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- research-articleNovember 2009
A distributed, service-based framework for knowledge applications with multimedia
ACM Transactions on Information Systems (TOIS), Volume 27, Issue 4Article No.: 22, Pages 1–29https://doi.org/10.1145/1629096.1629100The current trend in distributed systems is towards service-based integration. This article describes an ontology-driven framework implemented to provide knowledge management for data of different modalities, with multimedia processing, annotation, and ...
- research-articleOctober 2008
Organizing and managing personal electronic files: A mechanical engineer's perspective
ACM Transactions on Information Systems (TOIS), Volume 26, Issue 4Article No.: 23, Pages 1–40https://doi.org/10.1145/1402256.1402262This article deals with the organization and management of the computer files handled by mechanical engineers on their personal computers. In engineering organizations, a wide variety of electronic files (documents) are necessary to support both ...
- research-articleOctober 2008
Improved search engines and navigation preference in personal information management
ACM Transactions on Information Systems (TOIS), Volume 26, Issue 4Article No.: 20, Pages 1–24https://doi.org/10.1145/1402256.1402259Traditionally users access their personal files mainly by using folder navigation. We evaluate whether recent improvements in desktop search have changed this fundamental aspect of Personal Information Management (PIM). We tested this in two studies using ...
- articleJuly 2005
Trustworthy 100-year digital objects: durable encoding for when it's too late to ask
ACM Transactions on Information Systems (TOIS), Volume 23, Issue 3Pages 299–324https://doi.org/10.1145/1080343.1080346How can an author store digital information so that it will be reliably intelligible, even years later when he or she is no longer available to answer questions? Methods that might work are not good enough; what is preserved today should be reliably ...
- articleApril 2005
Ad Hoc, self-supervising peer-to-peer search networks
ACM Transactions on Information Systems (TOIS), Volume 23, Issue 2Pages 169–200https://doi.org/10.1145/1059981.1059983Peer-to-peer search networks are a popular and widely deployed means of searching massively distributed digital information repositories. Unfortunately, as such networks grow, peers may become overloaded processing messages from other peers. This ...
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- articleJuly 2004
Trustworthy 100-year digital objects: Evidence after every witness is dead
ACM Transactions on Information Systems (TOIS), Volume 22, Issue 3Pages 406–436https://doi.org/10.1145/1010614.1010617In ancient times, wax seals impressed with signet rings were affixed to documents as evidence of their authenticity. A digital counterpart is a message authentication code fixed firmly to each important document. If a digital object is sealed together ...
- articleApril 2003
Region proximity in metric spaces and its use for approximate similarity search
ACM Transactions on Information Systems (TOIS), Volume 21, Issue 2Pages 192–227https://doi.org/10.1145/763693.763696Similarity search structures for metric data typically bound object partitions by ball regions. Since regions can overlap, a relevant issue is to estimate the proximity of regions in order to predict the number of objects in the regions' intersection. ...
- articleApril 2002
Peer-to-peer data trading to preserve information
ACM Transactions on Information Systems (TOIS), Volume 20, Issue 2Pages 133–170https://doi.org/10.1145/506309.506310Data archiving systems rely on replication to preserve information. This paper discusses how a network of autonomous archiving sites can trade data to achieve the most reliable replication. A series of binary trades among sites produces a peer-to-peer ...
- articleApril 2000
Extending document management systems with user-specific active properties
- Paul Dourish,
- W. Keith Edwards,
- Anthony LaMarca,
- John Lamping,
- Karin Petersen,
- Michael Salisbury,
- Douglas B. Terry,
- James Thornton
ACM Transactions on Information Systems (TOIS), Volume 18, Issue 2Pages 140–170https://doi.org/10.1145/348751.348758Document properties are a compelling infrastructure on which to develop document management applications. A property-based approach avoids many of the problems of traditional heierarchical storage mechanisms, reflects document organizations meaningful ...
- articleJanuary 2000
Evaluating the performance of distributed architectures for information retrieval using a variety of workloads
ACM Transactions on Information Systems (TOIS), Volume 18, Issue 1Pages 1–43https://doi.org/10.1145/333135.333136The information explosion across the Internet and elswhere offers access to an increasing number of document collections. In order for users to effectively access these collections, information retrieval (IR) systems must provide coordinated, concurrent,...
