Involved in projects

• VACOS
  Vague Text and Fact Conditions for Object Search

Lecturer

• Lecture: Information Mining
  Winter 2021/2022
• Seminar: Contextual IR
  Winter 2021/2022

• Student project: IR meets INLs v. 2.0
  Summer 2021
• Lecture: Information Mining
  Winter 2020/2021
• Student project: Information Nutrition Labels meet IR
  Winter 2020/2021
• Seminar: Contextual IR
  Winter 2020/2021
• Student project: Information Retrieval based on INLs
  Summer 2020
• Lecture: Information Mining
  Winter 2019/2020
• Student project: Information Nutrition Labeling for better IR - v4
  Winter 2019/2020
• Seminar: Recent Trends in IR
  Winter 2019/2020
• Student project: Information Nutrition Labeling for better IR - v3
  Summer 2019
• Student project: Voice Queries in Product Search with Vague Conditions
  Summer 2019
• Student project: Information Nutrition Labeling for better IR - v2
  Winter 2018/2019
• Lecture: Information Mining
  Winter 2018/2019
• Seminar: Vague Conditions in Object Search
  Winter 2018/2019
• Student project: Information Nutrition Labeling for better IR
  Summer 2018
• Lecture: Information Retrieval
  Summer 2018
• Student project: Design and implementation of an intelligent annotation tool -- 2nd Project
  Winter 2017/2088
• Student project: Design and implementation of an intelligent annotation tool
  Summer 2017
• Seminar: Mining arguments from well-formed and user generated content in Social Media
  Summer 2017
• Seminar: User-Generated Content in Social Media Vol.2
  Winter 2016

Tutor

• Lecture: Information Retrieval
  Summer 2021
• Lecture: Internet-Suchmaschinen
  Summer 2021
• Lecture: Information Retrieval
  Summer 2020
• Lecture: Internet-Suchmaschinen
  Summer 2020
• Lecture: Information Retrieval
  Summer 2019
• Lecture: Internet-Suchmaschinen
  Summer 2019
• Lecture: Information Engineering
  Winter 2018/2019
• Lecture: Information Mining
  Winter 2017/2088
• Lecture: Information Retrieval
  Summer 2017
• Lecture: Internet-Suchmaschinen
  Summer 2017
• Lecture: Information Mining
  Winter 2016

Publications

• Jorge Carrillo-de-Albornoz; Ahmet Aker; Emina Kurtic; Laura Plaza (2019).
  Beyond opinion classification: Extracting facts, opinions and experiences from health forums. PloS one 14(1)
• Inguna Skadina; Robert J. Gaizauskas; Bogdan Babych; Nikola Ljubesic; Dan Tufis; Andrejs Vasiljevs (eds.) (2019).
  Using Comparable Corpora for Under-Resourced Areas of Machine Translation. , Springer
• Ahmet Aker; Alexandru Ceausu; Yang Feng; Robert J. Gaizauskas; Sabine Hunsicker; Radu Ion; Elena Irimia; Dan Stefanescu; Dan Tufis (2019).
  Mapping and Aligning Units from Comparable Corpora. In Using Comparable Corpora for Under-Resourced Areas of Machine Translation,
• Bogdan Babych; Fangzhong Su; Anthony Hartley; Ahmet Aker; Monica Lestari Paramita; Paul D. Clough; Robert J. Gaizauskas (2019).
  Cross-Language Comparability and Its Applications for MT. In Using Comparable Corpora for Under-Resourced Areas of Machine Translation,
• Judith Meinert; Ahmet Aker; Nicole Krämer (2019).
  The Impact of Twitter Features on Credibility Ratings-An Explorative Examination Combining Psychological Measurements and Feature Based Selection Methods. In: Proceedings of the 52nd Hawaii International Conference on System Sciences
• Meinert, Judith; Mirbabaie, Milad; Dungs, Sebastian; Aker, Ahmet (2018).
  Is It Really Fake? -- Towards an Understanding of Fake News in Social Media Communication. In: Meiselwitz, Gabriele (ed.): Social Computing and Social Media. User Experience and Behavior. Springer International Publishing, Cham.
• Aker, Ahmet; Fuhr, Norbert (2018).
  The Information Retrieval Group at the University of Duisburg-Essen. Datenbank-Spektrum
• Sebastian Dungs; Ahmet Aker; Norbert Fuhr; Kalina Bontcheva (2018).
  Can Rumour Stance Alone Predict Veracity?. In: Proceedings of the 27th International Conference on Computational Linguistics, Association for Computational Linguistics
• Jan Kowollik; Ahmet Aker (2018).
  Uni-DUE Student Team: Tackling fact checking through decomposable attention neural network. In: Proceedings of the First Workshop on Fact Extraction and VERification (FEVER)
• Elena Lloret; Laura Plaza; Ahmet Aker (2018).
  The challenging task of summary evaluation: an overview. Language Resources and Evaluation 52(1)

