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Displaying 1-36 out of 36 total
Services Research at IBM
Found in: Web Services, IEEE International Conference on
By Robert Morris
Issue Date:July 2007
pp. xxix
This talk will share with the technical community on some directions of Services Research at IBM.
   
Filtered-Push: A Map-Reduce Platform for Collaborative Taxonomic Data Management
Found in: Computer Science and Information Engineering, World Congress on
By Zhimin Wang, Hui Dong, Maureen Kelly, James A. Macklin, Paul J. Morris, Robert A. Morris
Issue Date:April 2009
pp. 731-735
The Filtered-Push project aims to establish a cross-institutional infrastructure to help biologists (especially taxonomists) share and improve digitized natural history collection data via the exchange and management of specimen record annotations. Three c...
 
Smarter Cities and Their Innovation Challenges
Found in: Computer
By Milind Naphade, Guruduth Banavar, Colin Harrison, Jurij Paraszczak, Robert Morris
Issue Date:June 2011
pp. 32-39
The transformation to smarter cities will require innovation in planning, management, and operations. Several ongoing projects around the world illustrate the opportunities and challenges of this transformation.
 
A Workflow Model for Earth Observation Sensor Webs
Found in: Space Mission Challenges for Information Technology, IEEE International Conference on
By Robert Morris, Jennifer Dungan, Petr Votava
Issue Date:July 2009
pp. 69-76
An Earth science sensor web consists of a distributed collection of sensors, Earth science models, human scientists and information technologists, and data archives. The scientific use of the sensor web consists broadly of seeking to improve the understand...
 
Recovering asynchronouswatermark tones from speech
Found in: Acoustics, Speech, and Signal Processing, IEEE International Conference on
By Robert Morris, Ralph Johnson, Vladimir Goncharoff, Joseph DiVita
Issue Date:April 2009
pp. 1405-1408
A new, low complexity method facilitates low burden embedding and recovery of tonal watermarks in speech. A watermark composed of a periodically extended sequence of sub-audible DTMF tones is added to speech asynchronously, without regard to momentary spee...
 
Greedy Virtual Coordinates for Geographic Routing
Found in: Network Protocols, IEEE International Conference on
By Ben Leong, Barbara Liskov, Robert Morris
Issue Date:October 2007
pp. 71-80
We present a new approach for generating virtual coordinates that produces usable coordinates quickly and improves the routing performance of existing geographic routing algorithms. Starting from a set of initial coordinates derived from a set of elected p...
 
An Information Infrastructure for Coordinating Earth Science Observations
Found in: Space Mission Challenges for Information Technology, IEEE International Conference on
By Robert A. Morris, Jennifer L. Dungan, John L. Bresina
Issue Date:July 2006
pp. 397-404
Earth scientists require timely, coordinated access to remote sensing resources, either directly by requesting that the resource be targeted at a specific location, or indirectly through access to data that has been, or will be acquired and stored in data ...
 
Designing a Framework for Active Worm Detection on Global Networks
Found in: Innovative Architecture for Future Generation High-Performance Processors and Systems, International Workshop on
By Vincent Berk, George Bakos, Robert Morris
Issue Date:March 2003
pp. 13
<p>Past active Internet worms have caused widespread damage. Knowing the connection characteristics of such a worm very early in its proliferation cycle might provide first responders an opportunity to intercept a global scale epidemic.</p> <...
 
The Case for Resilient Overlay Networks
Found in: Hot Topics in Operating Systems, Workshop on
By David G. Andersen, Hari Balakrishnan, M. Frans Kaashoek, Robert Morris
Issue Date:May 2001
pp. 0152
Abstract: This paper makes the case for Resilient Overlay Networks (RONs), an application-level routing and packet forwarding service that gives end-hosts and applications the ability to take advantage of network paths that traditional Internet routing can...
 
