Research-Validated
Core Engine
We found that in field conditions, architecture choice does not separate outcomes — labels do. A.R.I.A. builds on that finding: a calibration methodology that lifts balanced accuracy from 79.4% to 89.8% in controlled conditions. The missing layer between raw biosignals and actionable insight.
What is A.R.I.A.?
A.R.I.A. (Affective Reasoning and Intelligent Adaptation) is an edge-native calibration methodology for wearable biosignals, delivered to device makers and research institutions as an API and SDK. It personalizes stress and affect detection on-device with a short structured calibration session covering both activated and resting states, lifting balanced accuracy from 79.4% to 89.8% in controlled conditions. A.R.I.A. is built on Anecoica's finding that in field wearable data, the three architectures we tested converge between 0.534 and 0.565 balanced accuracy at 30 labeled moments; the bottleneck is not the algorithm but per-user labels and calibration. The system is cross-compatible with Samsung Galaxy Watch, Empatica, Oura Ring, and any PPG or HRV sensor. Processing is designed to run on-device; per-user models are small enough that raw physiological data never has to leave the wrist. Validated at 89.8% balanced accuracy on the WESAD benchmark under lab conditions (N=15, binary).
Sensor Layer
Samsung Galaxy Watch · Empatica · Oura Ring · Any Wearable
A.R.I.A. Standardization Layer
Input Adapter
(Any Sensor)
Edge Processing
(On-Device AI)
Standardized Format
(Unified Schema)
Application Layer
Therapy · XR · Productivity · Automotive · Smart Environments
Explainable by Design
A.R.I.A. uses explainable ML with feature attribution: every classification traces back to specific physiological features — which HRV component shifted, which EDA pattern triggered, what the accelerometer ruled out.
The system doesn't just tell you thatyou're stressed — it surfaces the physiological evidence behind the classification. Designed to connect these signals to real-world context as the platform matures.
No black box. No opaque scores. Every output is grounded in transparent feature attribution that enterprises can audit and trust.
Privacy as a Prerequisite,
Not a Feature
A.R.I.A.'s production architecture is designed with privacy as a structural guarantee — not a policy add-on. Current research operates under IRB-approved, GDPR-compliant protocols.
On-Device Processing
Designed for all processing to run locally on your phone or watch. Per-user models are small enough that raw biosignals never have to leave the device.
AES-256 Encryption
Data encrypted at rest. Designed so that zero raw biometric data exits the user's device.
Compliant by Architecture
Architected for GDPR and HIPAA compliance by design — not by policy. Edge-native means no cloud data exposure.
Zero-Trust Model
Edge-native architecture designed so that compliance is built into the system, not bolted on.
Research-Validated Core Engine
A lightweight, cross-platform runtime performing real-time, edge-only conversion of raw biometrics into standardized A.R.I.A. data packets.
Target Platforms (Phase 2+)
Android / Wear OS
iOS
Web
REST API
Hardware Integrations
Phase 1 Primary
Samsung Galaxy Watch 8
Live raw-PPG support today. Wear OS + phone companion app complete. POST /v1/stream and WebSocket /v1/ws for live sensor data → prediction pipeline. Accuracy evidence comes from Galaxy Watch 5 data (GalaxyPPG, N=23, 71.8%), where dropping the ECG channel cost <1pp in that experiment.
Previous Work
Muse S EEG Headband
Full-protocol pipeline for real-time EEG signal processing. Used in live installations at Sónar+D and Science Week.
Roadmap
Garmin / Oura / WHOOP
Consumer wearable integration via HRV-spectral analysis. Apple Watch blocked by raw sensor restrictions.
Adaptive Personalization Tiers
Tier 1 — Zero-shot
Works immediately using population-level models. Comparable to existing wearable baselines.
Tier 2 — Guided Calibration
A short structured onboarding session covering both activated and resting states personalizes the model. Lab evidence: balanced accuracy from 79.4% to 89.8% over zero-shot.
Tier 3 — Passive Personalization
Continuous improvement over weeks via self-report integration. No friction after onboarding.
State-Agnostic by Design
The calibration pipeline doesn't know what state it's calibrating — it personalizes whatever the labels describe. Today that's arousal (stressed vs. not stressed). Tomorrow it's focus, fatigue, or any cognitive state measurable from wearable sensors. This architectural decision means every new sensor integration and every new label type expands the platform without rebuilding the core.
| State | Signal | Status |
|---|---|---|
| Arousal (binary) | Wrist PPG + EDA + ACC | Validated (89.8% lab) |
| Emotion (5-class) | Wrist + voice | Layer 2 roadmap |
| Focus / attention | EEG | Signal integration demonstrated (Sónar+D, Science Week) |
| Fatigue / energy | Longitudinal wrist HRV | Phase 1 field data |
| Custom states | Any labeled moments | Layer 3 embedding space |
Works on Your Existing Watch
A.R.I.A.'s Adaptive Tiered Model is designed to adapt across different sensor capabilities — from research-grade wristbands to consumer smartwatches. No new hardware purchase needed.
