Context-Aware Tuples for the Ambient

Scholliers, Christophe; Boix, Elisa Gonzalez; Meuter, Wolfgang De; D'Hondt, Theo

doi:10.1007/978-3-642-16949-6_6

Cited by 9 publications

(8 citation statements)

References 17 publications

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“…Currently, no tuple space supports all of these features. We have added some of the missing features below to an existing tuple space called TOTAM [12].…”

Section: Urban-area Tuple Spacementioning

confidence: 99%

Programming urban-area applications

Harnie

D'Hondt

Boix

et al. 2012

Proceedings of the 27th Annual ACM Symposium on Applied Computing

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The evolution of smartphones has given rise to urban-area applications: applications that communicate in a city by means of the public (moving) infrastructure, e.g. buses and trams. In this setting, applications need to communicate and discover each other using intermediaries that move around the city and transfer data between them. This requires programmers to scatter code that deals with routing messages to the correct place and dealing with network failures all over their programs. Our approach allows the programmer to specify urban-area applications in a high-level manner without the burden of directly encoding communication using intermediaries. We present this as a translation from a high-level object-oriented programming paradigm to a lowlevel communication mechanism.

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“…Currently, no tuple space supports all of these features. We have added some of the missing features below to an existing tuple space called TOTAM [12].…”

Section: Urban-area Tuple Spacementioning

confidence: 99%

Programming urban-area applications

Harnie

D'Hondt

Boix

et al. 2012

Proceedings of the 27th Annual ACM Symposium on Applied Computing

Self Cite

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“…youtube.com/playlist?list=PL71615F77073CD26C&feature=plcp 6 Flikken means cops in Flemish. 7 http://www.lamosca.be/en/the-target …”

Section: Flikkenmentioning

confidence: 99%

“…Flikken is a significant subset of an augmented reality game inspired by the industrial game "The Target" 7 . The game consists of a dangerous gangster on the loose with the goal of earning 1 million euro by committing crimes.…”

Section: Flikkenmentioning

confidence: 99%

“…In addition, students have used our tuple space based approach for the development of various mobile peer-to-peer applications. These experiences have led us to significantly improve previous iterations of our tuple space model [7] in two fundamental ways. First, we have developed a leasing model which allows the underlying system to reclaim tuples in the face of partial failures.…”

Section: Introductionmentioning

confidence: 99%

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Programming mobile context-aware applications with TOTAM

Boix¹,

Scholliers²,

Meuter³

et al. 2014

Journal of Systems and Software

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In tuple space approaches to context-aware mobile systems, the notion of context is defined by the presence or absence of certain tuples in the tuple space. Existing approaches define such presence either by collocation of devices holding the tuples or by replication of tuples across all devices. We show that both approaches can lead to an erroneous perception of context. Collocation ties the perception of context to network connectivity which does not always yield the expected result. Tuple replication can cause that a certain context is perceived even if the device has left the context a long time ago. We propose a tuple space approach in which tuples themselves carry a predicate that determines whether they are in the right context or not. We present a practical API for our approach and show its use by means of the implementation of various mobile applications. Benchmarks show that our approach can lead to a significant increase in performance compared to other approaches.

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“…These models are database-like in nature. Languages employing such models include tuplespace-based languages such as Linda (Gelernter 1985;Carriero et al 1994), Lime (Murphy, Picco and Roman 2006), and TOTAM (Scholliers, González Boix and De Meuter 2009;Scholliers et al 2010;González Boix 2012;González Boix et al 2014), as well as languages that depend solely on an external DBMS for inter-agent communication, such as PHP (Tatroe, MacIntyre and Lerdorf 2013).…”

Section: Tuplespaces and Databasesmentioning

confidence: 99%

Conversational concurrency

Garnock-Jones¹

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Concurrent computations resemble conversations. In a conversation, participants direct utterances at others and, as the conversation evolves, exploit the known common context to advance the conversation. Similarly, collaborating software components share knowledge with each other in order to make progress as a group towards a common goal.This dissertation studies concurrency from the perspective of cooperative knowledge-sharing, taking the conversational exchange of knowledge as a central concern in the design of concurrent programming languages. In doing so, it makes five contributions:1. It develops the idea of a common dataspace as a medium for knowledge exchange among concurrent components, enabling a new approach to concurrent programming.While dataspaces loosely resemble both "fact spaces" from the world of Linda-style languages and Erlang's collaborative model, they significantly differ in many details.2. It offers the first crisp formulation of cooperative, conversational knowledge-exchange as a mathematical model. 3.It describes two faithful implementations of the model for two quite different languages.4. It proposes a completely novel suite of linguistic constructs for organizing the internal structure of individual actors in a conversational setting.The combination of dataspaces with these constructs is dubbed Syndicate. 5.It presents and analyzes evidence suggesting that the proposed techniques and constructs combine to simplify concurrent programming.The dataspace concept stands alone in its focus on representation and manipulation of conversational frames and conversational state and in its integral use of explicit epistemic knowledge. The design is particularly suited to integration of general-purpose I/O with otherwisefunctional languages, but also applies to actor-like settings more generally. AcknowledgmentsNetworking is interprocess communication.-Robert Metcalfe, 1972, quoted in Day (2008) I am deeply grateful to the many, many people who have supported, taught, and encouraged me over the past seven years.My heartfelt thanks to my advisor, Matthias Felleisen. Matthias, it has been an absolute privilege to be your student. Without your patience, insight and willingness to let me get the crazy ideas out of my system, this work would not have been possible. My gratitude also to the members of my thesis committee, Mitch Wand, Sam Tobin-Hochstadt, and Jan Vitek. Sam in particular helped me convince Matthias that there might be something worth looking into in this concurrency business. I would also like to thank Olin Shivers for providing early guidance during my studies.Thanks Many thanks to Alex Warth and Yoshiki Ohshima, who invited me to intern at CDG Labs with a wonderful research group during summer and fall 2014, and to John Day, whose book helped motivate me to return to academia. Thanks also to the DARPA CRASH program and to several NSF grants that helped to fund my PhD research.I wouldn't have made it here without crucial interventions over the past few decades from a wide range ...

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Context-Aware Tuples for the Ambient

Cited by 9 publications

References 17 publications

Programming urban-area applications

Programming urban-area applications

Programming mobile context-aware applications with TOTAM

Conversational concurrency

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