Customer-obsessed science
Research areas
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October 29, 20265 min readTwo optimization techniques, when combined, can significantly improve a model’s speed and cost effectiveness without sacrificing quality.
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October 20, 20263 min read
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October 12, 202614 min read
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Featured news
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2026LLM judges are increasingly used to evaluate open-ended responses, but their scores depend strongly on the rubrics that condition them. A vague rubric asking for a response to be “helpful and factual” can reward polished answers that invent facts or violate user intent. We treat reusable rubrics as measurement specifications: changing the rubric changes the response quality measurement induced by a fixed
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2026Music recommendations rely on robust artist embeddings that capture stylistic and behavioral similarity. A common approach is to learn track-level embeddings from customer co-listening data and aggregate them per artist, but simple heuristic aggregation (e.g., averaging) treats all tracks equally and may fail to capture which tracks best define an artist’s identity. We introduce MusicContainerNet (MCN),
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2026Music recommendation surfaces need human-readable explanations, but LLM-quality generation does not scale on the serving path. Using MyMix, an algorithmically-generated personalized playlist surface, as a testbed, we start from a whole-playlist 4B baseline and identify two limitations: feasibility (per-request inference does not scale) and input granularity (the model sees only coarse aggregated tags, not
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2026Organizing unstructured feedback text into hierarchical taxonomy is a fundamental challenge in NLP, particularly in domains where feedback arrives at massive scale in varied forms such as reviews, transcripts, and surveys. Existing approaches either produce shallow hierarchies, neglect long-tail topics, or lack rigorous evaluation frameworks. We present TaxCE, a fully automated framework that constructs
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2026As conversational AI systems increasingly engage users through multi-turn dialogue across diverse cultural contexts, cross-cultural competence, the ability to recognize, respect, and adapt to cultural differences, is essential for effective human-AI interaction. Existing evaluations largely rely on single-turn settings, overlooking the complexities of real-world, multi-turn conversations where cultural
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