Though the common conception of human-computer interfaces is one of screens and keyboards, the em... more Though the common conception of human-computer interfaces is one of screens and keyboards, the emergence of ubiquitous computing envisions interfaces that will spread from the desktop into our environments. This gives rise to the development of novel interaction devices and the augmentation of common everyday objects to serve as interfaces between the physical and the virtual. Previous work has provided exemplars of such everyday objects augmented with interactive behaviour. We propose that richer opportunities arise when collections of everyday objects are considered as substrate for interfaces. In an initial case study we have taken clothes hangers as an example and augmented them to collectively function as an information display.
Search all the public and authenticated articles in CiteULike. Include unauthenticated results to... more Search all the public and authenticated articles in CiteULike. Include unauthenticated results too (may include "spam") Enter a search phrase. You can also specify a CiteULike article id (123456),. a DOI (doi:10.1234/12345678). or a PubMed ID (pmid:12345678). Click Help for advanced usage. CiteULike, Group: CMU-HCII, Search, Register, Log in, ...
Dealing with uncertainty in Bayesian Network structures using maximum a posteriori (MAP) estimati... more Dealing with uncertainty in Bayesian Network structures using maximum a posteriori (MAP) estimation or Bayesian Model Averaging (BMA) is often intractable due to the superexponential number of possible directed, acyclic graphs. When the prior is decomposable, two classes of graphs where efficient learning can take place are treestructures, and fixed-orderings with limited in-degree. We show how MAP estimates and BMA for selectively conditioned forests (SCF), a combination of these two classes, can be computed efficiently for ordered sets of variables. We apply SCFs to temporal data to learn Dynamic Bayesian Networks having an intra-timestep forest and inter-timestep limited in-degree structure, improving model accuracy over DBNs without the combination of structures. We also apply SCFs to Bayes Net classification to learn selective forestaugmented NaĂŻve Bayes classifiers. We argue that the built-in feature selection of selective augmented Bayes classifiers makes them preferable to similar non-selective classifiers based on empirical evidence.
Applications are often designed to take advantage of the potential for integration with each othe... more Applications are often designed to take advantage of the potential for integration with each other via shared information. Current approaches for integration are limited, affecting both the programmer and end-user. In this paper, we present CyberDesk, a framework for self-integrating software in which integration is driven by user context. It relieves the burden on programmers by removing the necessity to predict how software should be integrated. It also relieves the burden from users by removing the need to understand how to make different software components work together. á§
As we enable everyday environments with ubiquitous technology, there are many opportunities to su... more As we enable everyday environments with ubiquitous technology, there are many opportunities to support simple activities in useful ways. We are investigating how an environment made aware of the location and activities of its occupants can better support direct human-human communication. Specifically, we have instrumented a home to explore lightweight, spontaneous hands-free communication between residents in different parts of the home. Our working prototype demonstrates how existing technologies of voice recognition, indoor positioning and audio routing lay the foundation for the exploration of a variety of more intelligent alternatives to the traditional home intercom system. We show how context can be used to mediate the initiation and management of one-and two-way audio connections between residents, supporting a range of within-home conversational patterns. In this paper, we describe a variety of home communication scenarios and the general infrastructure we have built to explore them.
Active environments -those with sensing and actuation capabilitiesare often difficult for end use... more Active environments -those with sensing and actuation capabilitiesare often difficult for end users to control. We describe the design and implementation of a system, SiteView, for creating and viewing automation control rules. Sit eView has an intuitive tangible interaction method for creat ing control rules and enhances user understanding of the system by appropriately exposing internal state. SiteView also supports users' visualization of the active environment outside the programming environment through a photographic display keyed to control rule conditions. We demonstrate SiteView's usefulness through example control rules.
Although context-awareness is a key component for perceptual user interfaces, we lack generic inf... more Although context-awareness is a key component for perceptual user interfaces, we lack generic infrastructures for developing context-aware applications. We propose a generic infrastructure based on context servers that store, share and archive contextual data. We describe a few applications we have built that take advantage of context sharing and context history and then turn to the overall design of our context server.
Abstract With a focus on presenting information at the right time, the ubicomp community can bene... more Abstract With a focus on presenting information at the right time, the ubicomp community can benefit greatly from learning the most salient human measures of cognitive load. Cognitive load can be used as a metric to determine when or whether to interrupt a user. In this paper, we collected data from multiple sensors and compared their ability to assess cognitive load. Our focus is on visual perception and cognitive speed-focused tasks that leverage cognitive abilities common in ubicomp applications.
Page 1. Supporting the Construction of Context-Aware Applications Anind K. Dey Intel Berkeley Lab... more Page 1. Supporting the Construction of Context-Aware Applications Anind K. Dey Intel Berkeley Lab Intel Research Page 2. 9/17/2001 3 How UbiComp is Different from Traditional GUI • Not only direct interaction for input and output • Need to use RANGE of explicit AND implicit interaction • Different computing paradigm Page 3.
