United States

Previous work on multi-task learning in Natural Language Processing (NLP) often
incorporated carefully selected tasks as well as carefully tuning of
architectures to share information across tasks. Recently, it has shown that
for autoregressive language models, a multi-task second pre-training step on a
wide variety of NLP tasks leads to a set of parameters that more easily adapt
for other NLP tasks. In this paper, we examine whether a similar setup can be
used in autoencoder language models using a restricted set of semantically
oriented NLP tasks, namely all SemEval 2022 tasks that are annotated at the
word, sentence or paragraph level. We first evaluate a multi-task model trained
on all SemEval 2022 tasks that contain annotation on the word, sentence or
paragraph level (7 tasks, 11 sub-tasks), and then evaluate whether
re-finetuning the resulting model for each task specificially leads to further
improvements. Our results show that our mono-task baseline, our multi-task
model and our re-finetuned multi-task model each outperform the other models
for a subset of the tasks. Overall, huge gains can be observed by doing
multi-task learning: for three tasks we observe an error reduction of more than
40\%.


NAACL 2022

MaChAmp at SemEval-2022 Tasks 2, 3, 4, 6, 10, 11, and 12: Multi-task Multi-lingual Learning for a Pre-selected Set of Semantic Datasets

stilts

finetuning

semantics

multi-task learning

## Welcome to NAACL 2022!
The Annual Meeting of the North American Chapter of the Association for Computational Linguistics (NAACL) is taking place July 10-15, 2022 as a hybrid event, in Seattle, WA and online. We are happy to welcome all of you to conference! 
 
The main conference program features oral presentations, in-person and virtual posters and demo sessions, a plenary session for our best paper presentations and awards, keynote presentations, a plenary panel on the place of linguistics and symbolic structures in NLP, and an Industrial Track panel on Careers in NLP.
 
Posters (including Findings of NAACL 2022) and demos are grouped by areas for both the in-person and the virtual sessions. For the virtual component, the talks will be on Zoom and the posters and the demos will be in GatherTown. The Student Research Workshop and will have an oral session and a poster session.
 
The program also features 6 Tutorials and 26 Workshops.
 
 We wish you a wonderful conference!
 
[The NAACL 2022 Organizing Committee](https://2022.naacl.org/committees/organization/)

2022 Annual Conference of the North American Chapter of the Association for Computational Linguistics

workshop paper

Large Language Models have been successful in capturing compositionality of the text representations. In spite of their great success, they fail to capture true meaning of idiomatic multi-word expressions (MWEs). In this paper, we focus on the detection of idiomatic expressions. We use a dataset consisting of the literal and idiomatic usage of MWEs in English and Portuguese. Thereafter, we perform a binary classification in two different settings: zero shot and one shot, to determine if a given sentence contains an idiom or not. N shot classification for this task is defined by N number of common idioms between the training and testing sets. In this paper, we train multiple Large Language Models in both the settings and achieve an F1 score (macro) of 0.73 for the zero shot setting and an F1 score (macro) of 0.85 for the one shot setting. An implementation of our work can be found at https://github.com/ashwinpathak20/Idiomaticity_Detection_Using_Few_Shot_Learning.

It Takes One to Know One? Idiomaticity Detection using Zero and One-Shot Learning

We present our submission to SemEval 2022 Task 5 on Multimedia Automatic Misogyny Identification. We address the two tasks: Task A consists of identifying whether a meme is misogynous. If so, Task B attempts to identify its kind among shaming, stereotyping, objectification, and violence. Our approach combines a BERT Transformer with CLIP for the textual and visual representations. Both textual
and visual encoders are fused in an early-fusion fashion through a Multimodal Bidirectional Transformer with unimodally pretrained components. Our official submissions obtain macro-averaged F1=0.727 in Task A (4th position out of 69 participants) and weighted F1=0.710 in Task B (4th position out of 42 participants).

UniBO at SemEval-2022 Task 5: A Multimodal bi-Transformer Approach to the Binary and Fine-grained Identification of Misogyny in Memes

We describe SemEval-2022 Task 7, a shared task on rating the plausibility of clarifications in instructional texts. The dataset for this task consists of manually clarified how-to guides for which we generated alternative clarifications and collected human plausibility judgements. The task of participating systems was to automatically determine the plausibility of a clarification in the respective context. In total, 21 participants took part in this task, with the best system achieving an accuracy of 68.9%. This report summarizes the results and findings from 8 teams and their system descriptions. Finally, we show in an additional evaluation that predictions by the top participating team make it possible to identify contexts with multiple plausible clarifications with an accuracy of 75.2%.

SemEval-2022 Task 7: Identifying Plausible Clarifications of Implicit and Underspecified Phrases in Instructional Texts.

Thousands of new news articles appear daily in outlets in different languages. Understanding which articles refer to the same story can not only improve applications like news aggregation but enable cross-linguistic analysis of media consumption and attention. 

However, assessing the similarity of stories in news articles is challenging due to the different dimensions in which a story might vary, e.g., two articles may have substantial textual overlap but describe similar events that happened years apart.

To address this challenge, we introduce a new dataset of nearly 10,000 news article pairs spanning 18 language combinations annotated for seven dimensions of similarity as SemEval 2022 Task 8.

