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Jim Gemmell

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Publications by Jim Gemmell (bibliography)

» 2006 «

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Czerwinski, Mary, Gage, Douglas W., Gemmell, Jim, Marshall, Catherine C., Perez-Quinones, Manuel A., Skeels, Meredith M. and Catarci, Tiziana (2006): Digital memories in an era of ubiquitous computing and abundant storage. In Communications of the ACM, 49 (1) pp. 44-50

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Gemmell, Jim, Bell, Gordon and Lueder, Roger (2006): MyLifeBits: a personal database for everything. In Communications of the ACM, 49 (1) pp. 88-95

» 2004 «

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Bell, Gordon, Gemmell, Jim and Lueder, Roger (2004): Challenges in using lifetime personal information stores. In: Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval 2004. p. 1. Available online

“Within five years, our personal computers with terabyte disk drives will be able to store everything we read, write, hear, and many of the images we see including video. Vannevar Bush outlined such a system in his famous 1945 Memex article [1]. For the last four years we have worked on MyLifeBits www. MyLifeBits.com http://www.MyLifeBits.com, a system to digitally store everything from one's life, including books, articles, personal financial records, memorabilia, email, written correspondence, photos (time, location taken), telephone calls, video, television programs, and web pages visited. We recently added content from personal devices that automatically record photos and audio. The project started with the capture of Bell's content [2], followed by an effort to explore the use of the SQL database for storage and retrieval. Work has continued along these lines to extend content capture from every useful source e.g. a meeting capture system. The second phase of the project includes the design of tools and links for annotation, collections, cluster analysis, facets for characterizing the content, creation of timelines and stories, and other inherent database related capabilities, e.g. the ability to pivot on an event or photo or person to retrieve linked information [3]. Ideally we would like to have a system that would read every document, extract meta-data (e.g. Dublin Core) and classify it using multiple ontologies, faceted classifications, or the relevant. While such a system has implications for future computing devices and their users, these systems will only exist if we can effectively utilize the vast personal stores. Although our system is exploratory, the Stuff I've Seen system [4] demonstrates the utility and necessity of easy search and access to one's own data. Other research efforts with similar goals relating to personal information include Haystack [5], LifeStreams [6], and the UK "Memories for Life" Grand Challenge. There are serious research issues beyond the problem of making the information useful through rapid and easy retrieval. The "Dear Appy" problem ("Dear Appy, My application, or platform, or media left me unreadable. Signed, Lost Data") is unsettling to archivists and computer professionals -- and must be solved. Just navigating the stored life of individual would at first glance appear to take almost a lifetime to sift through. While we are making progress in the capture of less traditionally archived content (e.g. meetings, phone calls & video), automatic interpretation and index of voice are illusive. MyLifeBits is currently focused on retrieval including the hopefully automatic, addition of meta-data e.g. document type identification, high level knowledge. While such data is essential for the archivist, it is unclear how useful such meta-data is to a one's own information; without such higher level knowledge and concepts, the vast amount of raw bits may be completely unusable. The most cited problem of personal archives is the control of the content including personal security, together with joint ownership of content by other individuals and organizations. In many corporations, periodic expunging of documents is the standard. Similarly, the aspects of a person's life not available in public documents is owned by the organization and all documents may have to be tagged in such a way that it can be expunged, if necessary, when an individual is no longer part of the organization. The HPPA law in the US and even more stringent privacy laws in other counties have major implications for personal stores.”

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» 2002 «

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Gemmell, Jim, Bell, Gordon, Lueder, Roger, Drucker, Steven M. and Wong, Curtis (2002): MyLifeBits: fulfilling the Memex vision. In: ACM Multimedia 2002 2002. pp. 235-238. Available online

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Bell, Gordon and Gemmell, Jim (2002): A call for the home media network. In Communications of the ACM, 45 (7) pp. 71-75

» 1997 «

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Gemmell, Jim and Bell, Gordon (1997): Noncollaborative Telepresentations Come of Age. In Communications of the ACM, 40 (4) pp. 79-89

» 1996 «

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Bell, Gordon and Gemmell, Jim (1996): On-ramp Prospects for the Information Superhighway Dream. In Communications of the ACM, 39 (7) pp. 55-61

» 1995 «

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Gemmell, Jim, Vin, Harrick M., Kandlur, Dilip D., Rangan, P. Venkat and Rowe, Lawrence A. (1995): Multimedia Storage Servers: A Tutorial. In IEEE Computer, 28 (5) pp. 40-49

» 1993 «

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Gemmell, Jim (1993): Multimedia Network File Servers: Multi-Channel Delay Sensitive Data Retrieval. In: ACM Multimedia 1993 1993. pp. 243-250.

» 1992 «

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Gemmell, Jim and Christodoulakis, Stavros (1992): Principles of Delay-Sensitive Multimedia Data Storage and Retrieval. In ACM Transactions on Information Systems, 10 (1) pp. 51-90

“This paper establishes some fundamental principles for the retrieval and storage of delay-sensitive multimedia data. Delay-sensitive data include digital audio, animations, and video. Retrieval of these data types from secondary storage has to satisfy certain time constraints in order to be acceptable to the user. The presentation is based on digital audio in order to provide intuition to the reader, although the results are applicable to all delay-sensitive data. A theoretical framework is developed for the real-time requirements of digital audio playback. We show how to describe these requirements in terms of the consumption rate of the audio data and the nature of the data-retrieval rate from secondary storage. Making use of this framework, bounds are derived for buffer space requirements for certain common retrieval scenarios. Storage placement strategies for multichannel synchronized data are then categorized and examined. The results presented in this paper are basic to any playback of delay-sensitive data and should assist the multimedia system designer in estimating hardware requirements and in evaluating possible design choices.”

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Changes to this page (author)

24 Feb 2010: Enabled abstracts to be shown on Jim Gemmell's author page.
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Publication statistics

Publication period:1992-2006
Publication count:10
Number of co-authors:15

Productive colleagues

Jim Gemmell's 3 most productive colleagues in number of publications:

Mary Czerwinski:68
Catherine C. Marshall:50
Tiziana Catarci:27

Collaboration count

Number of publications with 3 favourite co-authors:

Gordon Bell:6
Roger Lueder:3
Catherine C. Marshall:1

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Learn more about Jim Gemmell:
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Conference Calendar

Mar 22

Workshop on Pervasive healthcare in the home : Supporting patient motivation and engagement

Mar 22

UX People

Mar 22

ETRA '10 - Eye Tracking Research & Applications Symp.

Mar 21

“ Software design is the act of determining the user's experience with a piece of software. It has nothing to do with how the code works inside, or how big or small the code is. The designer's task is to specify completely and unambiguously the user's whole experience. ”

-- David Liddle, From Bringing Design to Software, edited by Terry Winograd, 1996 ”

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Jim Gemmell

Publications by Jim Gemmell (bibliography)

» 2006 «

» 2004 «

» 2002 «

» 1997 «

» 1996 «

» 1995 «

» 1993 «

» 1992 «

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Eva Hornecker on Tangible Interaction

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