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AT&T Intellectual Property
(46 results)-
Webcasts
On-Demand Webcast: IT As A Service
October 23, 2008, 12:00am PDT
The presenters of this webcast discuss the pros and cons of consuming IT resources and network bandwidth as an on-demand service. Benefits include a scalable infrastructure, usage-based pricing...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: When Is VPLS the Right Choice?
June 16, 2008, 12:00am PDT
Networking is constantly evolving, bringing new and demanding applications for today's enterprises to manage. Making WAN choices that will meet these needs is becoming increasingly difficult. VPLS...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Comparing WAN Technology Choices
January 1, 2009, 12:00am PST
As new applications are added to network, how to choose the right networking solution? Frame Relay, ATM, Ethernet, MPLS, IP VPNs, VPLS, Private Line, SONET and DWDM can all be used effectively to...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Web 2.0 for Your Business
March 25, 2008, 12:00am PDT
Due to a growing interest to improve collaboration, increase agility and save money, businesses are adopting Web 2.0 tools like wikis, blogs and document tagging. These components are part of an...
Provided by AT&T Intellectual Property
-
White Papers
FastRWeb: Fast Interactive Web Framework for Data Mining Using R
December 8, 2008, 12:00am PST
R is widely used and accepted as a very versatile tool for statistical computing and data analysis. It provides a plethora of cutting edge methods, tools and algorithms. However, typical data...
Provided by AT&T Intellectual Property
-
White Papers
Public Policy Principles for Promoting Efficient Wireless Innovation and Investment
September 30, 2009, 12:00am PDT
The Commission should employ a customer-centric approach to broadband policy generally and to policies that address wireless innovation and investment in particular. The proper focus of a...
Provided by AT&T Intellectual Property
-
White Papers
A Cryptographic File System for Unix
January 1, 2010, 12:00am PST
Although cryptographic techniques are playing an increasingly important role in modern computing system security, userlevel tools for encrypting file data are cumbersome and suffer from a number...
Provided by AT&T Intellectual Property
-
White Papers
Potential Benefits of Delta Encoding and Data Compression for HTTP
January 1, 2010, 12:00am PST
Caching in the World Wide Web currently follows a naive model, which assumes that resources are referenced many times between changes. The model also provides no way to update a cache entry if a...
Provided by AT&T Intellectual Property
-
White Papers
Power Control for Wireless Packet Voice With Application to EDGE System
January 1, 2010, 12:00am PST
In this paper, using the EDGE system as an example, the paper applies a Kalman-filter power control method based on interference tracking and prediction to packet voice service in wireless...
Provided by AT&T Intellectual Property
-
White Papers
Emerging Technology: Telepresence Solutions
November 25, 2008, 12:00am PST
Telepresence offers a completely new way to collaborate. This new technology enables connections across companies and locations, so that one can meet with customers, suppliers and business...
Provided by AT&T Intellectual Property
-
White Papers
Protocol and Network Design for Manageability
January 1, 2010, 12:00am PST
Designing an IP network is a challenging task that requires selecting from a wide variety of components, protocols, and mechanisms to meet current and future demands. Equally daunting, managing...
Provided by AT&T Intellectual Property
-
White Papers
Virtualization: An Overview
July 14, 2008, 12:00am PDT
Virtualization contributes to higher levels of business continuity in a couple of ways. For example, with the decoupling of software applications, operating systems and hardware platforms, fewer...
Provided by AT&T Intellectual Property
-
White Papers
Cloud Services: What Are They, What Value Do They Provide?
May 28, 2010, 12:00am PDT
Enterprises have traditionally been making new capital infrastructure investments to keep up with growing IT and Web demands. This approach is increasingly cost prohibitive and is becoming so...
Provided by AT&T Intellectual Property
-
White Papers
Network Monitoring for Video Quality Over IP
December 1, 2007, 12:00am PST
This paper considers the problem of predicting application-level video quality based on monitoring video packets within the network. The goal is to detect impairments (either server- or...
