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Chaitanya K. Joshi
3,733 posts
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Chaitanya K. Joshi
@chaitjo
AI for biology 🧬 Stanford Data Science Fellow @RDasLab PhD @Cambridge_Uni · prev @AIatMeta @PrescientDesign @MRC_LMB
Palo Alto, CA
chaitjo.com
Joined July 2010
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  • Pinned
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    Chaitanya K. Joshi
    @chaitjo
    Jan 8
    Article cover image
    Article
    A Cambridge PhD thesis in three research questions
    Happy new year 2026! I’ve officially passed my PhD thesis defence! Writing the thesis was a meditative and reflective period; a culmination of almost 4 years of research. As I look back, I feel...
    32K
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    Chaitanya K. Joshi
    @chaitjo
    Oct 3, 2021
    Are you applying for a PhD in Machine Learning, Artificial Intelligence, and beyond? Here's a thread of high-quality resources that helped me understand the process + craft my application better. 👇
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    May 19, 2025
    In one interview, Demis talked about how he likes to work at night b/c there's no disturbance and time feels 'infinite' in the sense that you can just stay awake/keep working till the next day if you are in a flow state. CS undergrads will probably relate...
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    Demis Hassabis
    @demishassabis
    May 19, 2025
    Nothing beats burning the midnight oil in a maximum state of flow...
    94K
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    Feb 28, 2020
    Excited to share a blog post on the connection between #Transformers for NLP and #GraphNeuralNetworks (GNNs or GCNs). graphdeeplearning.github.io/post/transform…
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    Chaitanya K. Joshi
    @chaitjo
    Jan 29, 2023
    ❓New to Geometric GNNs, GDL, PyTorch Geometric, etc.? Want to understand how theory/equations connect to real code? Try this practical notebook before diving into this exciting area! **Geometric GNNs 101** github.com/chaitjo/geomet…
    Axes of geometric GNN expressivity: (1) Scalarisation body order: increasing body order of scalarisation builds expressive local neighbourhood descriptors; (2) Tensor order: higher order spherical tensors determine the relative orientation of neighbourhoods; and (3) Depth: deep equivariant layers propagate geometric information beyond local neighbourhoods.
    user avatar
    Chaitanya K. Joshi
    @chaitjo
    Jan 24, 2023
    🚀Excited+nervous to share our latest work on understanding geometric GNNs for biomolecules, materials, etc. "On the Expressive Power of Geometric GNNs" with @crisbodnar @SimMat20 @TacoCohen @pl219_Cambridge PDF: arxiv.org/abs/2301.09308 Code: github.com/chaitjo/geomet… Findings👇
    138K
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    Chaitanya K. Joshi
    @chaitjo
    Feb 6, 2022
    On the bottleneck introduced by Attention as a GNN aggregation function - Packing information into a single attention weight (as opposed to a d-dim message) regularises the model. I find this concept very beautiful and elegant!
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    Chaitanya K. Joshi
    @chaitjo
    Feb 19, 2025
    Our first attempts at mechanistic interpretability of Transformers from the perspective of network science and graph theory! A wonderful collaboration with superstars @elb4tu, Deepro Choudhury, @pl219_Cambridge as part of the Geometric Deep Learning class at @Cambridge_CL!
    42K
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    Chaitanya K. Joshi
    @chaitjo
    Jun 25, 2025
    Really thought-provoking new paper on representation learning and the notion of 'semantic compression' by @ChenShani2 @jurafsky @ylecun @ziv_ravid
    96K
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    Chaitanya K. Joshi
    @chaitjo
    Jun 30, 2025
    Needing a permanent doi was a forcing function to revisit this article on Transformers and Graph Neural Networks. This is (very) old news, so what's new?
    user avatar
    Chaitanya K. Joshi
    @chaitjo
    Feb 28, 2020
    Excited to share a blog post on the connection between #Transformers for NLP and #GraphNeuralNetworks (GNNs or GCNs). graphdeeplearning.github.io/post/transform…
    73K
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    Mar 19, 2025
    Flow matching has gained popularity recently which is better, diffusion or flow matching? They are formally equivalent Our purpose is to help practitioners understand and use these frameworks interchangeably -- **regardless of what it’s called**
    43K
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    Mar 10, 2025
    Introducing All-atom Diffusion Transformers — towards Foundation Models for generative chemistry, from my internship with the FAIR Chemistry team @OpenCatalyst @AIatMeta There are a couple ML ideas which I think are new and exciting in here 👇
    84K
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    Aug 11, 2021
    Hi GNN friends 👋, I'm creating an awesome-list on efficient Graph Neural Networks and scalable Graph Representation Learning. I'm excited about real-world applications of GNNs, and am looking to learn more about deploying them! Please help improve:
    GitHub - chaitjo/efficient-gnns: Code and resources on scalable and efficient Graph Neural Networks...
    From github.com
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    Nov 4, 2022
    Looking forward to publicly talking about my PhD research for the first time, together with @SimMat20! 💙 "Graph Neural Networks for Geometric Graphs" When: this Tuesday, 8 November 2022, 1pm - 2pm GMT. Where: LT2, Computer Lab as well as Zoom. Link: talks.cam.ac.uk/talk/index/183…
  • user avatar
    Chaitanya K. Joshi
    @chaitjo
    Aug 15, 2024
    In case anyone is reading...I feel a bit broken by my NeurIPS rebuttal experience this year :(
    101K

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