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Benchmarking Egocentric Multimodal Goal Inference for Assistive Wearable Agents
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Introduces WAGIBench, a scripted egocentric multimodal benchmark (video, audio, digital, longitudinal context) for inferring user goals for assistive wearable agents, evaluated with MCQ and LLM-judge generative metrics.
Problem
Wearable assistant agents require users to fully specify queries; there is no ecologically valid benchmark with ground-truth goals that jointly uses egocentric video, audio, digital app state, and longitudinal history to infer user goals.
Approach
A scripted data collection with Aria glasses recordings, LLM-generated digital app states, and Socratic (caption-based) longitudinal histories, paired with both sentenceBERT-sampled MCQs and an LLM judge validated against human raters.
Key results
- Human MCQ accuracy reaches 93% (similar distractors) and 97% (dissimilar), while the best model (Qwen-based) gets about 84% on similar MCQs.
- LLM judge conditioned on reference goal and script cues reaches 76.8% pairwise alignment with humans, comparable to human-human agreement of 75.2%.
- Adding audio context improves performance by as much as 35% on MCQ and 30% on generative evaluation over vision-only context on the VA subset.
Measured effects reported in the paper
| What was changed | Where | Measured | Effect |
|---|---|---|---|
| condition the judge on both reference goal and script cues | LLM Judge · WAGIBench, generative meta-evaluation | pairwise comparison accuracy: 76.8% | Helped |
| use Socratic context instead of reference and script cues (ablation) | LLM Judge · WAGIBench, generative meta-evaluation | pairwise comparison accuracy: 63.0% | Hurt |
| map generated goals onto fixed MCQ options (ablation) | generative evaluation · WAGIBench, generative meta-evaluation | pairwise comparison accuracy: 67.8% | Hurt |
| replace LLM judging with sentenceBERT similarity (ablation) | generative evaluation · WAGIBench, generative meta-evaluation | pairwise comparison accuracy: 59.5% | Hurt |
| increase model size within a model family | VLMs · WAGIBench, discriminative and generative tasks | performance | Helped |
| add audio transcription to vision input (ablation) | VLMs · WAGIBench, S_VA | performance: as large as 35% on the MCQ task and 30% on the generative evaluation | Helped |
| add relevant digital app states to vision input (ablation) | VLMs · WAGIBench, S_VD | performance: as much as 12% | Helped |
| use only relevant digital app states instead of full digital context (ablation) | VLMs · WAGIBench, S_VD | performance: as much as 12% | Helped |
| use only positive-support history instead of full longitudinal history (ablation) | VLMs · WAGIBench, S_VL | performance: at most 5.6% | Helped |
| provide all modalities, including distracting digital and longitudinal context (ablation) | small and medium VLMs · WAGIBench, full benchmark | performance | Hurt |
Surprising findings
- Digital and longitudinal contexts give less benefit than audio, attributed to low signal-to-noise ratio; high-signal versions (D*, L*) help more.
- Socratic (caption-based) context underperforms at 63.0% alignment, and SBERT similarity performs poorly at 59.5%.
Limitations
- Human predictability validated only for vision and audio, not digital or longitudinal contexts.
- Assumes user-initiated interactions; no negative samples for proactive when-to-act inference.
- Dataset is scripted, and digital states are LLM-synthesized, limiting ecological validity.
Experimental setup
Datasets: WAGIBench (scripted Aria recordings) Ego4D (related work comparison)
Benchmarks: WAGIBench
Metrics: MCQ accuracy LLM judge relevance score pairwise comparison accuracy with human raters
Baselines: Llama-3.2-11B-Vision Qwen2.5-VL-3B Qwen2.5-VL-7B Qwen2.5-VL-72B InternVL2.5-MPO-2B InternVL2.5-MPO-8B InternVL2.5-MPO-78B GPT-4.1 SBERT Similarity Snap-MCQ
Builds on: Ego4D Socratic models sentenceBERT DeepSeek-R1-Distill
Closest papers by meaning
- MMT-Bench: A Comprehensive Multimodal Benchmark for Evaluating Large Vision-Language Models Towards Multitask AGI (ICML 2024 · similarity 0.87)
- MMBench-Live: A Continuously Evolving Benchmark for Multimodal Models (ICML 2026 · similarity 0.86)
- WearVQA: A Visual Question Answering Benchmark for Wearables in Egocentric Authentic Real-world scenarios (NeurIPS 2025 · similarity 0.86)
- LifeEval: A Multimodal Benchmark for Assistive AI in Egocentric Daily Life Tasks (CVPR 2026 · similarity 0.86)
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- What matters when building vision-language models? (NeurIPS 2024 · similarity 0.86)
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