tailieunhanh - Advances in Human Robot Interaction Part 15

Tham khảo tài liệu 'advances in human robot interaction part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | User Intent Communication in Robot-Assisted Shopping for the Blind 339 workload than either typing or speech. Browsing and typing were significantly more mentally demanding than speech. It was surprising that in spite of the low mental demand speech caused significantly more frustration than typing. User comments informally collected after the administration of NASA-TLX revealed speech recognition errors to be the reason behind the frustration. Though the participants expressed the desire for an hybrid interface in absence of one most participants 9 out 10 indicated in their comments that they would prefer just typing. 7. Conclusion This paper discussed user intent communication in robot-assisted shopping for the blind. Three intent communication modalities typing speech and browsing are evaluated in a series of experiments with 5 blind and 5 sighted blindfolded participants on a public online database of 11 147 household products. The mean selection time differed significantly among the three modalities but the lack of interactions indicated that the modality differences did not vary significantly between blind and sighted blindfolded groups nor among individual participants. Though it was seen that speech was the fastest in real life the shopper may prefer to use typing as it helps to be more discrete in a public place like a supermarket. A hybrid interface might be desirable. If the exact intention is not known . when the shopper does not know what she wants to buy an interface with a strong coupling of browsing and searching is an option. Since it is difficult to evaluate how such a hybrid interface would perform in real life evaluating the components independently as was done in this paper gives us insights into how user intent should be communicated in robot-assisted shopping for the blind. 8. Acknowledgements This research has been supported in part through NSF grant IIS-0346880 award. We would like to thank all participants for volunteering their time .