Day to go!!!

Open Days 2013

March 1st and 2nd, 2013

Technical Talks

Get to know the exciting world of Computer Science.

All the talks can be viewed online at the following links:
March 1st, 11.00am - 12.00pm / Room 117

Machine Learning Applications at Amazon

Dr. Rajeev Rastogi, Amazon

In the first part of my talk, I will provide an overview of machine learning applications at Amazon. I will then describe the problem of extracting records from web pages and present a machine learning approach that uses Markov Logic Networks (MLNs) to capture content and structural features in a single unified framework. One of our main contributions is a fast graph-based approach for MLN inference.

About the speaker:
Rajeev Rastogi is the Director of Machine Learning at Amazon. Previously, he was the Vice President of Yahoo! Labs Bangalore, and the founding Director of the Bell Labs Research Center in Bangalore. Rajeev is active in the fields of databases, data mining, and networking, and has served on the program committees of several conferences in these areas. He currently serves on the editorial board of the CACM, and has been an Associate editor for IEEE Transactions on Knowledge and Data Engineering in the past. He has published over 125 papers, and holds over 50 patents. Rajeev is an ACM Fellow and a Bell Labs Fellow. He received his B. Tech degree from IIT Bombay, and a PhD degree in Computer Science from the University of Texas, Austin.

March 1st, 2.00pm - 3.00pm / Room 117

Macromolecular Structure and Function: Insights from Network Approaches

Prof. Saraswathi Vishveshwara, MBU, IISc

Understanding the structure and function of macromolecules like proteins and DNA is crucial to decipher the functioning of living systems as well as to learn about the molecular basis of diseases. Last two decades have witnessed an exponential growth in the biological data such as genome sequences and the structures of proteins, nucleic acids and their complexes. The challenge is to extract meaningful, valuable information from this vast amount of data. Computational methods, as well as computing power, have also increased enormously during this period. Consequently, computational biology has become an active area of inter- disciplinary research involving the investigation of problems ranging from system biology to atomistic simulations.

Today network approaches are employed to explore a variety of fields including electrical communication, computer networking, finance, social networks, and biological networks. In the present talk, I shall describe the network approach adopted to study the structure and function of proteins. The three dimensional co-ordinates of the atoms of proteins are used to represent the structure in a network form, in which the amino acid residues of the polymer chain are represented as nodes and non-covalent interactions among them in the 3- D structure are represented as edges. A graph, thus constructed, is examined for emergent global properties such as the nodes of high connectivity (hubs), collection of nodes with high inter-connectivity (cliques, communities), paths of communication between selected terminal nodes and so on. Many of these parameters find biological significance, such as the hotspots for holding the structure and protein-protein interaction, paths of long-distance communication (allosteric communication), etc. Further, the function is a dynamical property that is captured by molecular dynamics (MD) simulations. And the network analyses of the trajectories provide a dynamical picture of the function.

The concepts and methods outlined above will be elucidated and the biological insights will be discussed with specific examples.

About the speaker:
Prof. Saraswathi Vishveshwara is an emeritus professor at Molecular Biophysics Unit (MBU), IISc. She obtained her Ph.D in Quantum chemistry of Biomolecules, from City University of New York. She was a post doctoral fellow at Carnegie Mellon University, Pittsburgh. She has worked in Quantum chemistry with Late Sir John Pople, a Nobel Prize winner for his contributions to the field of quantum chemistry. She was a post-doctoral fellow at Molecular Biophysics Unit (MBU), IISc from 1977 to 1980. She was a faculty in Molecular Biophysics Unit (MBU), IISc from 1981 to 2011. She is a fellow of the Indian Academy of Sciences Bangalore and the National Academy of Science, Allahabad. She has been associated with the IISc Mathematical Biology Project. She had served as the Chairperson of Bioinformatics Centre and served on various committees of Supercomputer Education and Research Centre (SERC), IISc.

Her area of research is Computational Biology. She has taken an interdisciplinary approach by applying the concepts of physics/chemistry and various mathematical/computational techniques to understand the structure, function and folding of proteins and nucleic acids. She has extensively developed the concepts of graph theory and network parameters to the problems related to protein structure and function. She has developed methods to integrate molecular dynamics simulations and graph theory to understand the dynamical properties of macromolecules. Her scientific findings are reported in more than 100 research articles.

March 2nd, 11.00am - 12.00pm / Room 117

Combating Malware and Engineering the Science of Security: Issues and Challenges

RK Shyamasundar, TIFR

In this talk, we discuss two aspects: methods for malware detection and realizing security and integrity policies through any programming language based on controlling flow of information. In the former, we discuss approaches of malware detection ranging from syntactic to semantic techniques and their limitations and current approaches to detect complex virus including metamorphic and polymorphic viruses. In the second half of the talk, we discuss approaches for realizing the necessary security and integrity policies for controlling information flow in systems with mutual distrust and decentralized authority. In the context of multilevel security, we how user scan share information with distrusted code but still able to control how that code disseminates the shared information to others. Such approaches shall form the core science of security.

About the speaker:
Prof. Shyamasundar is a Senior Professor and J.C. Bose National Fellow at the School of Technology & Computer Science Tata Institute of Fundamental Research, Mumbai. His research interests include Real-Time and Reactive Programming: Langauges, Specification and Verification; Logic Programming; Parallel Programs and Scheduling and Programming Languages: Semantics, Design, and Tools. He is a Fellow of the Indian Academy of Sciences, Indian National Science Academy, Indian National Academy of Engineering, The National Academy of Sciences, India, and TWAS (Academy of Sciences of the Developing World).
Prof. Shyamasundar is one of the proud products of the Department of Computer science and Automation. In fact, he is among the earliest Ph.D. graduates of the Department.