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 - #### **Optimization**
   - [Optimisation for Machine Learning: Theory and Implementation (Hindi) - IIT](https://www.youtube.com/playlist?list=PLyqSpQzTE6M-pmLzCoMu_ANU6atEFyyJl)
   - [Rochester DSCC 435 Optimization for Machine Learning fall 2023, by Jiaming Liang](https://www.youtube.com/playlist?list=PLuJY91x7h5orCtyh6mChurVQ2ZZef9qPF)
+  - [Princeton ELE539/COS512 Optimization for Machine Learning spring 2021, by Chi Jin](https://sites.google.com/view/cjin/teaching/ece539cos512-2021-ver)
   - [EE364a: Convex Optimization I - Stanford University](https://www.youtube.com/playlist?list=PLoROMvodv4rMJqxxviPa4AmDClvcbHi6h)
   - [10-725 Convex Optimization, Spring 2015 - CMU](http://www.stat.cmu.edu/~ryantibs/convexopt-S15/)
   - [10-725 Convex Optimization: Fall 2016 - CMU](http://www.stat.cmu.edu/~ryantibs/convexopt/)