The typical user is no longer facing a desktop machine in the relatively predictable office envir... more The typical user is no longer facing a desktop machine in the relatively predictable office environment. Rather, users have to deal with diverse devices, mobile or fixed, sporting diverse interfaces and used in diverse environments. In appearance, this phenomenon is a step towards the realization of Mark Weiser's ubiquitous computing paradigm, or 'third wave of computing', where specialized devices outnumber users [Weiser 1991].
Abstract Sharing sensitive context information among multiple distributed components in mobile en... more Abstract Sharing sensitive context information among multiple distributed components in mobile environments introduces major security concerns. The distributed sensing, processing and actuating components of these applications can be compromised and modified or impersonated to extract private and confidential information or to inject false information. In this paper we present the Anubis protocol for remote code attestation and access control of distributed components using remote execution of trusted code.
ABSTRACT Since a shopper can't bring a room from their house with them when they shop for a house... more ABSTRACT Since a shopper can't bring a room from their house with them when they shop for a household item, they have to make their choice based on what they imagine the object would look like in a particular room. The result of a tangible interaction research project, the Virtual Wall solves this problem by allowing a shopper to add a proportionally sized image of the item to a picture of the room that they brought with them to the store or is already in their web account.
ABSTRACT Rising power demands resulting from technological advancements is an increasingly import... more ABSTRACT Rising power demands resulting from technological advancements is an increasingly important global issue. One way to tackle this problem is to motivate individual behavior change, for which the ubiquity of mobile phones offer an ideal platform to influence consumption behavior of users.
We use computing devices at work, at home and on the go. We generate huge amount of data that is ... more We use computing devices at work, at home and on the go. We generate huge amount of data that is stored (either temporarily or permanent) on our machines or on remote servers. There is a lot of value in this information and many external parties already further exploit some of it. So, if others consider our information important why don't we take proper advantage of it? How can we use the information we generate to our own advantage? How can we use this information to improve our lives and support our wellbeing? And how can we create better environments that will be able to offer more personalized and engaging interfaces supporting such diversity of information? We offer here our answer to such questions by presenting the MyRoR system with its main goals of better supporting self-understanding and offer more natural interfaces for information visualizations, based on personalized and interactive stories.
Abstract People consider other people who resemble them to be more persuasive. Users may consider... more Abstract People consider other people who resemble them to be more persuasive. Users may consider embodied conversational agents, or ECAs, to be more persuasive if the agents resemble them. In an experimental study, we found that users rated the persuasiveness of agents that resemble them higher than other agents. However, actual advice-taking diverged from this pattern; when users created the agents, users changed their choices less when interacting with the agents that resembled them.
Though the common conception of human-computer interfaces is one of screens and keyboards, the em... more Though the common conception of human-computer interfaces is one of screens and keyboards, the emergence of ubiquitous computing envisions interfaces that will spread from the desktop into our environments. This gives rise to the development of novel interaction devices and the augmentation of common everyday objects to serve as interfaces between the physical and the virtual. Previous work has provided exemplars of such everyday objects augmented with interactive behaviour. We propose that richer opportunities arise when collections of everyday objects are considered as substrate for interfaces. In an initial case study we have taken clothes hangers as an example and augmented them to collectively function as an information display.
Search all the public and authenticated articles in CiteULike. Include unauthenticated results to... more Search all the public and authenticated articles in CiteULike. Include unauthenticated results too (may include "spam") Enter a search phrase. You can also specify a CiteULike article id (123456),. a DOI (doi:10.1234/12345678). or a PubMed ID (pmid:12345678). Click Help for advanced usage. CiteULike, Group: CMU-HCII, Search, Register, Log in, ...
Dealing with uncertainty in Bayesian Network structures using maximum a posteriori (MAP) estimati... more Dealing with uncertainty in Bayesian Network structures using maximum a posteriori (MAP) estimation or Bayesian Model Averaging (BMA) is often intractable due to the superexponential number of possible directed, acyclic graphs. When the prior is decomposable, two classes of graphs where efficient learning can take place are treestructures, and fixed-orderings with limited in-degree. We show how MAP estimates and BMA for selectively conditioned forests (SCF), a combination of these two classes, can be computed efficiently for ordered sets of variables. We apply SCFs to temporal data to learn Dynamic Bayesian Networks having an intra-timestep forest and inter-timestep limited in-degree structure, improving model accuracy over DBNs without the combination of structures. We also apply SCFs to Bayes Net classification to learn selective forestaugmented NaĂŻve Bayes classifiers. We argue that the built-in feature selection of selective augmented Bayes classifiers makes them preferable to similar non-selective classifiers based on empirical evidence.
