Tianjian Qin

Tianjian Qin

PhD candidate, computational scientist
I study complex biological systems using probabilistic modeling, simulation, and machine learning.

What I do

In my current project, I build modeling and machine-learning pipelines to turn large spatiotemporal livestock movement data into realistic network “digital twins” and decision-relevant insights; in my spare time, I bring complex data to life through interactive visualizations and open tools—below is an overview of my skill set, and you can find out more in my blogs and projects.

Scientific Programming

R, Python, C++. Package development, data analysis, visualization, simulation.

Machine Learning / AI

Machine learning, deep learning, neural networks, with PyTorch, Sklearn, and more.

Modeling and Inference

Combining stochastic processes, graph theory, and network science

Big Data

Learning to use SQL, Spark, and other modern frameworks.
d3.js Icon

Web Development

HTML, CSS, JavaScript, interactive data visualization with D3.js.

GIS, Bioinformatics

Geospatial analysis, phylogeny reconstruction, metagenomics

Bash, Server, HPC

Server-side software maintenance, HPC management.

Scientific Writing

Typesetting, rendering and visualization with LaTeX, TikZ and PGFPlots.

Featured Blog Posts

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HerdLink: Exploring NL livestock trade as a network

Livestock trade data looks nicer with dashboarding. This post introduces HerdLink—an interactive NL livestock trade network explorer ...

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Sub-Species Level Diversification and Tree Coarsening

Diversification is an event-by-event process, and a tree can hide what actually happened. This post walks through a toy simulator turning “tree-like” history into a network ...

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A Protocol to Bridge Phylogeny and GCN

Phylogenies are essentially graphs. Therefore, we can utilize a specific class of neural networks-the graph convolutional networks-to extract valuable information. But how? ...

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