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20172022
most citedExposing Paid Opinion Manipulation Trolls

43 citations · 89 across the 7 of their papers we have counts for

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Showing cs.CLShow all

5 papers · 1 filter

cs.CL2022

Leaf: Multiple-Choice Question Generation

Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov +3

Testing with quiz questions has proven to be an effective way to assess and improve the educational process. However, manually creating quizzes is tedious and time-consuming. To ad…

cs.CL2021★ 22 cited

Feature-Rich Named Entity Recognition for Bulgarian Using Conditional Random Fields

Georgi Georgiev, Preslav Nakov, Kuzman Ganchev +2

The paper presents a feature-rich approach to the automatic recognition and categorization of named entities (persons, organizations, locations, and miscellaneous) in news text for…

cs.CL2021

Generating Answer Candidates for Quizzes and Answer-Aware Question Generators

Kristiyan Vachev, Momchil Hardalov, Georgi Karadzhov +3

In education, open-ended quiz questions have become an important tool for assessing the knowledge of students. Yet, manually preparing such questions is a tedious task, and thus au…

cs.CL2019★ 24 cited

Feature-Rich Part-of-speech Tagging for Morphologically Complex Languages: Application to Bulgarian

Georgi Georgiev, Valentin Zhikov, Petya Osenova +2

We present experiments with part-of-speech tagging for Bulgarian, a Slavic language with rich inflectional and derivational morphology. Unlike most previous work, which has used a…

cs.CL2017

The Case for Being Average: A Mediocrity Approach to Style Masking and Author Obfuscation

Georgi Karadjov, Tsvetomila Mihaylova, Yasen Kiprov +3

Users posting online expect to remain anonymous unless they have logged in, which is often needed for them to be able to discuss freely on various topics. Preserving the anonymity…