Building Peer-to-Peer Systems with Chord, a Distributed Lookup Service
Found in: Hot Topics in Operating Systems, Workshop on
By Frank Dabek, Emma Brunskill, M. Frans Kaashoek, David Karger, Robert Morris, Ion Stoica, Hari Balakrishnan
Issue Date:May 2001
pp. 0081
Abstract: We argue that the core problem facing peer-to-peer systems is locating documents in a decentralized network and propose Chord, a distributed lookup primitive. Chord provides an efficient method of locating documents while placing few constraints ...
 
Optimization in Constraint Reasoning about Repeating Events
Found in: Temporal Representation and Reasoning, International Syposium on
By Robert A. Morris, Lina Khatib
Issue Date:May 1999
pp. 82
The effective manipulation of temporal information about periodic events is required for solving complex problems such as long range scheduling or querying temporal information. Further more, many problems involving repeating events require the optimizatio...
 
Generating Scenarios for Periodic Events with Binary Constraints
Found in: Temporal Representation and Reasoning, International Syposium on
By Lina Khatib, Robert A. Morris
Issue Date:May 1999
pp. 67
Reasoning with repeating events differs from reasoning about single events primarily in the fact that with the former the available information about aspects such as the number and period of the events may be indefinite. Much useful knowledge about repeati...
 
Bulk Multicast Transport Protocol
Found in: IEEE Computer and Communications Societies, Annual Joint Conference of the
By Robert Morris
Issue Date:April 1997
pp. 455
BMTP offers rate controlled multicast with reliability, high throughput, and support for large numbers of receivers. A multicast sender needs feedback from receivers to recover from errors and to choose an appropriate send rate, but must avoid being overwh...
 
NFS Dynamics Over Flow-Controlled Wide Area Networks
Found in: IEEE Computer and Communications Societies, Annual Joint Conference of the
By Koling Chang, Robert Morris, H.T. Kung
Issue Date:April 1997
pp. 619
The Network File System protocol (NFS) has been the leading distributed file system for workstations since it was first introduced by Sun Microsystems in 1986. The geographical scale of NFS has been limited to the local area due to its relatively low perfo...
 
Guest Editor's Introduction: Floating-Point Digital Signal Processing Chips, A New Era for DSP Systems Design?
Found in: IEEE Micro
By Stephen A. Dyer, L. Robert Morris
Issue Date:November 1988
pp. 10-12
No summary available.
   
A PC-Based Digital Speech Spectrograph
Found in: IEEE Micro
By L. Robert Morris
Issue Date:November 1988
pp. 68-85
<p>The author describes how a TMS32010-based Tl-speech PC board from Texas Instruments was combined with an off-the-shelf, PC graphics board to produce a real-time speech spectrograph system. The Realtime Spectral Lab (RSL) is a relatively inexpensiv...
 
Privacy-preserving browser-side scripting with BFlow
Found in: Proceedings of the fourth ACM european conference on Computer systems (EuroSys '09)
By Alexander Yip, Maxwell Krohn, Neha Narula, Robert Morris
Issue Date:April 2009
pp. 29-32
Some web sites provide interactive extensions using browser scripts, often without inspecting the scripts to verify that they are benign and bug-free. Others handle users' confidential data and display it via the browser. Such new features contribute to th...
     
Architecture and evaluation of an unplanned 802.11b mesh network
Found in: Proceedings of the 11th annual international conference on Mobile computing and networking (MobiCom '05)
By Daniel Aguayo, John Bicket, Robert Morris, Sanjit Biswas
Issue Date:August 2005
pp. 31-42
This paper evaluates the ability of a wireless mesh architecture to provide high performance Internet access while demanding little deployment planning or operational management. The architecture considered in this paper has unplanned node placement (rathe...
     
ExOR: opportunistic multi-hop routing for wireless networks
Found in: Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications (SIGCOMM '05)
By Robert Morris, Sanjit Biswas
Issue Date:August 2005
pp. 133-144
This paper describes ExOR,an integrated routing and MAC protocol that increases the throughput of large unicast transfers in multi-hop wireless networks. ExOR chooses each hop of a packet's route after the transmission for that hop, so that the choice can ...
     