Here, we present an overview of the task, the best performing submissions, and the frontiers and challenges for measuring multilingual news article similarity.
While the participants of this SemEval task contributed very strong models, achieving up to 0.818 correlation with gold standard labels across languages, human annotators are capable of reaching higher correlations, suggesting space for further progress.

SemEval-2022 Task 8: Multilingual news article similarity

Word embeddings have advanced the state of the art in NLP across numerous tasks. Understanding the contents of dense neural representations is of utmost interest to the computational semantics community. We propose to focus on relating these opaque word vectors with human-readable definitions, as found in dictionaries. This problem naturally divides into two subtasks: converting definitions into embeddings, and converting embeddings into definitions. This task was conducted in a multilingual setting, using comparable sets of embeddings trained homogeneously.

CODWOE – Comparing Dictionaries and WordEmbeddings

This paper presents the shared task on Multilingual Idiomaticity Detection and Sentence Embedding, which consists of two subtasks: (a) a binary classification task aimed at identifying whether a sentence contains an idiomatic expression, and (b) a task based on semantic text similarity which requires the model to adequately represent potentially idiomatic expressions in context. Each subtask includes different settings regarding the amount of training data. Besides the task description, this paper introduces the datasets in English, Portuguese, and Galician and their annotation procedure, the evaluation metrics, and a summary of the participant systems and their results. The task had close to 100 registered participants organised into twenty five teams making over 650 and 150 submissions in the practice and evaluation phases respectively.

SemEval-2022 Task 2: Multilingual Idiomaticity Detection and Sentence Embedding

Everyday more users are using memes on social media platforms to convey a message with text and image combined. Although there are many fun and harmless memes being created and posted, there are also ones that are hateful and offensive to particular groups of people. In this article present a novel approach based on
the CLIP (Radford et al., 2021) network to detect misogynous memes and find out the types of misogyny in that meme. We participated in Task A and Task B of the Multimedia Automatic Misogyny Identification (MaMi) challenge (Fersini et al., 2022) and our best scores are 0.694 and 0.681 respectively.

Mitra Behzadi at SemEval-2022 Task 5 : Multimedia Automatic Misogyny
Identification method based on CLIP

Task 10 in SemEval 2022 is a composite task which entails analysis of opinion tuples, and recognition and demarcation of their nature. In this paper, we will elaborate on how such a methodology is implemented, how it is undertaken for a Structured Sentiment Analysis, and the results obtained thereof. To achieve this objective, we have adopted a bi-layered BiLSTM approach. In our research, a variation on the norm has been effected towards enhancement of accuracy, by basing the categorization meted out to an individual member as a by-product of its adjacent members, using specialized algorithms to ensure the veracity of the output, which has been modelled to be the holistically most accurate label for the entire sequence.Such a strategy is superior in terms of its parsing accuracy and requires less time. This manner of action has yielded an SF1 of 0.33 in the highest-performing configuration.

SSN_MLRG1 at SemEval-2022 Task 10: Structured Sentiment Analysis using 2-layer BiLSTM

Idioms are lexically-complex phrases whose meaning cannot be derived by compositionally interpreting their components. Although the automatic identification and understanding of idioms is essential for a wide range of Natural Language Understanding tasks, they are still largely under-investigated.
This motivated the organization of the SemEval-2022 Task 2, which is divided into two multilingual subtasks: one about idiomaticity detection, and the other about sentence embeddings. In this work, we focus on the first subtask and propose a Transformer-based dual-encoder architecture to compute the semantic similarity between a potentially-idiomatic expression and its context and, based on this, predict idiomaticity. Then, we show how and to what extent Named Entity Recognition can be exploited to reduce the degree of confusion of idiom identification systems and, therefore, improve performance.
Our model achieves 92.1 F1 in the one-shot setting and shows strong robustness towards unseen idioms achieving 77.4 F1 in the zero-shot setting. We release our code at https://github.com/Babelscape/ner4id.

NER4ID at SemEval-2022 Task 2: Named Entity Recognition for Idiomaticity Detection

We present our strategy to address the SemEval-2022 Task 3 PreTENS
The goal of the task is to identify if a sentence is deemed acceptable or not, depending
on the taxonomic relationship that holds between a noun pair contained in the
sentence.
For sub-task 1—binary classification—we pro- pose an effective way to enhance the
robustness and the generalizability of language models for better classification on this
downstream task. We design a two-stage fine-tuning pro- procedure on the ELECTRA
language model using data augmentation techniques. Rigorous experiments are
carried out using multi-task learning and data-enriched fine-tuning. Experimental
results demonstrate that our proposed model, UU-Tax, is indeed able to generalize well
for our downstream task.
For sub-task 2— regression—we propose a simple classifier that trains on features
obtained from Universal Sentence Encoder (USE). In addition to describing the
submitted systems, we discuss other experiments that employ pre-trained language
models and data augmentation techniques. For both sub-tasks, we perform error
analysis to further understand the behavior of the proposed models. We achieved a
global F1Binary score of 91.25% in sub-task 1 and a rho score of 0.221 in sub-task 2

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It Takes One to Know One? Idiomaticity Detection using Zero and One-Shot Learning

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