Figure 1 — The Quill Interface Figure 2 — The Quill System Architecture The different candidate files are shown to the user in a dialogue box that shows up when a document finishes printing (Figure 4). There, the users have the option not to associate an RFID tag to their document. If they ac- cept, the information about the document in the knowl- edge base is updated with the respective RFID key. The bridge between both representations is thus created and both virtual and real copies are enriched with extra- information. Figure 5 — Multiple Tagged Documents This relationship between the knowledge base representa- tion of our virtual documents and their physical replicas enables us to retrieve documents in different ways. Con- sidering the narrative document retrieval system, Quill, it is now possible to expand the narratives to the real docu- ments context, information that is frequently mentioned by users. Thus, any user can mention in his story the printing occurrence, the real placement of a replica (“and there is a real copy of the document in that shelve”) or, with the real document in his hands, retrieve the virtual copy (“it’s this document”). Besides, when a document is retrieved, and we don’t know the physical copy’s where- abouts, we can ask Quill. Figure 6 — % of files by filename repetition Figure 7 — % of names by filename repetition
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