Link-level measurements from an 802.11b mesh network
Found in: Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications (SIGCOMM '04)
By Daniel Aguayo, Glenn Judd, John Bicket, Robert Morris, Sanjit Biswas
Issue Date:August 2004
pp. 95-104
This paper analyzes the causes of packet loss in a 38-node urban multi-hop 802.11b network. The patterns and causes of loss are important in the design of routing and error-correction protocols, as well as in network planning.The paper makes the following ...
     
Vivaldi: a decentralized network coordinate system
Found in: Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications (SIGCOMM '04)
By Frank Dabek, Frans Kaashoek, Robert Morris, Russ Cox
Issue Date:August 2004
pp. 95-104
Large-scale Internet applications can benefit from an ability to predict round-trip times to other hosts without having to contact them first. Explicit measurements are often unattractive because the cost of measurement can outweigh the benefits of exploit...
     
Tarzan: a peer-to-peer anonymizing network layer
Found in: Proceedings of the 9th ACM conference on Computer and communications security (CCS '02)
By Michael J. Freedman, Robert Morris
Issue Date:November 2002
pp. 193-206
Tarzan is a peer-to-peer anonymous IP network overlay. Because it provides IP service, Tarzan is general-purpose and transparent to applications. Organized as a decentralized peer-to-peer overlay, Tarzan is fault-tolerant, highly scalable, and easy to mana...
     
Programming language optimizations for modular router configurations
Found in: Tenth international conference on architectural support for programming languages and operating systems on Proceedings of the 10th international conference on architectural support for programming languages and operating systems (ASPLOS-X) (ASPLOS '02)
By Benjie Chen, Eddie Kohler, Robert Morris
Issue Date:October 2002
pp. 205-209
Networking systems such as Ensemble, the x-kernel, Scout, and Click achieve flexibility by building routers and other packet processors from modular components. Unfortunately, component designs are often slower than purpose-built code, and routers in parti...
     
DNS performance and the effectiveness of caching
Found in: Proceedings of the First ACM SIGCOMM Workshop on Internet Measurement Workshop (IMW '01)
By Emil Sit, Hari Balakrishnan, Jaeyeon Jung, Robert Morris
Issue Date:November 2001
pp. 153-167
This paper presents a detailed analysis of traces of DNS and associated TCP traffic collected on the Internet links of the MIT Laboratory for Computer Science and the Korea Advanced Institute of Science and Technology (KAIST). The first part of the analysi...
     
Wide-area cooperative storage with CFS
Found in: Proceedings of the eighteenth ACM symposium on Operating systems principles (SOSP '01)
By David Karger, Frank Dabek, Ion Stoica, M. Frans Kaashoek, Robert Morris
Issue Date:October 2001
pp. 180-189
The Cooperative File System (CFS) is a new peer-to-peer read-only storage system that provides provable guarantees for the efficiency, robustness, and load-balance of file storage and retrieval. CFS does this with a completely decentralized architecture th...
     
Resilient overlay networks
Found in: Proceedings of the eighteenth ACM symposium on Operating systems principles (SOSP '01)
By David Andersen, Frans Kaashoek, Hari Balakrishnan, Robert Morris
Issue Date:October 2001
pp. 180-189
A Resilient Overlay Network (RON) is an architecture that allows distributed Internet applications to detect and recover from path outages and periods of degraded performance within several seconds, improving over today's wide-area routing protocols that t...
     
Chord: A scalable peer-to-peer lookup service for internet applications
Found in: Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications (SIGCOMM '01)
By David Karger, Hari Balakrishnan, Ion Stoica, M. Frans Kaashoek, Robert Morris
Issue Date:August 2001
pp. 149-160
Routers must do a best matching prefix lookup for every packet; solutions for Gigabit speeds are well known. As Internet link speeds higher, we seek a scalable solution whose speed scales with memory speeds while allowing large prefix databases. In this pa...
     