Provided by AT&T Intellectual Property
-
Case Studies
U.S. Olympic Training Centers: High-Speed Networking Aids the Quest for Gold
October 30, 2007, 12:00am PDT
The Olympic Training Centers need to create a rich development environment for the athletes training in hopes of making the U.S. Olympic Team or U.S. Paralympic Team, offering all the resources,...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Speeding Adoption of Enterprise 2.0
March 18, 2009, 12:00am PDT
The presenters discuss how Social Networking can be used effectively in a corporate environment for knowledge management, integration, business development and brand consolidation. The speed of...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: MPLS in 2009: Where to From Here?
February 25, 2009, 12:00am PST
With nearly 75% of all enterprises deploying MPLS for site-to-site connectivity, the question becomes "Now what?" The attendee will learn how to make the most of the MPLS network as the presenter...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Lowering the TCO for Business Applications
March 25, 2009, 12:00am PDT
Critical business applications require continuous care and investment. Now, more than ever, enterprises must ensure their applications scale to their changing business needs, without incurring...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: How Green Is Your IT?
September 26, 2008, 12:00am PDT
"Green IT" combines two different goals: cutting costs by reducing energy consumption and reducing an organization's carbon footprint for policy reasons beyond saving money. According to presenter...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Mobile Strategies and Direction
November 12, 2007, 12:00am PST
When it comes to handling mobility issues, moving from strategy to execution means defining the optimization plans and quantifying the results. The presenters give insights into the best practices...
Provided by AT&T Intellectual Property
-
White Papers
Multicast Topology Inference From Measured End-to-End Loss
January 1, 2009, 12:00am PST
The use of multicast inference on end-to-end measurement has recently been proposed as a means to infer network internal characteristics such as packet link loss rate and delay. This paper...
Provided by AT&T Intellectual Property
-
White Papers
Key Differences Between Web1.0 and Web2.0
February 13, 2008, 12:00am PST
Web 2.0 is a buzzword introduced in 2003/04 which is commonly used to encompass various novel phenomena on the World Wide Web. Although largely a marketing term, some of the key attributes...
Provided by AT&T Intellectual Property
-
White Papers
Perceptually-Based Data-Driven Join Costs: Comparing Join Types
January 1, 2009, 12:00am PST
Unit selection synthesis has improved the quality of synthetic speech by making it possible to concatenate speech from a large database to produce intelligible synthesis while preserving much of...
Provided by AT&T Intellectual Property
-
White Papers
XTreeNet: Scalable Overlay Networks for XML Content Dissemination and Querying (Synopsis)
January 1, 2009, 12:00am PST
XML is becoming a ubiquitous format for information exchange on the Internet. To alleviate the problems of "Whom to ask" and "Whom to tell" when connecting XML information producers with consumers...
Provided by AT&T Intellectual Property
-
White Papers
Design and Implementation of a Routing Control Platform
January 1, 2009, 12:00am PST
The routers in an Autonomous System (AS) must distribute the information they learn about how to reach external destinations. Unfortunately, today's internal Border Gateway Protocol (iBGP)...
Provided by AT&T Intellectual Property
-
White Papers
Trajectory Sampling for Direct Traffic Observation
January 1, 2009, 12:00am PST
Traffic measurement is a critical component for the control and engineering of communication networks. They argue that traffic measurement should make it possible to obtain the spatial flow of...
Provided by AT&T Intellectual Property
-
White Papers
Improving Preselection in Unit Selection Synthesis
January 1, 2009, 12:00am PST
Unit selection synthesis is a method of selecting and concatenating speech segments from a large single-speaker audio database to synthesize utterances. Selection is based on assigning target and...
Provided by AT&T Intellectual Property
-
White Papers
Pronunciation Lexicon Adaptation for TTS Voice Building
January 1, 2009, 12:00am PST
This paper describes reducing phone label errors in TTS voice building by means of modeling of speaker pronunciation variants. Each speaker has his or her own unique pronunciations (and...