• Razan Masood; Ahmet Aker (2018).
  The Fake News Challenge: Stance Detection using Traditional Machine Learning Approaches. In: Proceedings of the 10th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management - Volume 3: KMIS, INSTICC, SciTePress
• Michael Rist; Ahmet Aker; Norbert Fuhr (2018).
  Towards Making Sense of Online Reviews Based on Statement Extraction. In: Proc. 7th International Conference on Natural Language Processing (NLP 2018)
• Firas Sabbah; Ahmet Aker (2018).
  Creating Comparable Corpora through Topic Mappings. In: Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018), European Language Resources Association (ELRA)
• Alfred Sliwa; Yuan Man; Ruishen Liu; Niravkumar Borad; Seyedeh Ziyaei; Mina Ghobadi; Firas Sabbah; Ahmet Aker (2018).
  Multi-lingual Argumentative Corpora in English, Turkish, Greek, Albanian, Croatian, Serbian, Macedonian, Bulgarian, Romanian and Arabic. In: Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018). European Language Resources Association (ELRA), Miyazaki, Japan.
• Kevin Vincentius; Piyush Aggarwal; Ali Sahan; Birte Högden; N Madan; Anusha Bangaru; Claudia Schwenger; Farid Muradov; Ahmet Aker (2018).
  Information Nutrition Labels : A Plugin for Online News Evaluation. In: Proceedings of the First Workshop on Fact Extractionand VERification (FEVER)
• Arkaitz Zubiaga; Ahmet Aker; Kalina Bontcheva; Maria Liakata; Rob Procter (2018).
  Detection and resolution of rumours in social media: A survey. ACM Computing Surveys (CSUR) 51(2)
• Aker, Ahmet; Petrak, Johann; Sabbah, Firas (2017).
  An Extensible Multilingual Open Source Lemmatizer. In: Proceedings of the International Conference Recent Advances in Natural Language Processing, RANLP 2017
• Ahmet Aker; Emina Kurtic; A. R. Balamurali; Monica Lestari Paramita; Emma Barker; Mark Hepple; Robert J. Gaizauskas (2016).
  A Graph-Based Approach to Topic Clustering for Online Comments to News. In: Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings9626 of Lecture Notes in Computer Science, Springer
• Ahmet Aker; Monica Lestari Paramita; Emina Kurtic; Adam Funk; Emma Barker; Mark Hepple; Robert J. Gaizauskas (2016).
  Automatic label generation for news comment clusters. In: INLG 2016 - Proceedings of the Ninth International Natural Language Generation Conference, September 5-8, 2016, Edinburgh, UK, The Association for Computer Linguistics
• Murad Abouammoh; Kashif Shah; Ahmet Aker (2016).
  Creation of comparable corpora for English-Urdu, Arabic, Persian. In: Proceedings of the Tenth International Conference on Language Resources and Evaluation LREC 2016, Portoro\vz, Slovenia, May 23-28, 2016., European Language Resources Association (ELRA)
• Emma Barker; Monica Lestari Paramita; Adam Funk; Emina Kurtic; Ahmet Aker; Jonathan Foster; Mark Hepple; Robert J. Gaizauskas (2016).
  What's the Issue Here?: Task-based Evaluation of Reader Comment Summarization Systems. In: Proceedings of the Tenth International Conference on Language Resources and Evaluation LREC 2016, Portoro\vz, Slovenia, May 23-28, 2016., European Language Resources Association (ELRA)
• Ahmet Aker; Fr\'ed\'eric Blain; Andr\'es Duque; Marina Fomicheva; Jurica Seva; Kashif Shah; Daniel Beck (2016).
  USFD at SemEval-2016 Task 1: Putting different State-of-the-Arts into a Box. In: Proceedings of the 10th International Workshop on Semantic Evaluation, SemEval@NAACL-HLT 2016, San Diego, CA, USA, June 16-17, 2016, The Association for Computer Linguistics
• Emma Barker; Monica Lestari Paramita; Ahmet Aker; Emina Kurtic; Mark Hepple; Robert J. Gaizauskas (2016).
  The SENSEI Annotated Corpus: Human Summaries of Reader Comment Conversations in On-line News. In: Proceedings of the SIGDIAL 2016 Conference, The 17th Annual Meeting of the Special Interest Group on Discourse and Dialogue, 13-15 September 2016, Los Angeles, CA, USA, The Association for Computer Linguistics
• Nattapong Sanchan; Kalina Bontcheva; Ahmet Aker (2016).
