementById("notification-banner");
+            notificationBanner.innerHTML = "When updating the language model, be sure to delete all your saved content and re-initialize.";
+            notificationBanner.style.display = "block";
+            setTimeout(function() {
+                notificationBanner.style.display = "none";
+            }, 5000);
+        })
+    };
+
     function clearContentType(content_source) {
         fetch('/api/config/data/content-source/' + content_source, {
             method: 'DELETE',

src/khoj/processor/content/text_to_entries.py

@@ -14,7 +14,7 @@ from khoj.utils.helpers import is_none_or_empty, timer, batcher
 from khoj.utils.rawconfig import Entry
 from khoj.search_filter.date_filter import DateFilter
 from khoj.database.models import KhojUser, Entry as DbEntry, EntryDates
-from khoj.database.adapters import EntryAdapters
+from khoj.database.adapters import EntryAdapters, get_user_search_model_or_default
 
 
 logger = logging.getLogger(__name__)
@@ -112,7 +112,8 @@ class TextToEntries(ABC):
         with timer("Generated embeddings for entries to add to database in", logger):
             entries_to_process = [hash_to_current_entries[hashed_val] for hashed_val in hashes_to_process]
             data_to_embed = [getattr(entry, key) for entry in entries_to_process]
-            embeddings += self.embeddings_model.embed_documents(data_to_embed)
+            model = get_user_search_model_or_default(user)
+            embeddings += self.embeddings_model[model.name].embed_documents(data_to_embed)
 
         added_entries: list[DbEntry] = []
         with timer("Added entries to database in", logger):

src/khoj/routers/api.py

@@ -18,7 +18,7 @@ from starlette.authentication import requires
 # Internal Packages
 from khoj.configure import configure_server
 from khoj.database import adapters
-from khoj.database.adapters import ConversationAdapters, EntryAdapters
+from khoj.database.adapters import ConversationAdapters, EntryAdapters, get_user_search_model_or_default
 from khoj.database.models import ChatModelOptions, SpeechToTextModelOptions
 from khoj.database.models import Entry as DbEntry
 from khoj.database.models import (
@@ -332,6 +332,31 @@ async def update_chat_model(
     return {"status": "ok"}
 
 
+@api.post("/config/data/search/model", status_code=200)
+@requires(["authenticated"])
+async def update_search_model(
+    request: Request,
+    id: str,
+    client: Optional[str] = None,
+):
+    user = request.user.object
+
+    new_config = await adapters.aset_user_search_model(user, int(id))
+
+    if new_config is None:
+        return {"status": "error", "message": "Model not found"}
+    else:
+        update_telemetry_state(
+            request=request,
+            telemetry_type="api",
+            api="set_search_model",
+            client=client,
+            metadata={"search_model": new_config.setting.name},
+        )
+
+    return {"status": "ok"}
+
+
 # Create Routes
 @api.get("/config/data/default")
 def get_default_config_data():
@@ -410,13 +435,10 @@ async def search(
         defiltered_query = filter.defilter(defiltered_query)
 
     encoded_asymmetric_query = None
-    if t == SearchType.All or t != SearchType.Image:
+    if t != SearchType.Image:
-        text_search_models: List[TextSearchModel] = [
-            model for model in state.search_models.__dict__.values() if isinstance(model, TextSearchModel)
-        ]
-        if text_search_models:
         with timer("Encoding query took", logger=logger):
-                encoded_asymmetric_query = state.embeddings_model.embed_query(defiltered_query)
+            search_model = await sync_to_async(get_user_search_model_or_default)(user)
+            encoded_asymmetric_query = state.embeddings_model[search_model.name].embed_query(defiltered_query)
 
     with concurrent.futures.ThreadPoolExecutor() as executor:
         if t in [
@@ -472,9 +494,9 @@ async def search(
                     results += text_search.collate_results(hits, dedupe=dedupe)
 
                     # Sort results across all content types and take top results
-                results = text_search.rerank_and_sort_results(results, query=defiltered_query, rank_results=r)[
+                    results = text_search.rerank_and_sort_results(
-                    :results_count
+                        results, query=defiltered_query, rank_results=r, search_model_name=search_model.name
-                ]
+                    )[:results_count]
 
     # Cache results
     if user:

src/khoj/routers/indexer.py

@@ -143,6 +143,13 @@ async def update(
         )
         return Response(content="Failed", status_code=500)
 
+    indexing_metadata = {
+        "num_org": len(org_files),
+        "num_markdown": len(markdown_files),
+        "num_pdf": len(pdf_files),
+        "num_plaintext": len(plaintext_files),
+    }
+
     update_telemetry_state(
         request=request,
         telemetry_type="api",
@@ -151,6 +158,7 @@ async def update(
         user_agent=user_agent,
         referer=referer,
         host=host,
+        metadata=indexing_metadata,
     )
 
     logger.info(f"📪 Content index updated via API call by {client} client")

src/khoj/routers/web_client.py

@@ -155,6 +155,11 @@ def config_page(request: Request):
     for conversation_option in conversation_options:
         all_conversation_options.append({"chat_model": conversation_option.chat_model, "id": conversation_option.id})
 
