Portrait of Ranjita Bhagwan

Ranjita Bhagwan

Researcher

About

I am a researcher at Microsoft Research India. Previously, I was a research staff member at IBM T. J. Watson Research in Hawthorne, NY, USA. Prior to that, I completed my PhD in 2004 from the University of California at San Diego. My interests are mainly in solving problems related to Networking and Distributed Systems.

Projects

Seabed

Established: December 1, 2015

Seabed is a project to provide analytics over encrypted Big Data. The challenge is to develop fast yet secure cryptographic techniques that support a suite of applications such as Business Intelligence tools and large-scale Machine Learning frameworks. Towards this, we have developed two novel cryptographic techniques:a high-performance, additive symmetric homomorphic scheme (ASHE) and Splayed ASHE (SPLASHE), an encryption scheme that thwarts frequency analysis-based attacks. We have built Seabed into Apache Spark and we show that we…

RadioJockey

Established: July 12, 2012

Many networked applications that run in the background on a mobile device incur significant energy drains when using the cellular radio interface for communication. This is mainly due to the radio-tail, where the cellular radio remaining in a high energy state for up to 20s after each communication spurt. In order to cut down energy consumption, many recent devices employ fast dormancy, a feature that forces the client radio to quickly go into a low…

CoCoNet

Established: June 1, 2009

Content Compression in Networks With the advent of globalization, networked services have a global audience. For example, a large corporation today may have branch offices at dozens of cities around the globe. In such a setting, the corporation's IT admins and network planners face a dilemma. On the one hand, they could centralize or concentrate the servers that power the corporation's IT services (e.g., email servers, file servers) at one or a small number of…

NetPrints

Established: March 1, 2009

Diagnosing Home Network Misconfigurations using Shared Knowledge The Problem Today's home network is typically a collection of several devices and applications. While the broadband modem acts as the home's window to the Internet world, there are a variety of different hardware and software components that interact within people's homes. For example, you may have a wireless router attached to your broadband modem, with several laptops and desktops connecting both through wires and wirelessly to the…

SixthSense

Established: December 26, 2008

RFID based enterprise intelligence The vision of the SixthSense project in the MNS group at Microsoft Research India is the workplace or home of the future where computing is extended to encompass non-computing entities such as people, objects, and spaces to enable rich user experiences. For instance, we would like users to be able to search the physical world for objects they may have misplaced or use physical events to index their experiences (e.g., "was my…

Publications

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