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Eric Todd
@ericwtodd
Computer Science PhD Student at Northeastern University Research Fellow @GoodfireAI
Boston, MA
ericwtodd.github.io
Joined December 2014
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    Eric Todd
    @ericwtodd
    Jan 22
    Can you solve this algebra puzzle? 🧩 cb=c, ac=b, ab=? A small transformer can learn to solve problems like this! And since the letters don't have inherent meaning, this lets us study how context alone imparts meaning. Here's what we found:🧵⬇️
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    Eric Todd
    @ericwtodd
    Apr 18
    I'll be attending #ICLR2026 next week to present my work on In-Context Algebra! My poster will be on Fri, April 24 at 3:15-5:45PM at Pavilion 4 P4-#4011. If you're around, stop by and say hello! My DMs are open if you want to connect or meet up in Rio!
    user avatar
    Eric Todd
    @ericwtodd
    Jan 22
    Can you solve this algebra puzzle? 🧩 cb=c, ac=b, ab=? A small transformer can learn to solve problems like this! And since the letters don't have inherent meaning, this lets us study how context alone imparts meaning. Here's what we found:🧵⬇️
    Image
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    Eric Todd
    @ericwtodd
    Oct 6, 2025
    Looking forward to attending #COLM2025 this week! Would love to meet up and chat with others about interpretability + more. DMs are open if you want to connect. Be sure to checkout @sheridan_feucht's very cool work on understanding concepts in LLMs tomorrow morning (Poster 35)!
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    Sheridan Feucht
    @sheridan_feucht
    Apr 7, 2025
    [📄] Are LLMs mindless token-shifters, or do they build meaningful representations of language? We study how LLMs copy text in-context, and physically separate out two types of induction heads: token heads, which copy literal tokens, and concept heads, which copy word meanings.
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    Eric Todd
    @ericwtodd
    Jun 30, 2025
    NEMI was a lot of fun last year and it's happening again! I've found I really enjoy local research meetups - they're a great place to meet new people working on interesting problems. Looking forward to it!
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    Koyena Pal
    @kpal_koyena
    Jun 30, 2025
    🚨 Registration is live! 🚨 The New England Mechanistic Interpretability (NEMI) Workshop is happening August 22nd 2025 at Northeastern University! A chance for the mech interp community to nerd out on how models really work 🧠🤖 🌐 Info: nemiconf.github.io/summer25/ 📝 Register:
    NEMI 2024 (last year) group pic
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    Eric Todd
    @ericwtodd
    May 3, 2024
    I'll be at #ICLR2024 next week to present my work on Function Vectors. My poster slot is Wed, May 8th at 10:45-12:45, but I'd love to meet up and chat with other attendees as well. DMs are open if you want to connect and chat. See you in Vienna!