1. REU Week 4: Real-Time Video Anomaly Detection
Project Leader: Praveen Tirupattur
Urvi Gianchandani

2. Overview
Experiments
Papers
Next Steps

3. Experiments

4. Sparse Autoencoder
Actual Frame
Reconstructed Frame

5. Autoencoder with Optical Flow
Optical Flow Frame
Reconstructed Frame

6. Papers

7. Unsupervised Deep Embedding for Clustering Analysis: Junyuan Xie, Ross Girshick , Ali Farhadi (1)
DEC (Deep Embedded Clustering): learn feature representation & cluster assignments simultaneously
Two Phases:
Parameter initialization (SAE): representations
Parameter optimization (clustering):
Soft assignment
KL divergence
Optimization

8. Deep Adaptive Image Clustering: Jianlong Chang, Lingfeng Wang, Gaofeng Meng, Shiming Xiang, Chunhong Pan (2)

9. Jianwei Yang, Devi Parikh, Dhruv Batra (3)
Joint Unsupervised Learning of Deep Representations and Image Clusters :
Jianwei Yang, Devi Parikh, Dhruv Batra (3)
CNN: deep representations
Agglomerative clustering: recurrent process to merge clusters

10. Next Steps
Implement DEC on Ped2 dataset
Deep Clustering

11. References https://arxiv.org/pdf/1511.06335.pdf