![]() In Study 2, we ad-dressed the possibility that our test instrument may have ac-counted for the nonsignificant relationship between pattern creation and matching. Furthermore, the measurement of task performance using fine-grained (character level) and coarse-grained (substring level) as-sessment techniques was investigated and the relationship between the two techniques explored. In Study 1, the first but not the second hypothesis was supported. As well, we hypothesized a close relationship between the tasks of pattern creation and matching, since both may rely on the same cognitive abilities. We predicted a relationship between ac-curacy and completeness such that they improve in concert, thereby indicating the application of the same cognitive skill set. In this paper, we examine the cognitive skills underly-ing the use of patterns expressed using regular (Chomsky type 3) languages. While further studies are needed, numeric query preview, possibly combined with visual preview, is recommended for future prototypes. Participants were likely able to use and interpret numeric preview information more readily than graphical preview information. Numeric preview allowed faster query construction than visual preview for complex queries, but visual preview may have promoted increased verification of constructed queries. Overall query completion rates were 83%, affirming the usability of this prototype query builder. Usability evaluation was conducted with 12 users each generating 12 queries. Based upon an earlier filter/flow graphical prototype, a visual query builder was developed to enable end users with little pre-existing knowledge to graphically construct complex database queries containing multiple Boolean operators. The overall objective was to provide evidence to make design recommendations for a future software prototype. Numeric query preview was compared to graphical preview for constructing ad-hoc database queries in a usability study. ![]() Our analysis shows that existing tools do not meet children's needs and expectations the outcomes of our work can guide researchers and developers as they implement query formulation strategies for children. a counterpart designed with children in mind and (iii) identify, via participatory design sessions, their preferences when it comes to tools / strategies that can help children find information and guide them through the query formulation process. The primary goals of our research efforts are to: (i) examine existing plug-ins and interfaces that explicitly aid children's query formulation (ii) investigate children's interactions with suggestions offered by a general-purpose query suggestion strategy vs. In this paper, we investigate interaction elements of query formulation-including query suggestion algorithms-for children. ![]() This calls for the examination of existing technologies in this area, to better understand what remains to be done when it comes to facilitating query-formulation tasks for young users. Moreover, even though search tools offer support to help in query formulation, these too are aimed at adults and may hinder children rather than help them. Because children have different developmental needs than adults, these tools may not always adequately support their search for information. Children use popular web search tools, which are generally designed for adult users.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |