288 research outputs found
Several Trade off Features of Quantum Steering in Distributed Scenario
In the present work, we address the question of how bipartite steering
violation takes place among multi-partite systems (where each sub-system have
Hilbert space dimension restricted to two) based on the maximal violations of
the bipartite steering inequality of the reduced pairwise qubit systems. We
have derived a trade-off relation which is satisfied by those pairwise
bipartite maximal steering violations, which physically can be understood as
providing restrictions on the distribution of steering among subsystems. For a
three-qubit system, it is impossible that all pairs of qubits violate the
steering inequality, and once a pair of qubits violates the steering inequality
maximally, the other two pairs of qubits must both obey the steering
inequality. We also present a complementarity relation between genuine
entanglement present in a tripartite state and maximum bipartite steering
violation by its reduced states.Comment: Close to published versio
Annotation and Classification of French Feedback Communicative Functions
International audienceFeedback utterances are among the most fre- quent in dialogue. Feedback is also a crucial aspect of all linguistic theories that take social interaction involving language into account. However, determining communicative func- tions is a notoriously difficult task both for human interpreters and systems. It involves an interpretative process that integrates vari- ous sources of information. Existing work on communicative function classification comes from either dialogue act tagging where it is generally coarse grained concerning the feed- back phenomena or it is token-based and does not address the variety of forms that feed- back utterances can take. This paper intro- duces an annotation framework, the dataset and the related annotation campaign (involv- ing 7 raters to annotate nearly 6000 utter- ances). We present its evaluation not merely in terms of inter-rater agreement but also in terms of usability of the resulting reference dataset both from a linguistic research per- spective and from a more applicative view- point
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