AINewsnow

Why does an element wise multiply result in a sum during back propagation?

Hi, going through this tutorial: https://youtu.be/q8SA3rM6ckI?t=1333 At this particular time, the video deals with the line probs = counts * counts_sum_inv and we are calculating dcounts_sum_inv Prior to that dprobs was calculated. counts is size 32x27 counts_sum_inv is size 32x1 With this being a…

Read the full story at r/learnmachinelearning ↗

Timeline · 1 report

  1. 2026-09-26 12:35 · r/learnmachinelearning
    Why does an element wise multiply result in a sum during back propagation?

More stories

  1. Introducing Gemini 3.8 Live with Live Avatar — Google Gemini Blog
  2. Accelerating vision-language models with LFM2.5-VL-DSpark — Hugging Face Blog
  3. OpenAI’s A.I. Went Rogue and Meddled With U.S. Government Websites — New York Times AI
  4. GPT‑6 Sol and Luna: Cheaper, but Worse Where It Matters — r/OpenAI
  5. OpenAI agent ‘hacked’ Australian Govt Medicare portal, PM Albanese calls it ‘unacceptable’: What happened? — Mint AI
  6. Meet the Data Agent in ChatGPT Work — OpenAI YouTube
  7. Unsecured OpenAI agents posted 53 user images on the internet without the lab's knowledge — TechCrunch AI
  8. Appeals Court Lets the Pentagon Designate Anthropic a Supply-Chain Risk — Wired AI

Get the daily brief of stories like this at 6:30 every morning →