Search Results for author: Heike Adel

Found 34 papers, 5 papers with code

Does External Knowledge Help Explainable Natural Language Inference? Automatic Evaluation vs. Human Ratings

no code implementations16 Sep 2021 Hendrik Schuff, Hsiu-Yu Yang, Heike Adel, Ngoc Thang Vu

For this, we investigate different sources of external knowledge and evaluate the performance of our models on in-domain data as well as on special transfer datasets that are designed to assess fine-grained reasoning capabilities.

Natural Language Inference

Thought Flow Nets: From Single Predictions to Trains of Model Thought

no code implementations26 Jul 2021 Hendrik Schuff, Heike Adel, Ngoc Thang Vu

Concretely, we propose a correction module that is trained to estimate the model's correctness as well as an iterative prediction update based on the prediction's gradient.

Enriched Attention for Robust Relation Extraction

no code implementations22 Apr 2021 Heike Adel, Jannik Strötgen

The performance of relation extraction models has increased considerably with the rise of neural networks.

Relation Extraction

To Share or not to Share: Predicting Sets of Sources for Model Transfer Learning

no code implementations16 Apr 2021 Lukas Lange, Jannik Strötgen, Heike Adel, Dietrich Klakow

For this, we study the effects of model transfer on sequence labeling across various domains and tasks and show that our methods based on model similarity and support vector machines are able to predict promising sources, resulting in performance increases of up to 24 F1 points.

Transfer Learning

Adversarial Learning of Feature-based Meta-Embeddings

no code implementations23 Oct 2020 Lukas Lange, Heike Adel, Jannik Strötgen, Dietrich Klakow

Second, the different embedding types can form clusters in the common embedding space, preventing the computation of a meaningful average of different embeddings and thus, reducing performance.

Sentence Classification

NLNDE at CANTEMIST: Neural Sequence Labeling and Parsing Approaches for Clinical Concept Extraction

no code implementations23 Oct 2020 Lukas Lange, Xiang Dai, Heike Adel, Jannik Strötgen

The recognition and normalization of clinical information, such as tumor morphology mentions, is an important, but complex process consisting of multiple subtasks.

Clinical Concept Extraction

An Analysis of Simple Data Augmentation for Named Entity Recognition

1 code implementation COLING 2020 Xiang Dai, Heike Adel

Simple yet effective data augmentation techniques have been proposed for sentence-level and sentence-pair natural language processing tasks.

Data Augmentation Named Entity Recognition

F1 is Not Enough! Models and Evaluation Towards User-Centered Explainable Question Answering

1 code implementation EMNLP 2020 Hendrik Schuff, Heike Adel, Ngoc Thang Vu

The user study shows that our models increase the ability of the users to judge the correctness of the system and that scores like F1 are not enough to estimate the usefulness of a model in a practical setting with human users.

Model Selection Question Answering

NLNDE: The Neither-Language-Nor-Domain-Experts' Way of Spanish Medical Document De-Identification

no code implementations2 Jul 2020 Lukas Lange, Heike Adel, Jannik Strötgen

Natural language processing has huge potential in the medical domain which recently led to a lot of research in this field.


On the Choice of Auxiliary Languages for Improved Sequence Tagging

no code implementations WS 2020 Lukas Lange, Heike Adel, Jannik Strötgen

Recent work showed that embeddings from related languages can improve the performance of sequence tagging, even for monolingual models.

Part-Of-Speech Tagging

Closing the Gap: Joint De-Identification and Concept Extraction in the Clinical Domain

1 code implementation ACL 2020 Lukas Lange, Heike Adel, Jannik Strötgen

Exploiting natural language processing in the clinical domain requires de-identification, i. e., anonymization of personal information in texts.


Type-aware Convolutional Neural Networks for Slot Filling

no code implementations1 Oct 2019 Heike Adel, Hinrich Schütze

In particular, we explore different ways of integrating the named entity types of the relation arguments into a neural network for relation classification, including a joint training and a structured prediction approach.

Classification Coreference Resolution +4

Adversarial Training for Satire Detection: Controlling for Confounding Variables

no code implementations NAACL 2019 Robert McHardy, Heike Adel, Roman Klinger

We therefore propose a novel model for satire detection with an adversarial component to control for the confounding variable of publication source.

General Classification Knowledge Base Population +1

Neural Semi-Markov Conditional Random Fields for Robust Character-Based Part-of-Speech Tagging

no code implementations NAACL 2019 Apostolos Kemos, Heike Adel, Hinrich Schütze

Character-level models of tokens have been shown to be effective at dealing with within-token noise and out-of-vocabulary words.

Part-Of-Speech Tagging

Impact of Coreference Resolution on Slot Filling

no code implementations26 Oct 2017 Heike Adel, Hinrich Schütze

In this paper, we demonstrate the importance of coreference resolution for natural language processing on the example of the TAC Slot Filling shared task.

Coreference Resolution Slot Filling

Syntactic and Semantic Features For Code-Switching Factored Language Models

no code implementations4 Oct 2017 Heike Adel, Ngoc Thang Vu, Katrin Kirchhoff, Dominic Telaar, Tanja Schultz

The experimental results reveal that Brown word clusters, part-of-speech tags and open-class words are the most effective at reducing the perplexity of factored language models on the Mandarin-English Code-Switching corpus SEAME.

automatic-speech-recognition Language Modelling +2

Corpus-level Fine-grained Entity Typing

no code implementations7 Aug 2017 Yadollah Yaghoobzadeh, Heike Adel, Hinrich Schütze

This paper addresses the problem of corpus-level entity typing, i. e., inferring from a large corpus that an entity is a member of a class such as "food" or "artist".

Entity Typing Knowledge Base Completion

Noise Mitigation for Neural Entity Typing and Relation Extraction

no code implementations EACL 2017 Yadollah Yaghoobzadeh, Heike Adel, Hinrich Schütze

For the second noise type, we propose ways to improve the integration of noisy entity type predictions into relation extraction.

Entity Typing Multi-Label Learning +1

Exploring Different Dimensions of Attention for Uncertainty Detection

no code implementations EACL 2017 Heike Adel, Hinrich Schütze

Neural networks with attention have proven effective for many natural language processing tasks.

Nonsymbolic Text Representation

no code implementations3 Oct 2016 Hinrich Schuetze, Heike Adel, Ehsaneddin Asgari

We introduce the first generic text representation model that is completely nonsymbolic, i. e., it does not require the availability of a segmentation or tokenization method that attempts to identify words or other symbolic units in text.

Denoising Tokenization

Combining Recurrent and Convolutional Neural Networks for Relation Classification

no code implementations NAACL 2016 Ngoc Thang Vu, Heike Adel, Pankaj Gupta, Hinrich Schütze

This paper investigates two different neural architectures for the task of relation classification: convolutional neural networks and recurrent neural networks.

Classification General Classification +1

Comparing Convolutional Neural Networks to Traditional Models for Slot Filling

no code implementations NAACL 2016 Heike Adel, Benjamin Roth, Hinrich Schütze

We address relation classification in the context of slot filling, the task of finding and evaluating fillers like "Steve Jobs" for the slot X in "X founded Apple".

Classification General Classification +2

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