Object-based Linear Undo model

Zhou, Chunbo; Imamiya, Atsumi

doi:10.1007/978-0-387-35175-9_43

Cited by 5 publications

(8 citation statements)

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“…In general, undo models can be split into two groups: models that only allow actions to be undone sequentially, namely linear undo models, and undo models which can undo arbitrary actions from the past, namely non-linear undo models. Non-linear undo models can be further divided into models for single-user [2,5,28,29,30] and multi-user applications [3,20,21,22,25,24,26]. While the data structure used to store "undoable" actions is different for many undo models, most models facilitate a so-called history list, which holds a linear, chronologically sorted list of all undoable actions.…”

Section: Related Workmentioning

confidence: 99%

Regional undo/redo techniques for large interactive surfaces

Seifried¹,

Rendl²,

Haller³

et al. 2012

Proceedings of the SIGCHI Conference on Human Factors in Computing Systems

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When multiple users are simultaneously sharing a workspace, it is not always clear what should happen when a user invokes an undo action. In this paper we explore different user interfaces for undo/redo for co-located collaborative workspaces, such as large interactive whiteboards. A preliminary study revealed that users expect neither a global nor personal undo, but rather a regional undo. We propose and evaluate three automatic regional undo/redo techniques (clustering, workspace, field of view) designed for a large interactive whiteboard. The results of the evaluation showed that an undo technique based on users' field of view was most preferred, while the content-based clustering technique produced most errors. We conclude with potential improvements to the developed techniques, and propose a set of design recommendations for implementing regional undo/redo on large interactive surfaces.

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Section: Related Workmentioning

confidence: 99%

Regional undo/redo techniques for large interactive surfaces

Seifried¹,

Rendl²,

Haller³

et al. 2012

Proceedings of the SIGCHI Conference on Human Factors in Computing Systems

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“…This is grouping of commands. The browser can be considered as an implementation of the object-based Undo model which has been proposed by the authors [3][4][5]. Figure 8(d) is an example of the grouping of commands related to the "roof" object.…”

Section: Grouping Of Commandsmentioning

confidence: 99%

“…3 is constructed. In this history list, it is very difficult to see what manipulation is represented by each item and to find the operation to which the user intends to apply Undo [4,5,13].…”

Section: Related Studiesmentioning

confidence: 99%

“…However, there does not exist a graphical interface including a selective Undo tool that can fully utilize such a function. The authors have proposed an object-based Undo model with a selective Undo function for manipulation of selected objects [3][4][5]. By using this model, doubly selective Undo can be realized for figure objects and commands.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5], that is, a graphical history browser in which the user can use selective Undo easily to reuse an object composed in the session (called a figure object unless otherwise indicated) and its manipulation. The browser is designed, implemented, and evaluated.…”

Section: Introductionmentioning

confidence: 99%

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Design of a graphical history browser with Undo facility, and visual search analysis

Masuda

Imamiya

2004

Systems & Computers in Japan

Self Cite

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SUMMARYExisting interactive systems provide the user with various tools to make the system recover from an error. Most direct-manipulation graphical interfaces, for example, include an Undo/Redo tool, by which the user can cancel an erroneous action. However, they are only simple mechanisms or provide only a command history represented by a text list, from which it is difficult to find the command or state desired by the user. The purpose of this paper is to realize an interface which helps the user to utilize Undo selectively and easily, to discuss the design and implementation of a graphical history browser, and to describe a visual search experiment and analysis utilizing the history browser. The history browser includes the following functions. (1) Operation commands for each figure object are grouped. (2) The graphical history composed of snapshots of the operation screen is provided as a flip comic. In order to examine the effectiveness of command grouping, an experimental comparison is made with the conventional techniques without grouping. As a result, the effectiveness of command grouping for the experimental task is shown from the viewpoints of task execution time and subjective evaluation by the subject. In addition, in order to investigate the features of the history browser and the behavior of the user in history search, a task experiment is performed in which two methods of history display-display of the history browser and parallel displays of two figures-are used to search visually for the difference between the two figures. The task execution time, the error, and the eyemovement data of the subject are analyzed, and it is shown that by utilizing the flip function of the history browser, the user can find differences quickly and exactly from the specified stimulus display.

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