scholarly journals Memory-Augmented Dialogue Management for Task-Oriented Dialogue Systems

2019 ◽  
Vol 37 (3) ◽  
pp. 1-30 ◽  
Author(s):  
Zheng Zhang ◽  
Minlie Huang ◽  
Zhongzhou Zhao ◽  
Feng Ji ◽  
Haiqing Chen ◽  
...  
Keyword(s):  
Dialogue Systems ◽  
Dialogue Management ◽  
Task Oriented

scholarly journals Conversation Graph: Data Augmentation, Training, and Evaluation for Non-Deterministic Dialogue Management

2021 ◽  
Vol 9 ◽  
pp. 36-52
Author(s):  
Milan Gritta ◽  
Gerasimos Lampouras ◽  
Ignacio Iacobacci
Keyword(s):  
Data Augmentation ◽  
Training Data ◽  
Dialogue Systems ◽  
Success Rates ◽  
Agent Behavior ◽  
Graph Data ◽  
Dialogue Management ◽  
Data Volume ◽  
Task Oriented ◽  
Training Signal

Task-oriented dialogue systems typically rely on large amounts of high-quality training data or require complex handcrafted rules. However, existing datasets are often limited in size con- sidering the complexity of the dialogues. Additionally, conventional training signal in- ference is not suitable for non-deterministic agent behavior, namely, considering multiple actions as valid in identical dialogue states. We propose the Conversation Graph (ConvGraph), a graph-based representation of dialogues that can be exploited for data augmentation, multi- reference training and evaluation of non- deterministic agents. ConvGraph generates novel dialogue paths to augment data volume and diversity. Intrinsic and extrinsic evaluation across three datasets shows that data augmentation and/or multi-reference training with ConvGraph can improve dialogue success rates by up to 6.4%.

scholarly journals TODO: A Core Ontology for Task-Oriented Dialogue Systems in Industry 4.0

2021 ◽  
Author(s):  
Cristina Aceta ◽  
Izaskun Fernández ◽  
Aitor Soroa
Keyword(s):  
Industry 4.0 ◽  
Use Cases ◽  
Dialogue Systems ◽  
Dialogue System ◽  
Industrial Systems ◽  
Dialogue Management ◽  
Core Ontology ◽  
Dialogue Modelling ◽  
The One ◽  
Task Oriented

Nowadays, the demand in industry of dialogue systems to be able to naturally communicate with industrial systems is increasing, as they allow to enhance productivity and security in these scenarios. However, adapting these systems to different use cases is a costly process, due to the complexity of the scenarios and the lack of available data. This work presents the Task-Oriented Dialogue management Ontology (TODO), which aims to provide a core and complete base for semantic-based task-oriented dialogue systems in the context of industrial scenarios in terms of, on the one hand, domain and dialogue modelling and, on the other hand, dialogue management and tracing support. Furthermore, its modular structure, besides grouping specific knowledge in independent components, allows to easily extend each of the modules, attending the necessities of the different use cases. These characteristics allow an easy adaptation of the ontology to different use cases, with a considerable reduction of time and costs. So as to demonstrate the capabilities of the the ontology by integrating it in a task-oriented dialogue system, TODO has been validated in real-world use cases. Finally, an evaluation is also presented, covering different relevant aspects of the ontology.

A MULTILINGUAL APPROACH TO TASK-ORIENTED MAN-MACHINE DIALOGUE BY VOICE

1988 ◽  
Vol 02 (03) ◽  
pp. 573-588
Author(s):  
PHILIPPE MORIN ◽  
JEAN-PAUL HATON ◽  
JEAN-MARIE PIERREL ◽  
GUENTHER RUSKE ◽  
WALTER WEIGEL
Keyword(s):  
Speech Recognition ◽  
Electronic Mail ◽  
Dialogue Systems ◽  
Human Speech ◽  
Artificial Languages ◽  
Man Machine Dialogue ◽  
Machine Communication ◽  
Task Oriented ◽  
Multilingual Approach ◽  
Multimedia Interfaces