+    search_model_options = adapters.get_or_create_search_models().all()
+    all_search_model_options = list()
+    for search_model_option in search_model_options:
+        all_search_model_options.append({"name": search_model_option.name, "id": search_model_option.id})
+
     return templates.TemplateResponse(
         "config.html",
         context={
@@ -163,6 +168,7 @@ def config_page(request: Request):
             "anonymous_mode": state.anonymous_mode,
             "username": user.username,
             "conversation_options": all_conversation_options,
+            "search_model_options": all_search_model_options,
             "selected_conversation_config": selected_conversation_config.id if selected_conversation_config else None,
             "user_photo": user_picture,
             "billing_enabled": state.billing_enabled,

src/khoj/search_type/text_search.py

@@ -19,7 +19,7 @@ from khoj.utils.state import SearchType
 from khoj.utils.rawconfig import SearchResponse, Entry
 from khoj.utils.jsonl import load_jsonl
 from khoj.processor.content.text_to_entries import TextToEntries
-from khoj.database.adapters import EntryAdapters
+from khoj.database.adapters import EntryAdapters, get_user_search_model_or_default
 from khoj.database.models import KhojUser, Entry as DbEntry
 
 logger = logging.getLogger(__name__)
@@ -115,7 +115,8 @@ async def query(
     # Encode the query using the bi-encoder
     if question_embedding is None:
         with timer("Query Encode Time", logger, state.device):
-            question_embedding = state.embeddings_model.embed_query(query)
+            search_model = await sync_to_async(get_user_search_model_or_default)(user)
+            question_embedding = state.embeddings_model[search_model.name].embed_query(query)
 
     # Find relevant entries for the query
     top_k = 10
@@ -179,13 +180,13 @@ def deduplicated_search_responses(hits: List[SearchResponse]):
             )
 
 
-def rerank_and_sort_results(hits, query, rank_results):
+def rerank_and_sort_results(hits, query, rank_results, search_model_name):
     # If we have more than one result and reranking is enabled
     rank_results = rank_results and len(list(hits)) > 1
 
     # Score all retrieved entries using the cross-encoder
     if rank_results:
-        hits = cross_encoder_score(query, hits)
+        hits = cross_encoder_score(query, hits, search_model_name)
 
     # Sort results by cross-encoder score followed by bi-encoder score
     hits = sort_results(rank_results=rank_results, hits=hits)
@@ -218,10 +219,10 @@ def setup(
         )
 
 
-def cross_encoder_score(query: str, hits: List[SearchResponse]) -> List[SearchResponse]:
+def cross_encoder_score(query: str, hits: List[SearchResponse], search_model_name: str) -> List[SearchResponse]:
     """Score all retrieved entries using the cross-encoder"""
     with timer("Cross-Encoder Predict Time", logger, state.device):
-        cross_scores = state.cross_encoder_model.predict(query, hits)
+        cross_scores = state.cross_encoder_model[search_model_name].predict(query, hits)
 
     # Convert cross-encoder scores to distances and pass in hits for reranking
     for idx in range(len(cross_scores)):

src/khoj/utils/state.py

@@ -19,8 +19,8 @@ from khoj.utils.rawconfig import FullConfig
 # Application Global State
 config = FullConfig()
 search_models = SearchModels()
-embeddings_model: EmbeddingsModel = None
+embeddings_model: Dict[str, EmbeddingsModel] = None
-cross_encoder_model: CrossEncoderModel = None
+cross_encoder_model: Dict[str, CrossEncoderModel] = None
 content_index = ContentIndex()
 openai_client: OpenAI = None
 gpt4all_processor_config: GPT4AllProcessorModel = None

tests/conftest.py

@@ -45,8 +45,10 @@ def enable_db_access_for_all_tests(db):
 
 @pytest.fixture(scope="session")
 def search_config() -> SearchConfig:
-    state.embeddings_model = EmbeddingsModel()
+    state.embeddings_model = dict()
-    state.cross_encoder_model = CrossEncoderModel()
+    state.embeddings_model["default"] = EmbeddingsModel()
+    state.cross_encoder_model = dict()
+    state.cross_encoder_model["default"] = CrossEncoderModel()
 
     model_dir = resolve_absolute_path("~/.khoj/search")
     model_dir.mkdir(parents=True, exist_ok=True)
@@ -317,8 +319,10 @@ def client(
     state.config.content_type = content_config
     state.config.search_type = search_config
     state.SearchType = configure_search_types()
-    state.embeddings_model = EmbeddingsModel()
+    state.embeddings_model = dict()
-    state.cross_encoder_model = CrossEncoderModel()
+    state.embeddings_model["default"] = EmbeddingsModel()
+    state.cross_encoder_model = dict()
+    state.cross_encoder_model["default"] = CrossEncoderModel()
 
     # These lines help us Mock the Search models for these search types
     state.search_models.image_search = image_search.initialize_model(search_config.image)