  Understanding Human Preferences for Summary Designs in Online Debates Domain. Polibits 54
• Ahmet Aker; Emina Kurtic; Mark Hepple; Robert J. Gaizauskas; Giuseppe Di Fabbrizio (2015).
  Comment-to-Article Linking in the Online News Domain. In: Proceedings of the SIGDIAL 2015 Conference, The 16th Annual Meeting of the Special Interest Group on Discourse and Dialogue, 2-4 September 2015, Prague, Czech Republic, The Association for Computer Linguistics
• Ahmet Aker; Robert J. Gaizauskas (2015).
  Generating descriptive multi-document summaries of geo-located entities using entity type models. JASIST 66(4)
• Ahmet Aker; Monica Lestari Paramita; Emma Barker; Robert J. Gaizauskas (2014).
  Bootstrapping Term Extractors for Multiple Languages. In: Proceedings of the Ninth International Conference on Language Resources and Evaluation, LREC 2014, Reykjavik, Iceland, May 26-31, 2014., European Language Resources Association (ELRA)
• Ahmet Aker; Monica Lestari Paramita; Marcis Pinnis; Robert J. Gaizauskas (2014).
  Bilingual dictionaries for all EU languages. In: Proceedings of the Ninth International Conference on Language Resources and Evaluation, LREC 2014, Reykjavik, Iceland, May 26-31, 2014., European Language Resources Association (ELRA)
• Ahmet Aker (2014).
  Entity type modeling for multi-document summarization : generating descriptive summaries of geo-located entities. PhD thesis
• Ahmet Aker; Monica Lestari Paramita; Robert J. Gaizauskas (2013).
  Extracting bilingual terminologies from comparable corpora. In: Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics, ACL 2013, 4-9 August 2013, Sofia, Bulgaria, Volume 1: Long Papers, The Association for Computer Linguistics
• Giuseppe Di Fabbrizio; Ahmet Aker; Robert J. Gaizauskas (2013).
  Summarizing Online Reviews Using Aspect Rating Distributions and Language Modeling. IEEE Intelligent Systems 28(3)
• Ahmet Aker; Laura Plaza; Elena Lloret; Robert J. Gaizauskas (2013).
  Do humans have conceptual models about geographic objects? A user study. JASIST 64(4)
• Elena Lloret; Laura Plaza; Ahmet Aker (2013).
  Analyzing the capabilities of crowdsourcing services for text summarization. Language Resources and Evaluation 47(2)
• Ahmet Aker; Yang Feng; Robert J. Gaizauskas (2012).
  Automatic Bilingual Phrase Extraction from Comparable Corpora. In: COLING 2012, 24th International Conference on Computational Linguistics, Proceedings of the Conference: Posters, 8-15 December 2012, Mumbai, India, Indian Institute of Technology Bombay
• Ahmet Aker; Xin Fan; Mark Sanderson; Robert J. Gaizauskas (2012).
  Investigating Summarization Techniques for Geo-Tagged Image Indexing. In: Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings7224 of Lecture Notes in Computer Science, Springer
• Ahmet Aker; Mahmoud El-Haj; M-Dyaa Albakour; Udo Kruschwitz (2012).
  Assessing Crowdsourcing Quality through Objective Tasks. In: Proceedings of the Eighth International Conference on Language Resources and Evaluation, LREC 2012, Istanbul, Turkey, May 23-25, 2012, European Language Resources Association (ELRA)
• Ahmet Aker; Evangelos Kanoulas; Robert J. Gaizauskas (2012).
  A light way to collect comparable corpora from the Web. In: Proceedings of the Eighth International Conference on Language Resources and Evaluation, LREC 2012, Istanbul, Turkey, May 23-25, 2012, European Language Resources Association (ELRA)
• Emina Kurtic; Bill Wells; Guy J. Brown; Timothy Kempton; Ahmet Aker (2012).
  A Corpus of Spontaneous Multi-party Conversation in Bosnian Serbo-Croatian and British English. In: Proceedings of the Eighth International Conference on Language Resources and Evaluation, LREC 2012, Istanbul, Turkey, May 23-25, 2012, European Language Resources Association (ELRA)
• Monica Lestari Paramita; Paul D. Clough; Ahmet Aker; Robert J. Gaizauskas (2012).
