  Requirements elicitation can be very challenging in projects that require
deep domain knowledge about the system at hand. As analysts have the full
control over the elicitation process, their lack of knowledge about the system
under study inhibits them from asking related questions and reduces the
accuracy of requirements provided by stakeholders. We present ELICA, a generic
interactive visual analytics tool to assist analysts during requirements
elicitation process. ELICA uses a novel information extraction algorithm based
on a combination of Weighted Finite State Transducers (WFSTs) (generative
model) and SVMs (discriminative model). ELICA presents the extracted relevant
information in an interactive GUI (including zooming, panning, and pinching)
that allows analysts to explore which parts of the ongoing conversation (or
specification document) match with the extracted information. In this
demonstration, we show that ELICA is usable and effective in practice, and is
able to extract the related information in real-time. We also demonstrate how
carefully designed features in ELICA facilitate the interactive and dynamic
process of information extraction.
