Weixu Wang

Weixu Wang

Optimizing more than just loss functions
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I've long accepted that nothing feels quite like seeing Accepted. What really drives me is figuring out how things work — markets, systems, games, anything with a hidden mechanism. Show me a clever strategy and I won't rest until I've cracked its intended solution. Maybe I'm still chasing the rush of an Accepted from my OI days. Optimizing more than just loss functions. Still allergic to local optima.

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15h ago

What if latency were no longer the bottleneck — what would voice actually unlock?

I've been designing a voice pipeline lately, and the whole design boils down to one idea: a dual-speed loop.

Fast loop: a multimodal decision model whose only job is to hold the conversational rhythm. Within ~200ms of you finishing a sentence, it responds whether that's answering, asking a follow-up, or just saying "hmm, let me check" is decided in real time.

Slow loop: a voice agent doing the actual work in the background searching, running tasks, anywhere from seconds to minutes. When it's done, it picks the right moment to jump back into the conversation, guaranteeing depth and quality.

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