CH2-NLG application of the system] [question and answer dialogue

Task Description : Given the occurrence of background dialogue, then dialogue in reply to questions, the reply is generated type (such as asking, reference is two words, "He looks like a stick hand" Joe is a boy or a girl? " , so she stayed put him "and" her partner for this new noodle named Joe ", so the answer is" boy "). Each one has a question and answer session. So this is both a question and answer task, but also a reading comprehension task, it is a dialogue task.

Here mainly to a Reddy et al published in 2018 paper , for example, to introduce relevant ideas and methods of conversational questions and answers.

Direct look at an example of the text more intuitive understanding of what the task Yes.

  Dialogue with the problem $Q_{1}$Start, we not only give the answer $A_{1}$Also gives the answer to the background of reasons $R_{1}$In this example, the answer is given only Governor , but you can see this is from The Virginia governor's race. This long sentence get.

  We look at the second question $Q_{2}$( The Where? ), We have to answer this question depending on the context and history of conversation, that you want to answer $Q_{n}$Need to rely $Q_{1},A_{1},...,Q_{n-1},A_{n-1}$. So we considered $Q_{1},A_{1}$And reference $R_{2}$ To give an answer $A_{2}$. If you can not answer questions arise, we will give an unknown answer, then you will not give a reference.

  We can see from this example, (different colors shown in the figure) with the dialogue, also in the center of conversation changes. in $Q_{4}$Using his to refer to Terry , in $Q_{5}$, Then with he to refer to Ken .

Of course, some problems to read the entire background, with reference to a number of an answer sentence (as in FIG. $Q_{1},Q_{4},Q_{5}$), How to deal with this situation?

150 of the extracted question and divided into several categories, as shown below:

• Vocabulary matching (lexical match) : there was a problem contains at least one word of dialogue in the background
• Interpretation (Paraphrasing) : a question does not meet the "vocabulary matching" conditions, but is part of reference. Such problems usually contains synonyms, antonyms, synonyms super, the next words and negative words, the proportion of the number of very large.
• Pragmatics (Pragmatics) : issue two conditions are not met, then go to the "pragmatic", indicating that the study of language and the context in relationships. These issues are often common sense reasoning or some assumptions can give the answer. Such as the face, "he is not noisy and trouble?" Questions and "when he walked like a cat elegant soft" frame of reference, you can answer this question.

StanfordNLP already open source related data sets and code, address link .