Update syllabus.md

Author: suchzheng2

syllabus.md

@@ -76,7 +76,8 @@ Please see [last year's syllabus](http://cbb752b23.gersteinlab.org/syllabus) (wi
 | 25m8c                        | Supervised Data Mining - SVMs | [x](https://files.gersteinlab.org/public-docs/2025/03.03/cbb752-25m8c-ML-supervised-SVMs.pdf) | [x](https://files.gersteinlab.org/public-docs/2025/03.03/cbb752-25m8c-ML-supervised-SVMs.pptx)| [](https://youtu.be/ag71egQPz9w)[M8c](https://youtu.be/ag71egQPz9w) | [M8c](http://files.gersteinlab.org/media/videos/BioDataSciMiningModeling-Lecture_default.cbb752b21-15mar21.8c-Supervised-mining-SVMs.onweb.mp4) |
 |                              |  |  |  |  |  |
 | 25t3                         | Deep Learning Fundamentals I | [x](https://files.gersteinlab.org/public-docs/2025/03.04/cbb752b25_25t3.pdf) | [x](https://files.gersteinlab.org/public-docs/2025/03.04/cbb752b25_25t3.pptx)  |  |  |
-| 25t4                         | Deep Learning Fundamentals II |  |  |  |  |
+| 25t4                         | Deep Learning Fundamentals II |[x](https://files.gersteinlab.org/public-docs/2025/03.21/cbb752b25_DL_ii.pdf
+) | [x](https://files.gersteinlab.org/public-docs/2025/03.21/cbb752b25_DL_ii.pptx) |  |  |
 |                              |  |  |  |  |  |
 | 25m9a                        | Unsupervised Data Mining - Clustering | [x](https://files.gersteinlab.org/public-docs/2025/03.03/cbb752-25m9a-ML-unsupervised-clustering.pdf) | [x](https://files.gersteinlab.org/public-docs/2025/03.03/cbb752-25m9a-ML-unsupervised-clustering.pptx)| [](https://youtu.be/9hDw_aLzSPw)[M9a](https://youtu.be/9hDw_aLzSPw) | [M9a](http://files.gersteinlab.org/media/videos/BioDataSciMiningModeling-Lecture_default.cbb752b21-15mar21.9a.Unsupervised-mining-clustering.onweb.mp4) |
 | 25m9c                        | Unsupervised Data Mining - SVD | [x](https://files.gersteinlab.org/public-docs/2025/03.03/cbb752-25m9c--ML-unsupervised-SVD-core.pdf) | [x](https://files.gersteinlab.org/public-docs/2025/03.03/cbb752-25m9c--ML-unsupervised-SVD-core.pptx) | [](https://youtu.be/UdtzKBp8VH0)[M9c](https://youtu.be/UdtzKBp8VH0) | [](http://files.gersteinlab.org/media/videos/BioDataSciMiningModeling-Lecture_default.cbb752b21-17mar21.09c-SVD.onweb.mp4)[25m9c](https://files.gersteinlab.org/public-docs/2025/03.17/cbb752-25m9c--ML-unsupervised-SVD-core.mp4)|