Elad Wasserstein

Reichman University

Advisors: Prof. Anat Bremler-Barr and Dr. Eli Brosh

Graduation 2021


Elad Wasserstein holds his M.Sc in Computer Science and Computer Engineering from Reichman University and Ben-Gurion University respectively. He is active in the areas of Cyber Security, Compression in IoT environments with involvement of AI and big data technologies. After several years of building cyber prevention systems, in the past year he joined Meta (previously Facebook) to help engineers solve problems, predict future events, and reach relevant data more quickly by pushing Meta’s infrastructure to be smarter and capable of learning from previous experience.


Conferences & Workshops
Eli Brosh, Elad Wasserstein, Anat Bremler-Barr
IEEE/IFIP NOMS Manage-IoT workshop ,

Monitoring medical data, e.g., Electrocardiogram (ECG) signals, is a common application of Internet of Things (IoT) devices. Compression methods are often applied on the massive amounts of sensor data generated prior to sending it to the Cloud to reduce the storage and delivery costs. A lossy compression provides high compression gain (CG), but may reduce the performance of an ECG application (downstream task) due to information loss. Previous works on ECG monitoring focus either on optimizing the signal reconstruction or the task’s performance. Instead, we advocate a self-adapting lossy compression solution that allows configuring a desired performance level on the downstream tasks while maintaining an optimized CG that reduces Cloud costs.
We propose Dynamic-Deep, a task-aware compression geared for IoT-Cloud architectures. Our compressor is trained to optimize the CG while maintaining the performance requirement of the downstream tasks chosen out of a wide range. In deployment, the IoT edge device adapts the compression and sends an optimized representation for each data segment, accounting for the downstream task’s desired performance without relying on feedback from the Cloud. We conduct an extensive evaluation of our approach on common ECG datasets using two popular ECG applications, which includes heart rate (HR) arrhythmia classification. We demonstrate that Dynamic-Deep can be configured to improve HR classification F1-score in a wide range of requirements. One of which is tuned to improve the F1-score by 3 and increases CG by up to 83% compared to the previous state of-the-art (autoencoder-based) compressor. Analyzing DynamicDeep on the Google Cloud Platform, we observe a 97% reduction in cloud costs compared to a no compression solution. To the best of our knowledge, Dynamic-Deep is the first end-to end system architecture proposal to focus on balancing the need for high performance of cloud-based downstream tasks and the desire to achieve optimized compression in IoT ECG monitoring settings.