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Browsing MIT Open Access Articles by Author "Madden, Samuel R."

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Browsing MIT Open Access Articles by Author "Madden, Samuel R."

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  • Thiagarajan, Arvind; Ravindranath, Lenin; Balakrishnan, Hari; Madden, Samuel R.; Girod, Lewis D. (USENIX Association, 2011-03)
    CTrack is an energy-efficient system for trajectory mapping using raw position tracks obtained largely from cellular base station fingerprints. Trajectory mapping, which involves taking a sequence of raw position samples ...
  • Arden, Owen; Myers, Andrew C.; Cheung, Alvin K.; Madden, Samuel R. (Association for Computing Machinery (ACM), 2012-07)
    Database-backed applications are nearly ubiquitous in our daily lives. Applications that make many small accesses to the database create two challenges for developers: increased latency and wasted resources from numerous ...
  • Agarwal, Sameer; Iyer, Anand P.; Panda, Aurojit; Mozafari, Barzan; Stoica, Ion; Madden, Samuel R. (Association for Computing Machinery (ACM), 2012-08)
    In this demonstration, we present BlinkDB, a massively parallel, sampling-based approximate query processing framework for running interactive queries on large volumes of data. The key observation in BlinkDB is that one ...
  • Mittal, Manas; Wu, Wei; Rubin, Steve; Madden, Samuel R.; Hartmann, Björn (Association for Computing Machinery (ACM), 2012-02)
    Corruption is endemic in many emerging economies - many transactions of private citizens with government institutions require payment of bribes. While well known as a general phenomenon, specific data about the "bribe ...
  • Ravindranath, Lenin; Thiagarajan, Arvind; Balakrishnan, Hari; Madden, Samuel R. (Association for Computing Machinery (ACM), 2012-02)
    A growing class of smartphone applications are tasking applications that run continuously, process data from sensors to determine the user's context (such as location) and activity, and optionally trigger certain actions ...
  • Kaler, Timothy; Lynch, John Patrick; Peng, Timothy; Sivalingam, Lenin Ravindranth; Thiagarajan, Arvind; Balakrishnan, Hari; Madden, Samuel R. (Association for Computing Machinery, 2010-01)
    Modern smartphones are equipped with a wide variety of sensors including GPS, WiFi and cellular radios capable of positioning, accelerometers, magnetic compasses and gyroscopes, light and proximity sensors, and cameras. ...
  • Malviya, Nirmesh; Madden, Samuel R.; Bhattacharya, Arnab (International Conference on Data Engineering, 2011-04)
    In this paper, we address the problem of answering continuous route planning queries over a road network, in the presence of updates to the delay (cost) estimates of links. A simple approach to this problem would be to ...
  • Kimura, Hideaki; Huo, George; Rasin, Alexander; Madden, Samuel R.; Zdonik, Stanley B. (Association for Computing Machinery (ACM), 2010-09)
    We describe an automatic database design tool that exploits correlations between attributes when recommending materialized views (MVs) and indexes. Although there is a substantial body of related work exploring how to ...
  • Kimura, Hideaki; Huo, George; Rasin, Alexander; Zdonik, Stanley B.; Madden, Samuel R. (Association for Computing Machinery (ACM), 2009-08)
    In relational query processing, there are generally two choices for access paths when performing a predicate lookup for which no clustered index is available. One option is to use an unclustered index. Another is to perform ...
  • Feng, Amber; Franklin, Michael; Kossmann, Donald; Kraska, Tim; Madden, Samuel R.; Ramesh, Sukriti; Wang, Andrew; Xin, Reynold (VLDB Endowment, 2011-08)
    Databases often give incorrect answers when data are missing or semantic understanding of the data is required. Processing such queries requires human input for providing the missing information, for performing computationally ...
  • Marcus, Adam; Wu, Eugene; Karger, David R.; Madden, Samuel R.; Miller, Robert C. (CIDR, 2011-01)
    Amazon's Mechanical Turk (\MTurk") service allows users to post short tasks (\HITs") that other users can receive a small amount of money for completing. Common tasks on the system include labelling a collection of ...
  • Madden, Samuel R. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    Sensor networking hardware, networking, and operating system software has matured to the point that the major challenges facing the field now have to do with storing, cleaning, and querying the data such networks produce. ...
  • Madden, Samuel R.; Harizopoulos, S.; Argyros, T.; Boncz, P. A.; Dietterich, D.; Waas, F. M. (Institute of Electrical and Electronics Engineers (IEEE), 2010-04)
    The last few years have been exciting for data management system designers. The explosion in user and enterprise data coupled with the availability of newer, cheaper, and more capable hardware have lead system designers ...
  • Cheung, Alvin K.; Thiagarajan, Arvind; Madden, Samuel R. (Association for Computing Machinery (ACM), 2011-11)
    This demo will showcase LifeJoin, a system that collects raw sensor data from phones and laptop computers to generate interesting events. Given the raw sensor data, LifeJoin implements a number of activity recognition ...
  • Wu, Eugene; Stonebraker, Michael; Madden, Samuel R. (Association for Computing Machinery (ACM), 2012-08)
    As data analytics becomes mainstream, and the complexity of the underlying data and computation grows, it will be increasingly important to provide tools that help analysts understand the underlying reasons when they ...
  • Marcus, Adam; Wu, Eugene; Karger, David R.; Madden, Samuel R.; Miller, Robert C. (Association for Computing Machinery (ACM), 2011-06)
    Crowdsourcing technologies such as Amazon's Mechanical Turk ("MTurk") service have exploded in popularity in recent years. These services are increasingly used for complex human-reliant data processing tasks, such as ...
  • Seering, Adam; Cudre-Mauroux, Philippe; Stonebraker, Michael; Madden, Samuel R. (Institute of Electrical and Electronics Engineers (IEEE), 2012-04)
    In this paper, we describe a versioned database storage manager we are developing for the SciDB scientific database. The system is designed to efficiently store and retrieve array-oriented data, exposing a "no-overwrite" ...
  • Marcus, Adam; Wu, Eugene; Madden, Samuel R.; Miller, Robert C. (VLDB Endowment, 2011-09)
    Crowdsourcing markets like Amazon's Mechanical Turk (MTurk) make it possible to task people with small jobs, such as labeling images or looking up phone numbers, via a programmatic interface. MTurk tasks for processing ...
  • Sivalingam, Lenin Ravindranth; Newport, Calvin Charles; Balakrishnan, Hari; Madden, Samuel R. (USENIX Association, 2011-03)
    With the proliferation of mobile wireless devices such as smartphones and tablets that are used in a wide range of locations and movement conditions, it has become important for wireless protocols to adapt to different ...
  • Agarwal, Sameer; Milner, Henry; Kleiner, Ariel; Talwalkar, Ameet; Jordan, Michael; Mozafari, Barzan; Stoica, Ion; Madden, Samuel R. (Association for Computing Machinery (ACM), 2014-06)
    Modern data analytics applications typically process massive amounts of data on clusters of tens, hundreds, or thousands of machines to support near-real-time decisions.The quantity of data and limitations of disk and ...
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