- articleOctober 1999
Efficient passage ranking for document databases
ACM Transactions on Information Systems (TOIS), Volume 17, Issue 4Pages 406–439https://doi.org/10.1145/326440.326445Queries to text collections are resolved by ranking the documents in the collection and returning the highest-scoring documents to the user. An alternative retrieval method is to rank passages, that is, short fragments of documents, a strategy that can ...
- articleJuly 1998
Augmenting organizational memory: a field study of answer garden
ACM Transactions on Information Systems (TOIS), Volume 16, Issue 3Pages 203–224https://doi.org/10.1145/290159.290160A growing concern for organizations and groups has been to augment their knowledge and expertise. One such augmentation is to provide an organizational memory, some record of the organization's knowledge. However, relatively little is known about how ...
- articleJanuary 1998
Hyperdocuments as automata: verification of trace-based browsing properties by model checking
ACM Transactions on Information Systems (TOIS), Volume 16, Issue 1Pages 1–30https://doi.org/10.1145/267954.267955We present a view of hyperdocuments in which each document encodes its own browsing semantics in its links. This requires a mental shift in how a hyperdocument is thought of abstractly. Instead of treating the links of a document as defining a static ...
- articleApril 1997
Access control for large collections
ACM Transactions on Information Systems (TOIS), Volume 15, Issue 2Pages 154–194https://doi.org/10.1145/248625.248652Efforts to place vast information resources at the fingertips of each individual in large user populations must be balanced by commensurate attention to information protection. For distributed systems with less-structured tasks, more-diversified ...
- articleOctober 1995
XMovie: architecture and implementation of a distributed movie system
ACM Transactions on Information Systems (TOIS), Volume 13, Issue 4Pages 471–499https://doi.org/10.1145/211430.211440We describe a system for storing, transmitting, and presenting digital movies in a computer network. The hardware used in the system is standard hardware, as found in typical workstations today; no special hardware is required, but if available it can ...
- articleJuly 1995
A network approach to probabilistic information retrieval
ACM Transactions on Information Systems (TOIS), Volume 13, Issue 3Pages 324–353https://doi.org/10.1145/203052.203067In this article we show how probabilistic information retrieval based on document components may be implemented as a feedforward (feedbackward) artificial neural network. The network supports adaptation of connection weights as well as the growing of ...
- articleApril 1993
Estimating accesses in partitioned signature file organizations
ACM Transactions on Information Systems (TOIS), Volume 11, Issue 2Pages 133–142https://doi.org/10.1145/130226.145014We show that performance of some basic methods for the partitioning of signature files, namely Quick Filter and Fixed Prefix, can be easily evaluated by means of a closed formula. The approximation is based on well-known results from probability theory, ...
- articleOctober 1992
A model for input and output of multilingual text in a windowing environment
ACM Transactions on Information Systems (TOIS), Volume 10, Issue 4Pages 438–451https://doi.org/10.1145/146486.146558The layered multilingual input/output(I/O) sytems we designed, based on typological studies of major-language writing conventions, unifies common features of such conventions to enable international and local utilization. The internationalization layer ...
- articleOctober 1992
A high-level and flexible framework for implementing multiuser user interfaces
ACM Transactions on Information Systems (TOIS), Volume 10, Issue 4Pages 345–380https://doi.org/10.1145/146486.146495We have developed a high-level and flexible framework for supporting the construction of multiuser interfaces. The framework is based on a generalized editing interaction model, which allows users to view programs as active data that can be concurrently ...
- articleJuly 1992
The envoy framework: an open architecture for agents
- Murugappan Palaniappan,
- Nicole Yankelovich,
- George Fitzmaurice,
- Anne Loomis,
- Bernard Haan,
- James Coombs,
- Norman Meyrowitz
ACM Transactions on Information Systems (TOIS), Volume 10, Issue 3Pages 233–264https://doi.org/10.1145/146760.146770The Envoy Framework addresses a need for computer-based assistants or agents that operate in conjunction with users' existing applications, helping them perform tedious, repetitive, or time-consuming tasks more easily and efficiently. Envoys carry out ...