Applications are often designed to take advantage of the potential for integration with each othe... more Applications are often designed to take advantage of the potential for integration with each other via shared information. Current approaches for integration are limited, affecting both the programmer and end-user. In this paper, we present CyberDesk, a framework for self-integrating software in which integration is driven by user context. It relieves the burden on programmers by removing the necessity to predict how software should be integrated. It also relieves the burden from users by removing the need to understand how to make different software components work together. á§
As we enable everyday environments with ubiquitous technology, there are many opportunities to su... more As we enable everyday environments with ubiquitous technology, there are many opportunities to support simple activities in useful ways. We are investigating how an environment made aware of the location and activities of its occupants can better support direct human-human communication. Specifically, we have instrumented a home to explore lightweight, spontaneous hands-free communication between residents in different parts of the home. Our working prototype demonstrates how existing technologies of voice recognition, indoor positioning and audio routing lay the foundation for the exploration of a variety of more intelligent alternatives to the traditional home intercom system. We show how context can be used to mediate the initiation and management of one-and two-way audio connections between residents, supporting a range of within-home conversational patterns. In this paper, we describe a variety of home communication scenarios and the general infrastructure we have built to explore them.
Active environments -those with sensing and actuation capabilitiesare often difficult for end use... more Active environments -those with sensing and actuation capabilitiesare often difficult for end users to control. We describe the design and implementation of a system, SiteView, for creating and viewing automation control rules. Sit eView has an intuitive tangible interaction method for creat ing control rules and enhances user understanding of the system by appropriately exposing internal state. SiteView also supports users' visualization of the active environment outside the programming environment through a photographic display keyed to control rule conditions. We demonstrate SiteView's usefulness through example control rules.
Although context-awareness is a key component for perceptual user interfaces, we lack generic inf... more Although context-awareness is a key component for perceptual user interfaces, we lack generic infrastructures for developing context-aware applications. We propose a generic infrastructure based on context servers that store, share and archive contextual data. We describe a few applications we have built that take advantage of context sharing and context history and then turn to the overall design of our context server.
Abstract With a focus on presenting information at the right time, the ubicomp community can bene... more Abstract With a focus on presenting information at the right time, the ubicomp community can benefit greatly from learning the most salient human measures of cognitive load. Cognitive load can be used as a metric to determine when or whether to interrupt a user. In this paper, we collected data from multiple sensors and compared their ability to assess cognitive load. Our focus is on visual perception and cognitive speed-focused tasks that leverage cognitive abilities common in ubicomp applications.
Page 1. Supporting the Construction of Context-Aware Applications Anind K. Dey Intel Berkeley Lab... more Page 1. Supporting the Construction of Context-Aware Applications Anind K. Dey Intel Berkeley Lab Intel Research Page 2. 9/17/2001 3 How UbiComp is Different from Traditional GUI • Not only direct interaction for input and output • Need to use RANGE of explicit AND implicit interaction • Different computing paradigm Page 3.
The typical user is no longer facing a desktop machine in the relatively predictable office envir... more The typical user is no longer facing a desktop machine in the relatively predictable office environment. Rather, users have to deal with diverse devices, mobile or fixed, sporting diverse interfaces and used in diverse environments. In appearance, this phenomenon is a step towards the realization of Mark Weiser's ubiquitous computing paradigm, or 'third wave of computing', where specialized devices outnumber users [Weiser 1991].
Abstract Sharing sensitive context information among multiple distributed components in mobile en... more Abstract Sharing sensitive context information among multiple distributed components in mobile environments introduces major security concerns. The distributed sensing, processing and actuating components of these applications can be compromised and modified or impersonated to extract private and confidential information or to inject false information. In this paper we present the Anubis protocol for remote code attestation and access control of distributed components using remote execution of trusted code.
ABSTRACT Since a shopper can't bring a room from their house with them when they shop for a house... more ABSTRACT Since a shopper can't bring a room from their house with them when they shop for a household item, they have to make their choice based on what they imagine the object would look like in a particular room. The result of a tangible interaction research project, the Virtual Wall solves this problem by allowing a shopper to add a proportionally sized image of the item to a picture of the room that they brought with them to the store or is already in their web account.
ABSTRACT Rising power demands resulting from technological advancements is an increasingly import... more ABSTRACT Rising power demands resulting from technological advancements is an increasingly important global issue. One way to tackle this problem is to motivate individual behavior change, for which the ubiquity of mobile phones offer an ideal platform to influence consumption behavior of users.
We use computing devices at work, at home and on the go. We generate huge amount of data that is ... more We use computing devices at work, at home and on the go. We generate huge amount of data that is stored (either temporarily or permanent) on our machines or on remote servers. There is a lot of value in this information and many external parties already further exploit some of it. So, if others consider our information important why don't we take proper advantage of it? How can we use the information we generate to our own advantage? How can we use this information to improve our lives and support our wellbeing? And how can we create better environments that will be able to offer more personalized and engaging interfaces supporting such diversity of information? We offer here our answer to such questions by presenting the MyRoR system with its main goals of better supporting self-understanding and offer more natural interfaces for information visualizations, based on personalized and interactive stories.
Abstract People consider other people who resemble them to be more persuasive. Users may consider... more Abstract People consider other people who resemble them to be more persuasive. Users may consider embodied conversational agents, or ECAs, to be more persuasive if the agents resemble them. In an experimental study, we found that users rated the persuasiveness of agents that resemble them higher than other agents. However, actual advice-taking diverged from this pattern; when users created the agents, users changed their choices less when interacting with the agents that resembled them.
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