Span: An energy-efficient coordination algorithm for topology maintenance in Ad Hoc wireless networks
Found in: Proceedings of the seventh annual international conference on Mobile computing and networking (MobiCom '01)
By Benjie Chen, Hari Balakrishnan, Kyle Jamieson, Robert Morris
Issue Date:July 2001
pp. 85-96
This paper presents Span, a power saving technique for multi-hop ad hoc wireless networks that reduces energy consumption without significantly diminishing the capacity or connectivity of the network. Span builds on the observation that when a region of a ...
     
Capacity of Ad Hoc wireless networks
Found in: Proceedings of the seventh annual international conference on Mobile computing and networking (MobiCom '01)
By Charles Blake, Douglas S.J. De Couto, Hu Imm Lee, Jinyang Li, Robert Morris
Issue Date:July 2001
pp. 61-69
Early simulation experience with wireless ad hoc networks suggests that their capacity can be surprisingly low, due to the requirement that nodes forward each others' packets. The achievable capacity depends on network size, traffic patterns, and detailed ...
     
CarNet: a scalable ad hoc wireless network system
Found in: Proceedings of the 9th workshop on ACM SIGOPS European workshop: beyond the PC: new challenges for the operating system (EW 9)
By Douglas Decouto, Frans Kaashoek, Jinyang Li, John Jannotti, Robert Morris
Issue Date:September 2000
pp. 61-65
CarNet is an application for a large ad hoc mobile network system that scales well without requiring a fixed network infrastructure to route messages. CarNet places radio nodes in cars, which communicate using Grid, a novel scalable routing system. Grid us...
     
A scalable location service for geographic ad hoc routing
Found in: Proceedings of the sixth annual international conference on Mobile computing and networking (MobiCom '00)
By David R. Karger, Douglas S. J. De Couto, Jinyang Li, John Jannotti, Robert Morris
Issue Date:August 2000
pp. 120-130
GLS is a new distributed location service which tracks mobile node locations. GLS combined with geographic forwarding allows the construction of ad hoc mobile networks that scale to a larger number of nodes than possible with previous work. GLS is decentra...
     
The Click modular router
Found in: Proceedings of the seventeenth ACM symposium on Operating systems principles (SOSP '99)
By Eddie Kohler, John Jannotti, M. Frans Kaashoek, Robert Morris
Issue Date:December 1999
pp. 180-189
Click is a new software architecture for building flexible and configurable routers. A Click router is assembled from packet processing modules called elements. Individual elements implement simple router functions like packet classification, queueing, sch...
     
Dynamics of random early detection
Found in: Proceedings of the ACM SIGCOMM '97 conference on Applications, technologies, architectures, and protocols for computer communication (SIGCOMM '97)
By Dong Lin, Robert Morris
Issue Date:September 1997
pp. 406-415
In this paper we evaluate the effectiveness of Random Early Detection (RED) over traffic types categorized as non-adaptive, fragile and robust, according to their responses to congestion. We point out that RED allows unfair bandwidth sharing when a mixture...
     
The click modular router
Found in: ACM Transactions on Computer Systems (TOCS)
By Benjie Chen, Eddie Kohler, John Jannotti, M. Frans Kaashoek, Robert Morris
Issue Date:February 1992
pp. 263-297
Clicks is a new software architecture for building flexible and configurable routers. A Click router is assembled from packet processing modules called elements. Individual elements implement simple router functions like packet classification, queuing, sch...
     
Looking up data in P2P systems
Found in: Communications of the ACM
By David Karger, Hari Balakrishnan, Ion Stoica, M. Frans Kaashoek, Robert Morris
Issue Date:January 1988
pp. 43-48
The main challenge in P2P computing is to design and implement a robust and scalable distributed system composed of inexpensive, individually unreliable computers in unrelated administrative domains. The participants in a typical P2P system might include c...
     
Scatter storage techniques
Found in: Communications of the ACM
By Robert Morris
Issue Date:January 1968
pp. 38-44
Several years ago there was an attempt in Washington to place the selection of government computers in a central, highly placed office. Individual government agencies, led by the Department of Defense, successfully beat back this attempt. Today, two years ...
     
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