In the framework of man-machine communication, oral dialogue has a particular place since human speech presents several advantages when used either alone or in multimedia interfaces. The last decade has witnessed a proliferation of research into speech recognition and understanding, but few systems have been defined with a view to managing and understanding an actual man-machine dialogue. The PARTNER system that we describe in this paper proposes a solution in the case of task oriented dialogue with the use of artificial languages. A description of the essential characteristics of dialogue systems is followed by a presentation of the architecture and the principles of the PARTNER system. Finally, we present the most recent results obtained in the oral management of electronic mail in French and German.

scholarly journals End-to-end optimization of goal-driven and visually grounded dialogue systems

2017 ◽  
Author(s):  
Florian Strub ◽  
Harm de Vries ◽  
Jérémie Mary ◽  
Bilal Piot ◽  
Aaron Courville ◽  
...  
Keyword(s):  
Gradient Algorithm ◽  
Planning Problem ◽  
Dialogue Systems ◽  
Generation Task ◽  
Policy Gradient ◽  
Specific Object ◽  
Complex Picture ◽  
History Of ◽  
End To End ◽  
Task Oriented

End-to-end design of dialogue systems has recently become a popular research topic thanks to powerful tools such as encoder-decoder architectures for sequence-to-sequence learning. Yet, most current approaches cast human-machine dialogue management as a supervised learning problem, aiming at predicting the next utterance of a participant given the full history of the dialogue. This vision may fail to correctly render the planning problem inherent to dialogue as well as its contextual and grounded nature. In this paper, we introduce a Deep Reinforcement Learning method to optimize visually grounded task-oriented dialogues, based on the policy gradient algorithm. This approach is tested on the question generation task from the dataset GuessWhat?! containing 120k dialogues and provides encouraging results at solving both the problem of generating natural dialogues and the task of discovering a specific object in a complex picture.

scholarly journals An Evaluation of Chinese Human-Computer Dialogue Technology

2019 ◽  
Vol 1 (2) ◽  
pp. 187-200
Author(s):  
Zhengyu Zhao ◽  
Weinan Zhang ◽  
Wanxiang Che ◽  
Zhigang Chen ◽  
Yibo Zhang
Keyword(s):  
Artificial Intelligence ◽  
Large Scale ◽  
Data Sets ◽  
Dialogue Systems ◽  
Online Testing ◽  
User Intent ◽  
Existing Problems ◽  
Intelligent Processing ◽  
Task Oriented ◽  
Important Branch

The human-computer dialogue has recently attracted extensive attention from both academia and industry as an important branch in the field of artificial intelligence (AI). However, there are few studies on the evaluation of large-scale Chinese human-computer dialogue systems. In this paper, we introduce the Second Evaluation of Chinese Human-Computer Dialogue Technology, which focuses on the identification of a user's intents and intelligent processing of intent words. The Evaluation consists of user intent classification (Task 1) and online testing of task-oriented dialogues (Task 2), the data sets of which are provided by iFLYTEK Corporation. The evaluation tasks and data sets are introduced in detail, and meanwhile, the evaluation results and the existing problems in the evaluation are discussed.

scholarly journals Affirmative Cue Words in Task-Oriented Dialogue

2012 ◽  
Vol 38 (1) ◽  
pp. 1-39 ◽  
Author(s):  
Agustín Gravano ◽  
Julia Hirschberg ◽  
Štefan Beňuš
Keyword(s):  
Computational Methods ◽  
Predictive Power ◽  
American English ◽  
Contextual Information ◽  
Spoken Language ◽  
Dialogue Systems ◽  
Spoken Dialogue Systems ◽  
Standard American English ◽  
Task Oriented ◽  
Cue Words

We present a series of studies of affirmative cue words—a family of cue words such as “okay” or “alright” that speakers use frequently in conversation. These words pose a challenge for spoken dialogue systems because of their ambiguity: They may be used for agreeing with what the interlocutor has said, indicating continued attention, or for cueing the start of a new topic, among other meanings. We describe differences in the acoustic/prosodic realization of such functions in a corpus of spontaneous, task-oriented dialogues in Standard American English. These results are important both for interpretation and for production in spoken language applications. We also assess the predictive power of computational methods for the automatic disambiguation of these words. We find that contextual information and final intonation figure as the most salient cues to automatic disambiguation.

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