Abbas Karimi

 

Physics Student (MS) and Science Writer 

Sitpor.org/Abbas

As a physics student at the Center For Complex Networks & Social Cognition (CCNSC) of SBU, I work on topics at the interface of physics, computer science, and systems biology. My project aims to use physics-inspired methods to find structure within large data sets and determine when these structures are statistically significant. We are developing physics-based algorithms which can point to hidden connections between spatially disparate nodes of a network!

I am also a science writer at Sitpor.org 🙂

Projects:

Fields of Interest:

  • Complex Systems, Network Science, and Machine Learning


Thesis:

  • “Inferring Interaction Matrices of Evolving Complex Networks”

Almost all the studies about cancer are based on finding effective genes for each type of cancer and neglecting the collective behavior of the genes emerged from the regulatory effects of them on each other in a cell. In our study, we have considered each gene as a spin in a spin-glass (multivariate Gaussian) model and the gene-gene interaction as the coupling between each pair of the spins. By applying the principle of max. entropy, we have inferred the network of interactions from RNA-Seq data of genes expression levels in the case of Breast Cancer. This network is a signed weighted network, so according to the framework of  Balance Theory, we could assign energy to the triads and the entire network.

Our results show that (i) for each type of triads in the network, whether frustrated or relaxed, their energy distributions are of a power-law form. Besides, (ii) the energy-energy correlation of triads shows disassortativity in both of the networks. (iii) The energy level of the normal network is higher than the cancerous one, meaning the normal cell has more tendency toward frustration. From a dynamical point of view, it seems that there are some collective modes in the cancerous cell which we are interested to study in the future.

 


Research Experience:

  • Inferring Interaction Matrices of Evolving Complex Networks, 2017 – Present, Jafari LAB, SBU, Tehran, Iran
  • – Dynamics of Growth in Social Networks in Accordance with Preferential Attachment and Tension in the Networks‬‬/ Supervised by Dr. G.R. Jafari – 2015, Shahid Beheshti University, Tehran, Iran Accepted as a poster in the “8th Conference on Statistical Physics, Soft Condensed Matters, and Complex Systems”: Poster

My Blogs:
My Talks, Tutorials, and Lectures (Click Here)
Contact/Follow me:
In Telegram:
  1. Complex Systems Studieshttps://telegram.me/ComplexSys
  2. Physics Stuff: https://telegram.me/joinchat/BBtzwD0S6ff2F8Rz9eBJ6Q
  3. “Math Education” With Dr. Mani Rezai from Math Department of SBU: https://telegram.me/joinchat/BnsMaj7tasjQZ4SytXfzvA
With Reza and Ali, Yalda Celebration at SBU