Technical Reports: Recent submissions

  • Automated testing of interactive voice response applications 
    Asthana, Siddhartha; Singh, Pushpendra (2014-04-28)
    Dialing a telephone number of an organization and coming across an automated system attending the call, instead of a human, has become common. These automated applications are known as Interactive Voice Response (IVR) ...
  • Android phone based appraisal of app behavior on cell networks 
    Gupta, Shaifali; Garg, Rashi; Jain, Nikita; Naik, Vinayak; Kaul, Sanjit Krishnan (2013-10-31)
    The rapid adoption of smartphones has engendered a large ecosystem of mobile data applications. In fact, a large part of mobile tra c is now data and not voice. Many of these applications, for example VoIP clients, stay ...
  • Characterizing mobility patterns of people in developing countries using their mobile phone data 
    Yadav, Kuldeep; Kumar, Amit; Bharti, Aparna; Naik, Vinayak (2013-10-10)
    Location data collected from mobile phone users provide an ideal platform to generate human mobility patterns. These patterns give us insights into how people travel in their dayto- day lives.With availability of cellular ...
  • Biclique cryptanalysis of full round AES with reduced data complexity 
    Chang, Donghoon; Ghosh, Mohona; Sanadhya, Somitra Kumar (2013-05-31)
    Biclique cryptanalysis was proposed by Bogdanov et al. in Asiacrypt 2011 as a new tool for cryptanalysis of block ciphers. A major hurdle in carrying out biclique cryptanalysis is that it has a very high query complexity ...
  • MobiShare : cloud-enabled opportunistic content sharing among mobile peers 
    Yadav, Kuldeep; Naik, Vinayak; Singh, Amarjeet (2012-10-12)
    In developing countries, smartphones and high bandwidth connections are not yet within the reach of majority of the people. To share multimedia content among themselves, people rely on manual local sharing mechanisms i.e. ...
  • Take control over your SMSes : a real-world evaluation of a mobile-based spam SMS filtering system 
    Yadav, Kuldeep; Malhotra, Anshu; Kumaraguru, Ponnurangam; Khurana, Rushil; Singh, Dipesh Kumar (2012-07-25)
    In developing countries, Short Messaging Service (SMS) is one of the most widely used and cheapest modes of commu- nication. Hence, this medium is often exploited by advertis- ing companies to reach masses. The unsolicited ...
  • Securing the uncharted territory : transaction receipts in branchless banking 
    Panjwani, Saurabh; Ghosh, Mohona; Kumaraguru, Ponnurangam; Singh, Soumya Vardhan (2012-07-25)
    Mobile-based branchless banking has become a key mech- anism for enabling financial inclusion in the developing re- gions of the world. A fundamental requirement of all branch- less banking systems is a mechanism to ...
  • Incremental subclass discriminant analysis : a case study in face recognition 
    Lamba, Hemank; Dhamecha, Tejas I; Vatsa, Mayank; Singh, Richa (2012-03-26)
    Subclass discriminant analysis is found to be applicable under various scenarios. However, it is computationally very expensive to update the between-class and within-class scatter matrices. This research presents an ...
  • Using twitter sentiments and search volumes index to predict oil, gold, forex and markets indices 
    Rao, Tushar; Srivastava, Saket (2012-03-26)
    Behavioral finance is an upcoming research field which is drawing a lot of attention of both academia and industry. With changing dynamics of internet behavior of millions across the globe, it provides opportunity to ...
  • Twitter sentiment analysis : how to hedge your bets in the stock markets 
    Rao, Tushar; Srivastava, Saket (2012-03-26)
    Emerging interest of trading companies and hedge funds in mining social web has created new avenues for intelligent systems that make use of public opinion in driving investment decisions. It is well accepted that at ...
  • Context-aware IVR : challenges and opportunities 
    Asthana, Siddhartha; Singh, Pushpendra; Singh, Amarjeet; Naik, Vinayak (2012-03-26)
    Voice based telecommunication services are emerging as most appropriate medium for information dissemination in developing regions, as they overcome prevalent low literacy rate and are more reachable than any other ...
  • 140 characters of @hate and #protest 
    Sureka, Ashish (2012-03-26)
    Research shows that cyber-hate, illegal or malicious form of cyber-protest and cyber-activism in online social media and Web 2.0 platforms has become a common phenomenon. This is a growing concern and hence automated ...
  • Memetic approach for matching sketches with digital face images 
    Bhatt, Himanshu S; Bharadwaj, Samarth; Singh, Richa; Vatsa, Mayank (2012-03-26)
    One of the important cues in solving crimes and apprehending criminals is matching sketches with digital face images. This paper presents an automated algorithm that extracts discriminating information from local regions ...
  • Twitter explodes with activity in mumbai blasts! a lifeline or an unmonitored daemon in the lurking? 
    Gupta, Aditi; Kumaraguru, Ponnurangam (2012-03-26)
    Online social media has become an integral part of every Internet users' life. It has given common people a platform and forum to share information, post their opinions and promote campaigns. The threat of exploitation of ...
  • MELOS : a low-cost and low-energy generic sensing attachment for mobile phones 
    Bhardwaj, Abhishek; Arjunan, Pandarasamy; Singh, Amarjeet; Naik, Vinayak; Singh, Pushpendra (2012-03-26)
    Ubiquitous availability of cellular network and cheap mobile phones have made them promising sensing platforms for various application domains including healthcare, environment, and astronomy among others. However, ...
  • Can humans and automatic algorithms recognize look-alike faces? 
    Lamba, Hemank; Sarkar, Ankit; Vatsa, Mayank; Singh, Richa (2012-03-26)
    One of the major challenges of face recognition is to de- sign a feature extractor that reduces the intra-class vari- ations and increases the inter-class variations. The fea- ture extraction algorithm has to be robust ...
  • Privacy of location obfuscation 
    Bera, Debajyoti; Goyal, Vikram; Saxena, Anuj S. (2012-03-26)
    There are many results on the possibilities of privacy leak in location-based services, and many remedies have also been suggested. In this paper, we look at this problem from an altogether different perspective - ...
  • Stegobot : a covert social network botnet 
    Nagaraja, Shishir; Houmansadr, Amir; Kumar, Vijit; Agarwal, Pragya; Borisov, Nikita (2012-03-26)
    We propose Stegobot, a new generation botnet that communicates over probabilistically unobservable communication channels. It is designed to spread via social malware attacks and steal information from its victims. ...
  • Attacking the tav-128 hash function 
    Kumar, Ashish; Sanadhya, Somitra Kumar (2012-03-14)
    Many RFID protocols use cryptographic hash functions for their security. The resource constrained nature of RFID systems forces the use of light weight cryptographic algorithms. Tav-128 is one such light weight hash ...
  • Tring! Tring! usability study of a voice based information system 
    Asthana, Siddhartha; Kumaraguru, Ponnurangam; Singh, Pushpendra; Singh, Amarjeet (2012-03-14)
    In developing regions, voice based telecommunication services are one of the most appropriate medium for information dissemination as they overcome prevalent low literacy rate and are more reachable than any other medium. ...

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