  Correlation between Similarity Measures for Inter-Language Linked Wikipedia Articles. In: Proceedings of the Eighth International Conference on Language Resources and Evaluation, LREC 2012, Istanbul, Turkey, May 23-25, 2012, European Language Resources Association (ELRA)
• Inguna Skadina; Ahmet Aker; Nikos Mastropavlos; Fangzhong Su; Dan Tufis; Mateja Verlic; Andrejs Vasiljevs; Bogdan Babych; Paul D. Clough; Robert J. Gaizauskas; Nikos Glaros; Monica Lestari Paramita; Marcis Pinnis (2012).
  Collecting and Using Comparable Corpora for Statistical Machine Translation. In: Proceedings of the Eighth International Conference on Language Resources and Evaluation, LREC 2012, Istanbul, Turkey, May 23-25, 2012, European Language Resources Association (ELRA)
• Ahmet Aker; Trevor Cohn; Robert J. Gaizauskas (2012).
  Redundancy reduction for multi-document summaries using A* search and discriminative training. In: Proceedings of the 2nd International Workshop on Exploiting Large Knowledge Repositories, Castell\'on de la Plana, Spain, September 7, 2012882 of CEUR Workshop Proceedings, CEUR-WS.org
• Ahmet Aker; Robert J. Gaizauskas (2011).
  Understanding the types of information humans associate with geographic objects. In: Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011, ACM
• Giuseppe Di Fabbrizio; Ahmet Aker; Robert J. Gaizauskas (2011).
  STARLET: Multi-document Summarization of Service and Product Reviews with Balanced Rating Distributions. In: Data Mining Workshops (ICDMW), 2011 IEEE 11th International Conference on, Vancouver, BC, Canada, December 11, 2011, IEEE Computer Society
• Elena Lloret; Laura Plaza; Ahmet Aker (2011).
  Multi-Document Summarization by Capturing the Information Users are Interested in. In: Recent Advances in Natural Language Processing, RANLP 2011, 12-14 September, 2011, Hissar, Bulgaria, RANLP 2011 Organising Committee
• Ahmet Aker; Robert J. Gaizauskas (2010).
  Generating Image Descriptions Using Dependency Relational Patterns. In: ACL 2010, Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics, July 11-16, 2010, Uppsala, Sweden, The Association for Computer Linguistics
• Ahmet Aker; Trevor Cohn; Robert J. Gaizauskas (2010).
  Multi-Document Summarization Using A* Search and Discriminative Learning. In: Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing, EMNLP 2010, 9-11 October 2010, MIT Stata Center, Massachusetts, USA, A meeting of SIGDAT, a Special Interest Group of the ACL, ACL
• Inguna Skadina; Ahmet Aker; Voula Giouli; Dan Tufis; Robert J. Gaizauskas; Madara Mierina; Nikos Mastropavlos (2010).
  A Collection of Comparable Corpora for Under-resourced Languages. In: Human Language Technologies - The Baltic Perspective - Proceedings of the Fourth International Conference Baltic HLT 2010, Riga, Latvia, October 7-8, 2010219 of Frontiers in Artificial Intelligence and Applications, IOS Press
• Ahmet Aker; Robert J. Gaizauskas (2010).
  Model Summaries for Location-related Images. In: Proceedings of the International Conference on Language Resources and Evaluation, LREC 2010, 17-23 May 2010, Valletta, Malta, European Language Resources Association
• Xin Fan; Ahmet Aker; Martin Tomko; Philip Smart; Mark Sanderson; Robert J. Gaizauskas (2010).
  Automatic image captioning from the web for GPS photographs. In: Proceedings of the 11th ACM SIGMM International Conference on Multimedia Information Retrieval, MIR 2010, Philadelphia, Pennsylvania, USA, March 29-31, 2010, ACM
• Laura Plaza; Elena Lloret; Ahmet Aker (2010).
  Improving Automatic Image Captioning Using Text Summarization Techniques. In: Text, Speech and Dialogue, 13th International Conference, TSD 2010, Brno, Czech Republic, September 6-10, 2010. Proceedings6231 of Lecture Notes in Computer Science, Springer
• Ahmet Aker; Robert J. Gaizauskas (2009).
  Summary Generation for Toponym-referenced Images using Object Type Language Models. In: Recent Advances in Natural Language Processing, RANLP 2009, 14-16 September, 2009, Borovets, Bulgaria, RANLP 2009 Organising Committee / ACL