Provided by AT&T Intellectual Property
-
White Papers
Charging From Sampled Network Usage
January 1, 2009, 12:00am PST
IP flows have heavy-tailed packet and byte size distributions. This make them poor candidates for uniform sampling-i.e. selecting 1 in N Flows-since omission or inclusion of a large flow can have...
Provided by AT&T Intellectual Property
-
White Papers
The Best of Both Worlds: Unifying Conventional Dialog Systems and POMDPs
June 20, 2008, 12:00am PDT
Partially Observable Markov Decision Processes (POMDPs) and conventional design practices offer two very different but complementary approaches to building spoken dialog systems. Whereas...
Provided by AT&T Intellectual Property
-
White Papers
Fast Indexes and Algorithms for Set Similarity Selection Queries
November 27, 2007, 12:00am PST
Data collections often have inconsistencies that arise due to a variety of reasons, and it is desirable to be able to identify and resolve them efficiently. Set similarity queries are commonly...
Provided by AT&T Intellectual Property
-
White Papers
Rule-Based Anomaly Detection on IP Flows
January 20, 2009, 12:00am PST
Rule-based packet classification is a powerful method for identifying traffic anomalies, with network security as a key application area. While popular systems like Snort are used in many network...
Provided by AT&T Intellectual Property
-
White Papers
CPM: Adaptive Video-on-Demand With Cooperative Peer Assists and Multicast
August 29, 2008, 12:00am PDT
This paper presents CPM, a unified approach that exploits server multicast, assisted by peer downloads, to provide efficient Video-on-Demand (VoD) in a service provider environment. They describe...
Provided by AT&T Intellectual Property
-
White Papers
OSPF Monitoring: Architecture, Design and Deployment Experience
January 1, 2009, 12:00am PST
Improving IP control plane (routing) robustness is critical to the creation of reliable and stable IP services. Yet very few tools exist for effective IP route monitoring and management. This...
Provided by AT&T Intellectual Property
-
White Papers
GMM/SVM N-Best Speaker Identification Under Mismatch Channel Conditions
January 17, 2008, 12:00am PST
Under severe channel mismatch conditions, such as training with far-field speech and testing with telephone data, performance of Speaker Identification (SID) degrades significantly, often below...
Provided by AT&T Intellectual Property
-
White Papers
Interleaver Design for Short Block Length Turbo Codes
January 1, 2009, 12:00am PST
The performance of a Turbo code depends on the interleaver design. There are two major criteria that can be considered in the design of an interleaver. Distance spectrum properties of the code and...
Provided by AT&T Intellectual Property
-
White Papers
Mining Customer Care Dialogs for "Daily News"
January 1, 2009, 12:00am PST
As large-scale deployments of spoken dialog systems in call centers become more common, a wealth of information is gathered about the call center business as well as the operation of these systems...
Provided by AT&T Intellectual Property
-
White Papers
DjVu: Analyzing and Compressing Scanned Documents for Internet Distribution
January 1, 2009, 12:00am PST
DjVu is an image compression technique specifically geared towards the compression of scanned documents in color at high resolution. Typical magazine pages in color scanned at 300dpi are...
Provided by AT&T Intellectual Property
-
White Papers
Demonstration of a POMDP Voice Dialer
April 14, 2008, 12:00am PDT
This paper is a demonstration of a voice dialer, implemented as a Partially Observable Markov Decision Process (POMDP). A real-time graphical display shows the POMDP's probability distribution...
Provided by AT&T Intellectual Property
-
White Papers
Speech-Plans: Generating Evaluative Responses in Spoken Dialogue
January 1, 2009, 12:00am PST
Recent paper on evaluation of spoken dialogue systems indicates that better algorithms are needed for the presentation of complex information in speech. Current dialogue systems often rely on...
Provided by AT&T Intellectual Property
-
White Papers
Cloud Services: What Are They, What Value Do They Provide?
