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README.md

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+---
+license: cc-by-nc-sa-4.0
+tags:
+  - web-privacy
+  - tracker-detection
+  - entity-attribution
+  - feedforward
+  - safetensors
+  - webassembly
+datasets:
+  - olafuraron/tracker-radar-ml
+---
+
+# Tracking Entity Classifier
+
+Predicts which company owns a third-party tracking domain based on behavioral patterns from DuckDuckGo's [Tracker Radar](https://github.com/duckduckgo/tracker-radar) dataset. No ownership metadata is used as input — the model learns to identify entities from API usage, cookie behavior, resource types, and prevalence patterns.
+
+## Labels
+
+13 tracking-related entities:
+
+Adobe Inc., ByteDance Ltd., Comcast Corporation, Conversant LLC, Google LLC, HubSpot Inc., Impact, Leven Labs Inc. DBA Admiral, Microsoft Corporation, Oracle Corporation, Salesforce.com Inc., Yahoo Inc., Yandex LLC
+
+## Performance
+
+- **Accuracy:** 58.5%
+- **Weighted F1:** 0.604
+- **Training data:** 731 domains from Tracker Radar US region
+- **Features:** 164 behavioral features
+
+Strong per-entity results for distinctive entities: Leven Labs (F1 0.93), Google (F1 0.75), Microsoft (F1 0.65). Less reliable for smaller entities with few training samples.
+
+## Architecture
+
+Feedforward neural network: 164 → 128 → 64 → 13 with ReLU activations and dropout (0.2). Model size: 118.5 KB.
+
+Designed for on-device inference via [Kjarni](https://github.com/olafurjohannsson/kjarni) WebAssembly runtime with SIMD128 acceleration.
+
+## Usage
+
+Features must be standardized using the provided scaler (mean and scale in `tracking_entity_classifier_scaler.json`) before inference. This model is most meaningful when applied to domains already identified as ad tech by the [entity cluster classifier](https://huggingface.co/olafuraron/entity-cluster-classifier).
+
+## Context
+
+This model demonstrates that tracking companies have identifiable behavioral fingerprints — their domains exhibit characteristic patterns of API usage, cookie behavior, and web presence that distinguish them from other entities. See [TrackerML](https://github.com/olafurjohannsson/tracker-ml) for the full project.
+
+## License
+
+CC-BY-NC-SA 4.0 (derived from DuckDuckGo Tracker Radar).

tracking_entity_classifier.safetensors

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+version https://git-lfs.github.com/spec/v1
+oid sha256:6e5fd548a9c98feb5ca4ec18760aa32410a5598853338bf419b9ff05a286f6d2
+size 121348

tracking_entity_classifier_config.json

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+{
+  "input_dim": 164,
+  "hidden_dim": 128,
+  "output_dim": 13,
+  "labels": [
+    "Adobe Inc.",
+    "ByteDance Ltd.",
+    "Comcast Corporation",
+    "Conversant LLC",
+    "Google LLC",
+    "HubSpot, Inc.",
+    "Impact",
+    "Leven Labs, Inc. DBA Admiral",
+    "Microsoft Corporation",
+    "Oracle Corporation",
+    "Salesforce.com, Inc.",
+    "Yahoo Inc.",
+    "Yandex LLC"
+  ],
+  "accuracy": 0.5846994535519126,
+  "top5_accuracy": 0.8415300546448088,
+  "weighted_f1": 0.6036854240453027
+}

