Manual and interactive search runs at the University of Alabama and the University of North Carolina at Chapel Hill

Researchers from the University of Alabama and the University of North Carolina at Chapel Hill collaborated on this study for TRECVID-08. This study focused on the search task of TRECVID-08, and the experiments included two full search runs, one interactive and one manual. Both search runs, M_C_2_ViewFinderALNC_2 and I_C_1_ViewFinderALNC_1, had similar designs. Each was conducted using the ViewFinder video retrieval system and employed the same expert user. The interactive submission, I_C_1_ViewFinderALNC_1, served as the baseline run for this year's search task (required for groups submitting runs involving human participants). As required by TRECVID-08 guidelines, the version of ViewFinder implemented for the baseline run (I_C_1_ViewFinderALNC_1) returned video shots using only the ASR¹/MT² output provided by the conference [5]. The ViewFinder system employed for the manual run, M_C_2_ViewFinderALNC_2, evaluated a QBE³ hybrid⁴ search. Differences across these two search runs, along with comparisons with the results from other participating groups, are reported. Results of this study indicated that significant progress is needed in order to become more competitive with some of the more notable research groups at TRECVID.