May 28, 2010, 12:00am PDT
Enterprises have traditionally been making new capital infrastructure investments to keep up with growing IT and Web demands. This approach is increasingly cost prohibitive and is becoming so...
Provided by AT&T Intellectual Property
-
White Papers
Virtualization: An Overview
July 14, 2008, 12:00am PDT
Virtualization contributes to higher levels of business continuity in a couple of ways. For example, with the decoupling of software applications, operating systems and hardware platforms, fewer...
Provided by AT&T Intellectual Property
-
White Papers
Protocol and Network Design for Manageability
January 1, 2010, 12:00am PST
Designing an IP network is a challenging task that requires selecting from a wide variety of components, protocols, and mechanisms to meet current and future demands. Equally daunting, managing...
Provided by AT&T Intellectual Property
-
White Papers
Emerging Technology: Telepresence Solutions
November 25, 2008, 12:00am PST
Telepresence offers a completely new way to collaborate. This new technology enables connections across companies and locations, so that one can meet with customers, suppliers and business...
Provided by AT&T Intellectual Property
-
White Papers
Power Control for Wireless Packet Voice With Application to EDGE System
January 1, 2010, 12:00am PST
In this paper, using the EDGE system as an example, the paper applies a Kalman-filter power control method based on interference tracking and prediction to packet voice service in wireless...
Provided by AT&T Intellectual Property
-
White Papers
Potential Benefits of Delta Encoding and Data Compression for HTTP
January 1, 2010, 12:00am PST
Caching in the World Wide Web currently follows a naive model, which assumes that resources are referenced many times between changes. The model also provides no way to update a cache entry if a...
Provided by AT&T Intellectual Property
-
White Papers
A Cryptographic File System for Unix
January 1, 2010, 12:00am PST
Although cryptographic techniques are playing an increasingly important role in modern computing system security, userlevel tools for encrypting file data are cumbersome and suffer from a number...
Provided by AT&T Intellectual Property
-
White Papers
Public Policy Principles for Promoting Efficient Wireless Innovation and Investment
September 30, 2009, 12:00am PDT
The Commission should employ a customer-centric approach to broadband policy generally and to policies that address wireless innovation and investment in particular. The proper focus of a...
Provided by AT&T Intellectual Property
-
White Papers
FastRWeb: Fast Interactive Web Framework for Data Mining Using R
December 8, 2008, 12:00am PST
R is widely used and accepted as a very versatile tool for statistical computing and data analysis. It provides a plethora of cutting edge methods, tools and algorithms. However, typical data...
Provided by AT&T Intellectual Property
-
White Papers
Dialog Speech Acts and Prosody: Considerations for TTS
January 1, 2009, 12:00am PST
As natural language dialog systems involving both speech recognition and Text-To-Speech (TTS) synthesis become more sophisticated, the limitations of general-purpose TTS for human-computer dialogs...
Provided by AT&T Intellectual Property
-
White Papers
Importance Sampling Via Load-Balanced Facility Location
February 20, 2008, 12:00am PST
This paper considers the problem of "Importance sampling" from a high dynamic range image, motivated by a computer graphics problem called image-based lighting. Image-based lighting is a method to...
Provided by AT&T Intellectual Property
-
White Papers
Directed Graphs and Rectangular Layouts (Extended Abstract)
January 1, 2009, 12:00am PST
This paper deals with the problem, arising in practice, of drawing a directed graph as a collection of disjoint, isothetic rectangles, where the rectangles of the nodes of each edge must touch and...
Provided by AT&T Intellectual Property
-
White Papers
Design, Implementation and Operation of a Large Enterprise Content Distribution Network
January 1, 2009, 12:00am PST
Content Distribution Networks (CDNs) are becoming an important resource in enterprise networks. They are being used in applications ranging from broadcasted townhall-style meetings to the...
Provided by AT&T Intellectual Property
-
White Papers
Efficient Table Anonymization for Aggregate Query Answering
January 1, 2009, 12:00am PST
Privacy protection is a major concern when microdata need to be released for ad hoc analyses. This has led to a lot of recent research in privacy goals and table anonymization schemes, such as...
