180 Park Ave - Building 103
Florham Park, NJ
Subject matter expert in Collaboration Technology, VoIP Services, Digital Cities, Social Networking
PhD from the University of California at Berkeley in Chemical Engineering
Project Space,
Collaborative, customizable web workplace that organizes project resources—files, email & voicemail, distribution lists, discussion groups, etc.—and includes dial-less phone communication.
Route Classification using Cellular Handoff Patterns
Christopher Volinsky, Alexander Varshavsky, Richard Becker, Ji Loh, Simon Urbanek, Ramon Caceres, Karrie Hanson
13th ACM International Conference on Ubiquitous Computing,
2011.
[PDF]
[BIB]
ACM Copyright
(c) ACM, 2011. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in 13th ACM International Conference on Ubiquitous Computing , 2011-09-01.
{Understanding utilization of city roads is important for urban planners. In this paper, we show how to use cellular hand- off patterns from cellular phone networks to identify which routes people take through a city. Specifically, this paper makes the following three contributions. First, we show that cellular handoff patterns on a given route are stable across a range of conditions and propose a way to measure stability within and between routes using a variant of Earth Mover�s Distance. Second, we present two accurate classification al- gorithms for matching cellular handoff patterns to routes: one requires test drives on the routes while the other uses signal strength data collected by high-resolution scanners. Finally, we present an application of our algorithms for mea- suring relative volumes of traffic on routes leading into and out of a specific city, and validate our methods using statis- tics published by a state transportation authority.}
Clustering Anonymized Mobile Call Detail Records to Find Usage Groups
Christopher Volinsky, Richard Becker, Ramon Caceres, Karrie Hanson, Ji Loh, Simon Urbanek, Alexander Varshavsky
1st Workshop on Pervasive Urban Applications (PURBA),
2011.
[PDF]
[BIB]
Springer Copyright
The definitive version was published in PURBA-2011. , 2011-06-12
{Understanding the mix of different types of people in a city is an important input into urban planning. In this paper we identify distinct sectors of a population by their cellular phone usage. In a study of a small suburban city in New Jersey, we use unsupervised clustering to identify the usage patterns of heavy users . We uncover 7 unique usage patterns. We interpret two of the patterns as belonging to commuters and students, and verify these interpretations with deeper analysis of temporal and spatial patterns. }
A Tale of One City: Using Cellular Network Data for Urban Planning
Richard Becker, Ramon Caceres, Karrie Hanson, Ji Loh, Simon Urbanek, Alexander Varshavsky, Christopher Volinsky
IEEE Pervasive Computing ,
2010.
[PDF]
[BIB]
IEEE Copyright
The definitive version was published in IEEE Pervasive Computing , 2010-04-01, URL: https://ecopyright.ieee.org/ECTT/login.jsp Username: SCHPCSI-2011-01-0005 Password: 1295115660850
{The rapid growth of modern cities leaves urban planners faced with numerous challenges, such as high congestion and pollution levels. Effectively solving these challenges re- quires a deep understanding of existing city dynamics. In this paper, we describe methodology to study and monitor these dynamics by using Call Detail Records (CDRs), rou- tinely collected by wireless service providers as part of run- ning their networks. Our methodology scales to an entire population, has little additional cost, and can be continually updated. This provides an unprecedented opportunity to study and monitor cities in a way that current practices are not able to do.}
Method And Apparatus For Providing Spontaneous Multi-Way Telephone Conversation With Inserted Messaging,
February 7, 2012
The present invention provides a method for simultaneously broadcasting a message to a plurality of end-point devices. More specifically, the present invention receives a request to initiate a teleconference from a subscriber. The plurality of end-point devices is then invited to join the teleconference.
Method And Apparatus For Providing Spontaneous Multi-Way Telephone Conversation With Inserted Messaging,
February 16, 2010
The present invention provides a method for simultaneously broadcasting a message to a plurality of end-point devices. More specifically, the present invention receives a request to initiate a teleconference from a subscriber. The plurality of end-point devices is then invited to join the teleconference.
Method And Apparatus For Providing Asynchronous Audio Messaging,
September 22, 2009
The present invention provides audio messaging in a communications network, e.g., a VoIP network. More specifically, the present invention establishes a non-duplex communication link between a first subscriber and a second subscriber. Audio messages are transmitted between the first subscriber and the second subscriber via the non-duplex communication link.
Enhanced call feature service,
January 16, 2007
The present invention provides a system and method for managing calls for a subscriber, including accessing a calling plan while the subscriber is in an existing active call with at least one other party. The call is placed or received by the subscriber at a first device. At least one service feature of the calling plan is invoked during the active call. This service feature includes an add callers feature for adding at least one additional party to the existing active call between the subscriber and the other party. The service feature additionally includes a transfer devices feature for transferring the existing active call to at least one additional device of the subscriber and hanging up on the first device by the subscriber to confirm the transfer of the call to the additional device.
Update of web audio messages via audio user interface,
December 10, 2002
A method and system are disclosed for updating announcements on a packet network site such as a website. An exemplary method includes receiving an announcement through an audio interface and storing the announcement on a website server. In accordance with the exemplary method, merchants without Internet access can now update announcements on their websites quickly and economically by using an audio interface such as a conventional telephone. The updated announcements may be either audio or data. If the announcement received in the exemplary method is an audio announcement, it is converted from a first audio format into a second audio format prior to the step of storing the announcement. Whether the announcements are audio or data, the merchants' customers can then retrieve them by accessing the merchants' websites via the Internet.
Method and apparatus to provide enhanced directory assistance information in a communication network,
October 15, 2002
A method and apparatus that provide enhanced directory assistance information. An operator receives a request for directory information about a listed party over a telephone connection. It is then determined if enhanced directory information for the listed party is available in an enhanced information database. The enhanced directory information associated with the listed party is retrieved, from the enhanced information database, as a script that incorporates the enhanced directory information. The enhanced directory information can then be provided using the script. The enhanced directory information can be stored, for example, on a Web server that is updated by the listed party and the information can be transferred using a Phone Markup Language script.
Method and apparatus to provide enhanced directory assistance information in a communication network,
July 31, 2001
An operator receives a request for directory information about a listed party over a telephone connection. It is then determined if enhanced directory information for the listed party is available in an enhanced information database. The enhanced directory information associated with the listed party is retrieved, from the enhanced information database, as a script that incorporates the enhanced directory information. The enhanced directory information can then be provided using the script. The enhanced directory information can be stored, for example, on a Web server that is updated by the listed party and the information can be transferred using a Phone Markup Language script.
Network-based traffic congestion notification service,
June 26, 2001
A server platform in the PSTN performs the service of calling the subscriber if the subscriber's customary commuting route is congested. The service makes an initial call when the fastest commute route is congested. It also makes additional calls each time it finds a better alternate route. The server can accommodate any subscriber commuting pattern. If a street on the subscriber's customary route is found to be congested, then the server sequentially tests additional streets having geographic coordinates nearby, dynamically searching for an alternate route that has an acceptable level of congestion. The server has a voice response unit (VRU) in the platform, to announce to the subscriber that the subscriber's customary commuting route is congested. Following an initial call to the subscriber, the server continues to search for better alternate routes having the least congestion and it calls the subscriber again if it finds a better alternate route.