tracking_entity_classifier_scaler.json

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"api_AudioBuffer_prototype_getChannelData", "api_AudioWorkletNode_prototype_constructor", "api_BarProp_prototype_visible", "api_BroadcastChannel_prototype_constructor", "api_CSSStyleDeclaration_setPropertyfontFamily\u2026", "api_CanvasRenderingContext2D_prototype_getImageData", "api_CanvasRenderingContext2D_prototype_isPointInPath", "api_CanvasRenderingContext2D_prototype_measureText", "api_CookieStore_prototype_get", "api_CookieStore_prototype_getAll", "api_CookieStore_prototype_set", "api_Date_prototype_getTime", "api_Date_prototype_getTimezoneOffset", "api_DeviceMotionEvent_prototype_acceleration", "api_DeviceMotionEvent_prototype_accelerationIncludingGravity", "api_DeviceMotionEvent_prototype_rotationRate", "api_DeviceOrientationEvent_prototype_absolute", "api_DeviceOrientationEvent_prototype_alpha", "api_DeviceOrientationEvent_prototype_beta", "api_DeviceOrientationEvent_prototype_gamma", "api_Document_cookie_getter", "api_Document_cookie_setter", "api_Document_prototype_interestCohort", "api_Element_prototype_getClientRects", "api_Event_prototype_timeStamp", "api_Gyroscope_prototype_constructor", "api_Gyroscope_prototype_x", "api_Gyroscope_prototype_y", "api_Gyroscope_prototype_z", "api_HTMLCanvasElement_prototype_toBlob", "api_HTMLCanvasElement_prototype_toDataURL", "api_HTMLMediaElement_prototype_canPlayType", "api_Intl_DateTimeFormat_prototype_resolvedOptions", "api_KeyboardEvent_prototype_code", "api_KeyboardEvent_prototype_keyCode", "api_MediaDevices_prototype_enumerateDevices", "api_MediaSource_isTypeSupported", "api_Navigator_prototype_appCodeName", "api_Navigator_prototype_appName", "api_Navigator_prototype_appVersion", "api_Navigator_prototype_connection", "api_Navigator_prototype_cookieEnabled", "api_Navigator_prototype_deviceMemory", "api_Navigator_prototype_doNotTrack", "api_Navigator_prototype_getBattery", "api_Navigator_prototype_getGamepads", "api_Navigator_prototype_hardwareConcurrency", "api_Navigator_prototype_javaEnabled", "api_Navigator_prototype_keyboard", "api_Navigator_prototype_language", "api_Navigator_prototype_languages", "api_Navigator_prototype_maxTouchPoints", "api_Navigator_prototype_mediaCapabilities", "api_Navigator_prototype_mediaDevices", "api_Navigator_prototype_mimeTypes", "api_Navigator_prototype_onLine", "api_Navigator_prototype_permissions", "api_Navigator_prototype_platform", "api_Navigator_prototype_plugins", "api_Navigator_prototype_presentation", "api_Navigator_prototype_product", "api_Navigator_prototype_productSub", "api_Navigator_prototype_requestMediaKeySystemAccess", "api_Navigator_prototype_storage", "api_Navigator_prototype_userAgent", "api_Navigator_prototype_vendor", "api_Navigator_prototype_vendorSub", "api_Navigator_prototype_webdriver", "api_Navigator_prototype_webkitPersistentStorage", "api_Navigator_prototype_webkitTemporaryStorage", "api_NavigatorUAData_prototype_brands", "api_NavigatorUAData_prototype_getHighEntropyValues", "api_NavigatorUAData_prototype_platform", "api_Notification_permission", "api_OfflineAudioContext_prototype_constructor", "api_Performance_prototype_memory", "api_PerformanceTiming_prototype_navigationStart", "api_RTCPeerConnection_prototype_constructor", "api_RTCPeerConnectionIceEvent_prototype_candidate", "api_Screen_prototype_availHeight", "api_Screen_prototype_availLeft", "api_Screen_prototype_availTop", "api_Screen_prototype_availWidth", "api_Screen_prototype_colorDepth", "api_Screen_prototype_height", "api_Screen_prototype_orientation", "api_Screen_prototype_pixelDepth", "api_Screen_prototype_width", "api_Sensor_prototype_start", "api_SharedWorker_prototype_constructor", "api_Touch_prototype_force", "api_Touch_prototype_radiusX", "api_Touch_prototype_radiusY", "api_Touch_prototype_rotationAngle", "api_TouchEvent_prototype_constructor", "api_URL_createObjectURL", "api_WebGL2RenderingContext_prototype_getContextAttributes", "api_WebGL2RenderingContext_prototype_getExtension", 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"api_window_outerHeight", "api_window_outerWidth", "api_window_screenLeft", "api_window_screenTop", "api_window_screenX", "api_window_screenY", "api_window_sessionStorage"]}