Provided by AT&T Intellectual Property
-
White Papers
Avoiding Instability During Graceful Shutdown of Multiple OSPF Routers
January 1, 2009, 12:00am PST
Many recent router architectures decouple the routing engine from the forwarding engine, allowing packet forwarding to continue even when the routing process is not active. This opens up the...
Provided by AT&T Intellectual Property
-
White Papers
Speech-Plans: Generating Evaluative Responses in Spoken Dialogue
January 1, 2009, 12:00am PST
Recent paper on evaluation of spoken dialogue systems indicates that better algorithms are needed for the presentation of complex information in speech. Current dialogue systems often rely on...
Provided by AT&T Intellectual Property
-
White Papers
Demonstration of a POMDP Voice Dialer
April 14, 2008, 12:00am PDT
This paper is a demonstration of a voice dialer, implemented as a Partially Observable Markov Decision Process (POMDP). A real-time graphical display shows the POMDP's probability distribution...
Provided by AT&T Intellectual Property
-
White Papers
DjVu: Analyzing and Compressing Scanned Documents for Internet Distribution
January 1, 2009, 12:00am PST
DjVu is an image compression technique specifically geared towards the compression of scanned documents in color at high resolution. Typical magazine pages in color scanned at 300dpi are...
Provided by AT&T Intellectual Property
-
White Papers
Mining Customer Care Dialogs for "Daily News"
January 1, 2009, 12:00am PST
As large-scale deployments of spoken dialog systems in call centers become more common, a wealth of information is gathered about the call center business as well as the operation of these systems...
Provided by AT&T Intellectual Property
-
White Papers
Interleaver Design for Short Block Length Turbo Codes
January 1, 2009, 12:00am PST
The performance of a Turbo code depends on the interleaver design. There are two major criteria that can be considered in the design of an interleaver. Distance spectrum properties of the code and...
Provided by AT&T Intellectual Property
-
White Papers
GMM/SVM N-Best Speaker Identification Under Mismatch Channel Conditions
January 17, 2008, 12:00am PST
Under severe channel mismatch conditions, such as training with far-field speech and testing with telephone data, performance of Speaker Identification (SID) degrades significantly, often below...
Provided by AT&T Intellectual Property
-
White Papers
OSPF Monitoring: Architecture, Design and Deployment Experience
January 1, 2009, 12:00am PST
Improving IP control plane (routing) robustness is critical to the creation of reliable and stable IP services. Yet very few tools exist for effective IP route monitoring and management. This...
Provided by AT&T Intellectual Property
-
White Papers
CPM: Adaptive Video-on-Demand With Cooperative Peer Assists and Multicast
August 29, 2008, 12:00am PDT
This paper presents CPM, a unified approach that exploits server multicast, assisted by peer downloads, to provide efficient Video-on-Demand (VoD) in a service provider environment. They describe...
Provided by AT&T Intellectual Property
-
White Papers
Rule-Based Anomaly Detection on IP Flows
January 20, 2009, 12:00am PST
Rule-based packet classification is a powerful method for identifying traffic anomalies, with network security as a key application area. While popular systems like Snort are used in many network...
Provided by AT&T Intellectual Property
-
White Papers
Fast Indexes and Algorithms for Set Similarity Selection Queries
November 27, 2007, 12:00am PST
Data collections often have inconsistencies that arise due to a variety of reasons, and it is desirable to be able to identify and resolve them efficiently. Set similarity queries are commonly...
Provided by AT&T Intellectual Property
-
White Papers
The Best of Both Worlds: Unifying Conventional Dialog Systems and POMDPs
June 20, 2008, 12:00am PDT
Partially Observable Markov Decision Processes (POMDPs) and conventional design practices offer two very different but complementary approaches to building spoken dialog systems. Whereas...
