Browsing PhD Theses by Issue Date

Now showing items 1-20 of 76

Geo-localization and location-aware opportunistic communication for mobile phones

Yadav, Kuldeep; Naik, Vinayak (Advisor); Singh, Pushpendra (Advisor); Singh, Amarjeet (Advisor) (2014-01-21)

Location-based mobile applications are steadily gaining popularity across the world. These applications require information about user's current location to access different kind of services. However, location-based ...
Emerging covariates of face recognition

Bhatt, Himanshu S; Singh, Richa (Advisor); Vatsa, Mayank (Advisor) (2014-04-14)

A covariate in face recognition can be defined as an effect that independently increases the intra-class variability or decreases the inter-class variability or both. Covariates such as pose, illumination, expression, ...
Content quality in web 2.0 services : analysis, detection, systems and enhancement

Correa, Denzil; Sureka, Ashish (Advisor) (2014-12-24)

There has been a proliferation of Web 2.0 sites on the Internet. Contemporary Web 2.0 sites like Facebook and Twitter are primarily driven by user generated content (UGC). On the other hand, the volume of content by such ...
Designing and evaluating techniques to mitigate misinformation spread on microblogging web services

Gupta, Aditi; Kumaraguru, Ponnurangam (Advisor) (2015-07-08)

Online social media is a powerful platform for dissemination of information during important real- world events. Beyond the challenges of volume, variety and velocity of content generated on online social media, veracity ...
Harnessing auxiliary information : new methods to improve person identification

Bharadwaj, Samarth; Vatsa, Mayank (Advisor); Singh, Richa (Advisor) (2015-09-02)

Large scale biometric identification systems still lack the versatility to handle challenging situations such as adverse imaging conditions, missing or corrupt data, and non-conventional operating scenarios. It is well ...
Economic incentive-based schemes for improving data availaility in mobile-p2p environments

Padhariya, Nilesh; Mondal, Anirban (Advisor) (2015-09-02)

In a Mobile ad hoc Peer-to-Peer (M-P2P) network, mobile peers (MPs) interact with each other in a peer-to-peer (P2P) fashion. Proliferation of mobile devices (e.g., laptops, PDAs, mobile phones) coupled with the ever-increasing ...
Analysis of block cipher constructions against biclique and multiset attacks

Ghosh, Mohona; Sanadhya, Somitra Kumar (Advisor); Chang, Donghoon (Advisor) (2016-04-18)

Cryptographic protocols have been a cornerstone of secure communications among armed forces and diplomatic missions since time immemorial. With easy availability and low cost of computing facilities and Internet, the domain ...
Automated methods for identity resolution across online social networks

Jain, Paridhi; Kumaraguru, Ponnurangam (Advisor) (2016-04-28)

Today, more than two hundred Online Social Networks (OSNs) exist where each OSN extends to offer distinct services to its users such as eased access to news or better business opportunities. To enjoy each distinct service, ...
Sparse recovery techniques for hyperspectral imaging

Aggarwal, Hemant Kumar; Majumdar, Angshul (Advisor) (2016-12-23)

Human vision is a powerful imaging system that can capture and interpret light energy coming from different sources although it is limited to visible light. There are various applications such as face recognition, medical ...
Building efficient mobile systems and applications for supporting information exchange in resource limited settings

Asthana, Siddhartha; Singh, Pushpendra (Advisor) (IIIT-Delhi, 2017-01)

Enabling support for information exchange has a great impact on the development of different sections of the society. Mobile phones using telecommunication services have enabled such support in several scenarios including ...
Learning representations for matching fingerprint variants

Sankaran, Anush; Vatsa, Mayank (Advisor); Singh, Richa (Advisor) (IIIT-Delhi, 2017-02)

Fingerprint recognition has evolved over the decades, providing innumerable applications for improving the modern day security. Based on the method of capture, fingerprints can be classified into four variants: inked, ...
Systems and analytical techniques towards practical energy breakdown for homes

Batra, Nipun; Singh, Amarjeet (Advisor); Whitehouse, Kamin (Advisor) (IIIT-Delhi, 2017-03)

Buildings contribute significantly to overall energy consumption across the world. Studies suggest that providing occupants with an energy breakdown: per-appliance energy consumption, can help them save up to 15% energy. ...
Study of task processes for improving programmer productivity

Kamma, Damodaram; Jalote, Pankaj (Advisor) (IIIT-Delhi, 2017-03)
Social media and policing : computational approaches to enhancing collaborative action between residents and law enforcement

Sachdeva, Niharika; Kumaraguru, Ponnurangam (Advisor) (IIIT-Delhi, 2017-04)

Law and order concerns are one of the major disquiets of urban societies in day-to-day life. Various crime prevention theories show the importance of collaboration between residents and police for maintaining law and order ...
Open source social media as sensors for enabling government identification, prediction and response applications

Agarwal, Swati; Sureka, Ashish (Advisor); Goyal, Vikram (Advisor) (IIIT-Delhi, 2017-06)

Online Social media platforms such as Tumblr, Twitter (micro-blogging website) and YouTube (video sharing website) contains information which is publicly available or open-source. Open source social media intelligence ...
Pushing boundaries of face recognition : adversary, heterogeneity, and scale

Dhamecha, Tejas Indulal; Singh, Richa (Advisor); Vatsa, Mayank (Advisor) (IIIT-Delhi, 2017-07)

Due to the unconstrained nature of data capture and non-cooperative subjects, automatic face recognition is still a research challenge for application scenarios such as law enforcement. We observe that challenges of face ...
Empirical analyses of software contributor productivity

Rastogi, Ayushi; Nagappan, Nachiappan (Advisor); Jalote, Pankaj (Advisor) (IIIT-Delhi, 2017-08)
Techniques for automating quality assessment of context-specific content on social media services

Dewan, Prateek; Kumaraguru, Ponnurangam (Advisor) (IIIT-Delhi, 2017-08)

Online Social Networks have become a cornerstone of Web 2.0 era. Internet users around the world use Online Social Networks as primary sources to consume news, updates, and information about events around the world. However, ...
Design and analysis of password-based authentication systems

Mishra, Sweta; Chang, Donghoon (Advisor); Sanadhya, Somitra Kumar (Advisor) (IIIT-Delhi, 2017-10)

Passwords are the most widely deployed means of human-computer authentication since the early 1960s. The use of passwords, which are usually low in entropy, is delicate in cryptography because of the possibility of launching ...
Designing generic asymmetric key cryptosystem with message paddings

Bansal, Tarun Kumar; Chang, Donghoon (Advisor); Pieprzyk, Josef (Advisor); Sanadhya, Somitra Kumar (Advisor); Boyen, Xavier (Advisor) (IIIT-Delhi, 2017-10)

RSA-OAEP is being used in PKCS #1 2.0 standard for a long time. OAEP (optimal asymmetric encryption padding) provides security strength to RSA and other deterministic one-way asymmetric primitives (trapdoor one-way ...

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