Diploma, Master and Bachelor theses

Only in german!

• Attention Detection in Tweets
  Reserved bachelor thesis
• Retrieving True/False Tweets for an Input Tweet
  Reserved bachelor thesis
• Political Bias Detection in Tweets
  Reserved bachelor thesis
• Propaganda Detection in Tweets
  Reserved bachelor thesis
• Sentiment Detection in Tweets
  Reserved bachelor thesis
• Merging external news knowledge with the tweet
  Reserved master thesis
• Detecting Misinformation in Tweets
  Reserved master thesis
• Stance detection in Tweets
  Reserved master thesis
• Three Class Stance detection in Tweets
  Reserved master thesis
• Tweet Analysis UI
  Reserved bachelor thesis
• Tweet Analysis Back End
  Reserved bachelor thesis
• Detecting whether a tweet contains a check worthy claim or not.
  Reserved master thesis
• Analyzing the Impact of Meteorological Factors on the Occurrence of Aneurysmal Subarachnoidal Hemorrhage
  Reserved master thesis
• Retrieving Tweets given judged Claims
  Reserved bachelor thesis
• Understanding INLs.
  Running master thesis
• Explainable Hate Speech Detection in Twitter
  Running master thesis
• Information Nutrition Label driven IR
  Running master thesis
• Investigating similarity metrics for news retrieval
  Running bachelor thesis

• Topic focused Argument Mining
  Finished master thesis
• Argument clustering
  Finished master thesis
• Clustering online reviews
  Finished master thesis
• Labeling review clusters
  Finished master thesis
• Towards multi-lingual argument mining: Comparable passage extraction from comparable corpora.
  Finished master thesis
• Towards multi-lingual argument mining: Creating multi-lingual comparable corpora.
  Finished master thesis
• Towards Fake News Detection
  Finished master thesis
• Fake News Detection Through Information Nutrition Extraction.
  Finished master thesis
• Towards Fake News Detection based on Information Nutrition Labels.
  Finished master thesis
• Fact Verification using Large Textual Sources.
  Finished master thesis
• Determining comments worthy to read.
  Finished master thesis
• Developing an Easy to Use Social Media Analysis Tool
  Finished master thesis
• Is this Tweet Bad or Good News?
  Finished master thesis
• Determining Filter Bubbles in Twitter
  Finished master thesis
• Clustering of Tweets according to Topic
  Finished master thesis
• Annotating Professional Reviews
  Finished bachelor thesis
• Analysing Google News for Bias
  Finished bachelor thesis
• Performing Twitter User Credibility
  Finished master thesis
• Topical Diversity of News Sources
  Finished master thesis