Browsing by Author "Liao, Holmes"
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Item Alpha Slider: Searching Textual Lists with Sliders(1993) Osada, M.; Liao, Holmes; Shneiderman, B.; ISRAlphaSlider is a query interface that uses a direct manipulation slider to select words, phrases, or names from an existing list. This paper introduces a prototype of AlphaSlider, describes the design issues, reports on an experimental evaluation, and offers directions for further research. The experiment tested 24 subjects selecting items from lists of 40, 80, 160, and 320 entries. Mean selection times only doubled with the 8-fold increase in list length. Users quickly accommodated to this selection method.Item AlphaSlider: Searching Textual Lists with Sliders(1998-10-15) Osada, Masakazu; Liao, Holmes; Shneiderman, BenAlphaSlider is a query interface that uses a direct manipulation slider to select words, phrases, or names from an existing list. This paper introduces a prototype of AlphaSlider, describes the design issues, reports on an experimental evaluation, and offers directions for further research. The experiment tested 24 subjects selecting items from lists of 40, 80, 160, and 320 entries. Mean selection times only doubled with the 8-fold increase in list length. Users quickly accommodated to this selection method. (Also cross-referenced as CAR-TR-637) (Also cross-referenced as ISR-TR-93-52)Item Browsing Unix Directories With Dynamic Queries: An Evaluation of Three Information Display Techniques(1998-10-15) Liao, Holmes; Osada, Masakazu; Shneiderman, BenWe designed, implemented, and evaluated an innovative concept for dynamic queries which involves the direct manipulation of small databases. Our domain was directories in a Unix file system. Dynamic queries allow users to formulate queries and explore the databases with graphical widgets, such as sliders and buttons, without requiring them to have any knowledge about the underlying structure of the database query languages, or command language syntax. Three interfaces for presenting directories were developed and tested with eighteen subjects in a within-subject design. The results of the formative evaluation yielded some useful guidelines for software designers. (Also cross-referenced as CAR-TR-605)