Search Results for author: Dmitry Ilvovsky

Found 30 papers, 2 papers with code

On a Chatbot Navigating a User through a Concept-Based Knowledge Model

no code implementations EcomNLP (COLING) 2020 Boris Galitsky, Dmitry Ilvovsky, Elizaveta Goncharova

Information retrieval chatbots are widely used as assistants, to help users formulate their requirements about the products they want to purchase, and navigate to the set of items that satisfies their requirements in the best way.

Attribute Chatbot +4

Interrupt me Politely: Recommending Products and Services by Joining Human Conversation

no code implementations EcomNLP (COLING) 2020 Boris Galitsky, Dmitry Ilvovsky

We propose a novel way of conversational recommendation, where instead of asking questions to the user to acquire their preferences; the recommender tracks their conversation with other people, including customer support agents (CSA), and joins the conversation only when it is time to introduce a recommendation.

Dialogue Management Management

Correcting Texts Generated by Transformers using Discourse Features and Web Mining

no code implementations RANLP 2021 Alexander Chernyavskiy, Dmitry Ilvovsky, Boris Galitsky

We address both of these flaws: they are independent but can be combined to generate original texts that will be both consistent and truthful.

DSNDM: Deep Siamese Neural Discourse Model with Attention for Text Pairs Categorization and Ranking

no code implementations EMNLP (CODI) 2020 Alexander Chernyavskiy, Dmitry Ilvovsky

To this end, the neural TreeLSTM model is modified to effectively encode discourse trees and DSNDM model based on it is suggested to analyze pairs of texts.

Question Answering

Controlling Chat Bot Multi-Document Navigation with the Extended Discourse Trees

no code implementations CLIB 2020 Dmitry Ilvovsky, Alexander Kirillovich, Boris Galitsky

We define extended discourse trees, introduce means to manipulate with them, and outline scenarios of multi-document navigation to extend the abilities of the interactive information retrieval-based chat bot.

Information Retrieval Retrieval

CrowdChecked: Detecting Previously Fact-Checked Claims in Social Media

1 code implementation10 Oct 2022 Momchil Hardalov, Anton Chernyavskiy, Ivan Koychev, Dmitry Ilvovsky, Preslav Nakov

Thus, an interesting approach has emerged: to perform automatic fact-checking by verifying whether an input claim has been previously fact-checked by professional fact-checkers and to return back an article that explains their decision.

Fact Checking

Batch-Softmax Contrastive Loss for Pairwise Sentence Scoring Tasks

no code implementations NAACL 2022 Anton Chernyavskiy, Dmitry Ilvovsky, Pavel Kalinin, Preslav Nakov

The use of contrastive loss for representation learning has become prominent in computer vision, and it is now getting attention in Natural Language Processing (NLP).

Sentence Sentence Embeddings

Transformers: "The End of History" for NLP?

no code implementations9 Apr 2021 Anton Chernyavskiy, Dmitry Ilvovsky, Preslav Nakov

Recent advances in neural architectures, such as the Transformer, coupled with the emergence of large-scale pre-trained models such as BERT, have revolutionized the field of Natural Language Processing (NLP), pushing the state of the art for a number of NLP tasks.

On a Chatbot Conducting Dialogue-in-Dialogue

no code implementations WS 2019 Boris Galitsky, Dmitry Ilvovsky, Elizaveta Goncharova

We demo a chatbot that delivers content in the form of virtual dialogues automatically produced from plain texts extracted and selected from documents.

Chatbot

Discourse-Based Approach to Involvement of Background Knowledge for Question Answering

no code implementations RANLP 2019 Boris Galitsky, Dmitry Ilvovsky

We introduce a concept of a virtual discourse tree to improve question answering (Q/A) recall for complex, multi-sentence questions.

Question Answering Sentence

On a Chatbot Providing Virtual Dialogues

no code implementations RANLP 2019 Boris Galitsky, Dmitry Ilvovsky, Elizaveta Goncharova

We present a chatbot that delivers content in the form of virtual dialogues automatically produced from the plain texts that are extracted and selected from the documents.

Chatbot

Two Discourse Tree - Based Approaches to Indexing Answers

no code implementations RANLP 2019 Boris Galitsky, Dmitry Ilvovsky

We explore anatomy of answers with respect to which text fragments from an answer are worth matching with a question and which should not be matched.

Anatomy Vocal Bursts Valence Prediction

Creation and Evaluation of Datasets for Distributional Semantics Tasks in the Digital Humanities Domain

no code implementations7 Mar 2019 Gerhard Wohlgenannt, Ariadna Barinova, Dmitry Ilvovsky, Ekaterina Chernyak

Among the contributions are the evaluation of various word embedding techniques on the different task types, with the findings that even embeddings trained on small corpora perform well for example on the word intrusion task.

Word Embeddings Word Similarity

Relation Extraction Datasets in the Digital Humanities Domain and their Evaluation with Word Embeddings

no code implementations4 Mar 2019 Gerhard Wohlgenannt, Ekaterina Chernyak, Dmitry Ilvovsky, Ariadna Barinova, Dmitry Mouromtsev

In this research, we manually create high-quality datasets in the digital humanities domain for the evaluation of language models, specifically word embedding models.

Relation Relation Extraction +1

Building Dialogue Structure from Discourse Tree of a Question

no code implementations WS 2018 Boris Galitsky, Dmitry Ilvovsky

In this section we propose a reasoning-based approach to a dialogue management for a customer support chat bot.

Dialogue Management Management +1

On a Chat Bot Finding Answers with Optimal Rhetoric Representation

no code implementations RANLP 2017 Boris Galitsky, Dmitry Ilvovsky

The system achieves rhetoric agreement by learning pairs of discourse trees (DTs) for question (Q) and answer (A).

Sentence valid

Chatbot with a Discourse Structure-Driven Dialogue Management

no code implementations EACL 2017 Boris Galitsky, Dmitry Ilvovsky

We then combine DTs for the paragraphs of documents to form what we call extended DT, which is a basis for interactive content exploration facilitated by the chat bot.

Chatbot Dialogue Management +2

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