[PDF] Top 20 The SJTU System for Dialog State Tracking Challenge 2

... the dialog, in a new domain, ...the dialog state: goals, method, and requested ...the dialog up until that turn; the method is the way the user is trying to interact with the system ... See full document

... and tracking multiple dialog states within proba- bilistic frameworks (Raux and Ma, 2011; Thomson and Young, ...track dialog state in a spoken dialog system (Raux and Ma, ...Go ... See full document

... After tracker outputs are generated based on the sampling results, they are scored using evaluation tools provided by the DSTC organizers. Several metrics are evaluated, including precisions, ROC performance, etc. ... See full document

... Like dialog state tracking, ranking tasks often have features which are constant over all docu- ments – particularly features of the ...ranking challenge task (Chapelle and Chang, 2011), and ... See full document

... word-level dialog state tracking, word-level dialog policy and end-to-end models, resulting in various possible combinations for building a dialog system as shown from the second ... See full document

... Spoken dialog systems, a field rapidly growing with the spread of smart mobile devices, has to deal with challenges to become a primary user in- terface for natural interaction using ...the state of the ... See full document

... of dialog state tracking ap- proaches have utilized statistical machine learn- ing techniques to obtain the distribution over a set of ...first dialog state tracking ... See full document

... It is well-known in machine learning that a sys- tem trained on data from one domain may not per- form as well when deployed in a different domain. Researchers have investigated methods for mitigat- ing this problem, ... See full document

... Dialog state tracking is used to estimate the current belief state of a dialog given all the pre- ceding ...formulate dialog state tracking as a reading ... See full document

... Spoken dialog systems (SDSs) allow users to nat- urally interact with machines through speech and are nowadays an important research direction, es- pecially with the great success of automatic speech recognition ... See full document

... the state of the dialog can be developed and ...actual dialog interaction cannot easily be evaluated (be- cause differing results produced by different track- ers may lead to different choices for ... See full document

... in dialog state ...the Dialog State Tracking Challenge, generalization has been studied through varying levels of mis-match between training and test ... See full document

... out system outperforms most of the other systems except those from Team 6 (and a few others in the schedule 2/all task only), compared to its middle-level performance on ... See full document

... last system action. For ex- ample, if the system asks the user about a specific slot, then it is reasonable to have a larger prob- ability of this slot changing its ... See full document

... for dialog state tracking (Williams, 2012), we also report accuracies while varying the number of N- best ...and dialog policies. The system which yielded dataset A employs implicit and ... See full document

... Spoken Dialog Challenge (Black et ...model, state tracking method and parameters, number of sup- ported routes (8 vs 40, for DS1 and DS2 respec- tively), presence of minor bugs, and user popu- ... See full document

... a dialog, such as users’ goals or ...the state is composed of a predefined set of variables with a predefined domain of expression for each of ...learnt dialog systems, state tracking ... See full document

... The dialog state tracker (DST) is the most cru- cial component for addressing these ...conversation state, based on the previ- ous interaction history, so that the conversational agent may choose the ... See full document

... both state tracking and decision making, most earlier studies adopted generative temporal models, the typical way to formulate belief state updates for POMDP-based systems (Williams and Young, ... See full document

... spoken dialog system, dialog state tracking deduces information about the user’s goal as the dialog progresses, syn- thesizing evidence such as dialog acts over multiple ... See full document