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Lior Alexander Profile
Lior Alexander

@LiorOnAI

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Following
6K
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Helping devs stay up to date with AI. CEO @AlphaSignalAI → 250k users • MLE since 2017

Joined November 2012
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@LiorOnAI
Lior Alexander
1 day
Deep research mode goes further. It pulls arXiv papers, summarizes them, compares your method, and generates citation-ready tables, all without leaving Overleaf. It feels like a review committee wired into your document. If this scales, Overleaf stops being just an editor and
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@LiorOnAI
Lior Alexander
1 day
How it works: → Highlight a rough paragraph → it launches a critique + rewrite pipeline. → Reviewer, Enhancer, Scoring, and Researcher agents run in parallel. → You get before/after diffs and instant patches. → Multi-agent scheduling handles orchestration. → An MCP
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@LiorOnAI
Lior Alexander
1 day
Why this matters → Most LLM tools can’t read fine-grained context. → PaperDebugger adds bidirectional sync → It patches your source with clean diff-based updates. → All of it runs through a Chrome extension and a Kubernetes-native backend.
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@LiorOnAI
Lior Alexander
1 day
Writing papers just got 100x easier. This tool is a must for every researcher. A team just released PaperDebugger, an in-editor, multi-agent system that plugs directly into Overleaf. Not an external assistant. Not a sidebar chatbot. It lives inside the editor and works with
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@LiorOnAI
Lior Alexander
8 days
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@LiorOnAI
Lior Alexander
8 days
If you train large models: You either use SDPA output gating… or you keep debugging runaway activations, broken heads, and unstable runs. Small gate. Massive impact. Congrats to the @Alibaba_Qwen team.
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@LiorOnAI
Lior Alexander
8 days
Why It Works: Attention used to behave like a giant unprotected global variable. One bad value? Entire system destabilizes. The new gate acts like: → A non-linear firewall between attention and the next layer → A per-head circuit breaker that stops activation spikes → A
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@LiorOnAI
Lior Alexander
8 days
The Solution: The Qwen team made one tiny architectural change: A head-specific, query-dependent sigmoid gate after SDPA. Think of SDPA like a noisy function that sometimes returns normal values… and sometimes returns spikes so huge they crash the entire system. You don’t
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@LiorOnAI
Lior Alexander
8 days
The Problem: Softmax attention had two chronic failures: • Massive activations: like a function call that allocates memory until your laptop wheezes. • Attention sink:one token acting like a broken while(true) loop, hijacking the whole head. Every big model hit these
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@LiorOnAI
Lior Alexander
8 days
Qwen just won Best Paper Award at NeurIPS. And it wasn’t for a flashy new architecture. It was for fixing a problem Transformers had for years. Here’s what you need to know:
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@LiorOnAI
Lior Alexander
3 months
▸ 5-min daily newsletter for developers to keep up with AI:
Tweet card summary image
alphasignal.ai
The Best of Machine Learning. Summarized by AI.
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@LiorOnAI
Lior Alexander
3 months
Be Alex Krizhevsky. Born in the Soviet Union. Join Hinton’s lab. Create AlexNet. Train it on GPUs in your bedroom. Breaks every record. Spark the Deep Learning revolution. Get 181,495 citations. Disappear.
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@G_S_Bhogal
Gurwinder
3 months
Of all possible targets, they chose Charlie Kirk, a man who, despite holding strong views, was among the few political influencers who always made the effort to engage civilly and in good faith with people who disagreed with him. Perhaps this is why he was feared.
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@LiorOnAI
Lior Alexander
3 months
Most of your habits aren’t thoughtful decisions, they’re just the easiest ways you’ve found to avoid fear, effort, or change.
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@LiorOnAI
Lior Alexander
3 months
Reminder: The future is already here, it's just unevenly distributed.
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@LiorOnAI
Lior Alexander
3 months
AWS released an open-source framework that lets you orchestrate multiple AI agents and handle complex conversations. Can be deployed locally on your computer.
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@LiorOnAI
Lior Alexander
3 months
Always start strict, then ease up. Works with employees, relationships, laws, and deals. Doing the opposite rarely works.
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@LiorOnAI
Lior Alexander
3 months
I think I just found the best prompt... "Review this code as a senior dev" It’s improving my entire codebase. 10x cleaner code 10x fewer bugs 10x impostor syndrome
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