Physics-Informed Neural Networks often fail due to a hidden problem: gradient conflict.
The data loss says "go right." The physics loss says "go left." Standard balancing makes it worse, equal opposing gradients cancel out completely. Training stalls.
Our new method, CGGS, adds a sigmoid gate that detects conflict using cosine similarity and suppresses the physics signal only when it's fighting the data.
Result: full epidemic curve recovered from just 20 noisy data points.
📄 arxiv.org/abs/2603.23799
🎥 Full video: youtu.be/bXUlmo1E64M@DIMMS_Lab@YorkUniversity#PINNs#DeepLearning#AI#MachineLearning#MathematicalBiology#Epidemiology#ComputationalScience
Our new publication proposes the use of modular arithmetic to define distinct seasonal transmission rates with a smooth transition. We believe this is the first kind.
- Unlike sinusoidal models, which struggle with sharp transmission shifts, the modular approach captures abrupt changes linked to school terms and behavioral changes.
- A two-stage optimization process was employed: a coarse grid search followed by stochastic refinement.
- The model produced recurrent seasonal outbreaks, with effective reproduction numbers oscillating around the epidemic threshold.
A joint work with Nickson Golooba at our @DIMMS_Lab
Article link: aimspress.com/article/doi/10…
Funding: @NSERC_CRSNG and @YorkUniversity's Small Research Grant.
🎉 DIMMS Lab is now on X!
We're the Disease-Informed Modelling, Methods & Systems Lab at @YorkUniversity, researching:
🧬 Mathematical biology
🤖 Disease-informed neural networks
📊 Computational epidemiology
Follow along for research updates, publications & more!
🔗 dimmslab.org#MathBiology#Epidemiology#Research
498 Followers 1K FollowingBiomathematicians; Applied Differential Equations, Python Data analysis, Machine learning.
Assistant Professor at York University
24K Followers 1K FollowingYork University is driving positive change. With a diverse community and a uniquely global perspective, together we can make things right for our future. #YorkU
2K Followers 136 FollowingCommunity of black mathematicians, promoting Equality, Diversity and Inclusion, visibility and networking opportunities between professionals.
Registered ®️
395 Followers 258 FollowingHome of Canada’s longest-running undergrad global health program, plus an innovative PhD. Our faculty & students are making a leading impact, locally & globally
463 Followers 380 FollowingWe deepen the understanding of how responsible AI solutions can improve public health preparedness & response to disease outbreaks in the Global South
579 Followers 259 FollowingOur aim is to mobilize AI to build equitable, resilient governance strategies & increase societal preparedness for future global pandemics and climate disaster
498 Followers 1K FollowingBiomathematicians; Applied Differential Equations, Python Data analysis, Machine learning.
Assistant Professor at York University
29K Followers 814 FollowingOfficial account of the National Research Council Canada. Terms of use: https://t.co/4elx32j7gS Suivez-nous en français : @CNRC_NRC
81K Followers 4K FollowingThe Natural Sciences and Engineering Research Council of Canada. En français @CRSNG_NSERC Terms of Service: https://t.co/JCzJHARVGW
4.8M Followers 452 FollowingCutting-edge research, news, commentary, and visuals from the Science family of journals. Follow @NewsfromScience for stories from our News team.