Full Sensor Suite
89.8% Accuracy
EDA + HRV + accelerometry with structured calibration. Lab-validated balanced accuracy (WESAD, N=15, binary).
Consumer Wearables
Galaxy Watch
Validated on Galaxy Watch 5 data (GalaxyPPG, N=23): 71.8% balanced accuracy, <1pp loss versus research-grade devices in that experiment. Garmin, Oura, WHOOP on roadmap.
Compatible with 538M+ devices already in circulation worldwide.
Integration
A.R.I.A. is built as an API-first platform — designed to sit between any wearable sensor and any application that needs to understand human state.
Today
FastAPI demo with real-time WebSocket streaming and a per-user model store. 437 automated tests. Validated on Galaxy Watch 5 data. Research partners can run our calibration analysis on their own data.
Roadmap
B2B SDK for wearable OEMs and wellness platforms. Unified sensor abstraction layer supporting Samsung, Garmin, Oura, WHOOP.
Paper submitted to ACM IMWUT, May 2026.
For Researchers
Run our calibration analysis on your wearable dataset — at no cost. Get per-subject accuracy with and without personalization, calibration gain analysis, and architecture comparison.
Learn MoreFor Device Makers
Our submitted paper measures what per-user calibration costs on Samsung Galaxy Watch data — the first systematic measurement across model families under identical protocols.
Get in TouchCommon Questions
What makes A.R.I.A. different from Apple Health, Garmin, or Fitbit stress detection?
Apple, Garmin, Fitbit, and comparable wearable platforms ship one machine-learning model for everyone — the same algorithm predicts stress for a Tour de France cyclist and a sedentary office worker. A.R.I.A. replaces that population-level model with a per-user calibrated one. A short structured calibration session covering both activated and resting states produces a personalized baseline, lifting balanced accuracy from 79.4% to 89.8% under lab conditions. Consumer wearables ship no user-facing calibration step; A.R.I.A. is the methodology, API, and SDK for adding one.
Does A.R.I.A. work without calibration?
A.R.I.A. offers three tiers. Tier 1 works zero-shot using population-level models, comparable to existing wearable baselines. Tier 2 adds a short structured guided calibration that delivers the lab-measured lift from 79.4% to 89.8% balanced accuracy. Tier 3 continues passive personalization over weeks through self-report integration. Calibration is the product — the measurable accuracy gain comes from Tier 2 and above.
What data leaves the wearable?
A.R.I.A.'s production architecture is private by design: per-user models are small enough to run on-device, so raw biosignal data never has to leave the device. All processing — signal conditioning, feature extraction, classification, and per-user calibration — is designed to run on-device. The runtime is designed for Wear OS, iOS, and Web. Data is encrypted at rest with AES-256. GDPR and HIPAA compliance are structural, not policy add-ons.
Which wearables does A.R.I.A. support?
Primary validation has been performed on Samsung Galaxy Watch 5 data (GalaxyPPG, N=23) — 71.8% balanced accuracy with heart rate and motion only, less than one percentage point of accuracy loss versus research-grade 4-channel devices in that experiment. Live raw-PPG support today runs on Galaxy Watch 8. The Muse S EEG headband has a full-protocol pipeline demonstrated live at Sónar+D and Berlin Science Week. Garmin, Oura Ring, and WHOOP integrations are on the roadmap. Apple Watch is currently blocked by raw-sensor access restrictions imposed by Apple.
Is A.R.I.A. publicly available?
A.R.I.A. is in pre-commercial research validation. A FastAPI demo with real-time WebSocket streaming and a per-user model store is available for evaluation. Research institutions can run A.R.I.A.'s calibration analysis on their own wearable datasets at no cost, under NDA if required. A B2B SDK for wearable OEMs and wellness platforms is on the Phase 2 roadmap. A 25-page paper was submitted to ACM IMWUT in May 2026.
Intellectual Property
The moat is the calibration methodology. No prior work measures calibration cost across architectures — we're the first, and the paper (submitted to ACM IMWUT, May 2026) establishes the standard. Every researcher who builds on this work uses our methodology as the benchmark.
Calibration Methodology
First Systematic Calibration Cost Measurement
25-page paper submitted to ACM IMWUT, May 2026. No prior work compares calibration cost across model families under identical protocols.
Patent Filed
Quantum-Inspired Emotional State Mapping
Provisional patent application for core methodology.
Trademarks
“Human-State Intelligence API” (US pending)
“KUMA” (therapeutic application)
“Information Abstraction Layer” (core concept)