Provided by AT&T Intellectual Property
-
White Papers
Charging From Sampled Network Usage
January 1, 2009, 12:00am PST
IP flows have heavy-tailed packet and byte size distributions. This make them poor candidates for uniform sampling-i.e. selecting 1 in N Flows-since omission or inclusion of a large flow can have...
Provided by AT&T Intellectual Property
-
White Papers
Pronunciation Lexicon Adaptation for TTS Voice Building
January 1, 2009, 12:00am PST
This paper describes reducing phone label errors in TTS voice building by means of modeling of speaker pronunciation variants. Each speaker has his or her own unique pronunciations (and...
Provided by AT&T Intellectual Property
-
White Papers
Improving Preselection in Unit Selection Synthesis
January 1, 2009, 12:00am PST
Unit selection synthesis is a method of selecting and concatenating speech segments from a large single-speaker audio database to synthesize utterances. Selection is based on assigning target and...
Provided by AT&T Intellectual Property
-
White Papers
Trajectory Sampling for Direct Traffic Observation
January 1, 2009, 12:00am PST
Traffic measurement is a critical component for the control and engineering of communication networks. They argue that traffic measurement should make it possible to obtain the spatial flow of...
Provided by AT&T Intellectual Property
-
White Papers
Design and Implementation of a Routing Control Platform
January 1, 2009, 12:00am PST
The routers in an Autonomous System (AS) must distribute the information they learn about how to reach external destinations. Unfortunately, today's internal Border Gateway Protocol (iBGP)...
Provided by AT&T Intellectual Property
-
White Papers
XTreeNet: Scalable Overlay Networks for XML Content Dissemination and Querying (Synopsis)
January 1, 2009, 12:00am PST
XML is becoming a ubiquitous format for information exchange on the Internet. To alleviate the problems of "Whom to ask" and "Whom to tell" when connecting XML information producers with consumers...
Provided by AT&T Intellectual Property
-
White Papers
Perceptually-Based Data-Driven Join Costs: Comparing Join Types
January 1, 2009, 12:00am PST
Unit selection synthesis has improved the quality of synthetic speech by making it possible to concatenate speech from a large database to produce intelligible synthesis while preserving much of...
Provided by AT&T Intellectual Property
-
White Papers
Key Differences Between Web1.0 and Web2.0
February 13, 2008, 12:00am PST
Web 2.0 is a buzzword introduced in 2003/04 which is commonly used to encompass various novel phenomena on the World Wide Web. Although largely a marketing term, some of the key attributes...
Provided by AT&T Intellectual Property
-
White Papers
Multicast Topology Inference From Measured End-to-End Loss
January 1, 2009, 12:00am PST
The use of multicast inference on end-to-end measurement has recently been proposed as a means to infer network internal characteristics such as packet link loss rate and delay. This paper...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Mobile Strategies and Direction
November 12, 2007, 12:00am PST
When it comes to handling mobility issues, moving from strategy to execution means defining the optimization plans and quantifying the results. The presenters give insights into the best practices...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: How Green Is Your IT?
September 26, 2008, 12:00am PDT
"Green IT" combines two different goals: cutting costs by reducing energy consumption and reducing an organization's carbon footprint for policy reasons beyond saving money. According to presenter...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: IT As A Service
October 23, 2008, 12:00am PDT
The presenters of this webcast discuss the pros and cons of consuming IT resources and network bandwidth as an on-demand service. Benefits include a scalable infrastructure, usage-based pricing...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Web 2.0 for Your Business
March 25, 2008, 12:00am PDT
Due to a growing interest to improve collaboration, increase agility and save money, businesses are adopting Web 2.0 tools like wikis, blogs and document tagging. These components are part of an...
Provided by AT&T Intellectual Property
-
Webcasts
On-Demand Webcast: Comparing WAN Technology Choices
January 1, 2009, 12:00am PST
As new applications are added to network, how to choose the right networking solution? Frame Relay, ATM, Ethernet, MPLS, IP VPNs, VPLS, Private Line, SONET and DWDM can all be used effectively to...
Provided by AT&T Intellectual Property
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