Eugene Yan
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korrents.com
The surrounding system framework and scaffolding matter more for AI agent capability than the underlying model.Their words
The experiments showed that the system framework matters far more than the underlying model.
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From one piece How to Work and Compound with AI 3 beliefs, in the piece's order there
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The bottleneck has shifted from doing the work to writing clear specs and reviewing outputs fast enough to keep the pipeline moving-the middle is hollowing out.
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You can't delegate what you can't verify, so this requires first defining success criteria and metrics.
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none of this is specific to AI. It's simply how you onboard and work with any new collaborator.
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From one piece Product Evals in Three Simple Steps 3 beliefs, in the piece's order there
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korrents.com
Human annotators can miss up to half of defects due to fatigue when reviewing large volumes of samples.Their words
And human annotators can miss as many as 50% of the defects due to fatigue after looking at hundreds of samples.
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korrents.com
The main advantage of an LLM evaluator over human annotators is scalability, not higher accuracy.Their words
In my opinion, the true benefit isn't higher accuracy than human annotators-it's scalability.
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The benchmark is human performance, not perfection. We sometimes get requirements for 90%+ accuracy.
19 October 2025
From one piece Advice for New Principal Tech ICs (i.e., Notes to Myself) 3 beliefs, in the piece's order there
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To get to principal, you need to put yourself on the critical path. To be effective as a principal and go beyond it, you need to actively remove yourself from it.
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With great freedom comes great responsibility. You have the autonomy to choose what to work on, but there's the expectation of accountability and impact.
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Being right is less than half the battle. You also have to convince others that you're right, and more importantly, convince them to care enough to act on it.
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From one piece Training an LLM-RecSys Hybrid for Steerable Recs with Semantic IDs 2 beliefs, in the piece's order there
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They excel at predicting what a user will click or buy next, but can't be steered via natural language or reason on their choices.
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language models have world knowledge and can eloquently talk about products, but are unaware of our catalog. Also, their recommendations are generic and suffer from popularity bias.
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From one piece Evaluating Long-Context Question & Answer Systems 3 beliefs, in the piece's order there
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korrents.com
LLM-based evaluation methods are more reliable and nuanced than traditional automated metricsTheir words
This is why model-based evaluation is increasingly popular-it offers more reliable and nuanced evals than traditional metrics.
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korrents.com
People find pairwise comparisons of answers easier and more consistent to judge than absolute ratingsTheir words
People find comparing two answers easier than assigning absolute ratings, resulting in greater consistency across annotators.
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Their words
Since these datasets are likely already part of model training data, we shouldn't rely solely on them to evaluate our Q&A system.
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