@techreport{Zellhoefer, author = {Zellh{\"o}fer, David}, title = {On the Usability of PythiaSearch}, publisher = {BTU}, address = {Cottbus}, language = {en} } @techreport{Zellhoefer, author = {Zellh{\"o}fer, David}, title = {An Evaluation of the Principle of Polyrepresentation in Multimodal and Content-based Image Retrieval}, publisher = {BTU}, address = {Cottbus}, language = {en} } @techreport{Zellhoefer, author = {Zellh{\"o}fer, David}, title = {An Extensible Personal Photograph Collection for Graded Relevance Assessments and USER Simulation}, publisher = {BTU}, address = {Cottbus}, pages = {9 Bl.}, language = {en} }