NLPCC-2021 Shared Task on AutoIE2: Sub-Event Identification

Leaderboard with Few Sample

Rank	TeamName	Organization	Acc-score
1	HUMAN	NLPCC	86.33
2	BIT-Event	Beijing Institute of Technology	79.13
3	happy	Northeastern University	77.98
4	Real	Waseda University	77.40
5	Alphonse	Harbin Institute of Technology, Shenzhen	76.22
6	ZM	CUG	76.01
7	The Brainiacs	中国人民大学	75.00
8	guagua	Tianjin University	74.95
9	JHX	China University of Geosciences (Beijing)	74.91
10	CC	Renmin University	74.88
11	CUGB1012	China University of Geosciences	74.65
12	ZZN	中国地质大学	74.53
13	52wtq	NanChang Hangkong University	74.25
14	buaa_iip	Beihang University	73.28
15	IE_X	北京理工大学	57.15
16	BaselineSystem	NLPCC	70.52

Leaderboard with Data Selection

Rank	TeamName	Organization	Acc-score
1	HUMAN	NLPCC	86.33
2	BIT-Event	Beijing Institute of Technology	79.10
3	happy	Northeastern University	76.50
4	guagua	Tianjin University	76.08
5	Alphonse	Harbin Institute of Technology, Shenzhen	76.05
6	CC	Renmin University	74.72
7	The Brainiacs	中国人民大学	74.42
8	CUGB1012	China University of Geosciences	74.35
9	52wtq	NanChang Hangkong University	73.73
10	JHX	China University of Geosciences (Beijing)	73.68
11	Real	Waseda University	73.38
12	buaa_iip	Beihang University	73.18
13	IE_X	北京理工大学	67.22
14	BaselineSystem	NLPCC	70.85

Overall Leaderboard

Rank	TeamName	Organization	Acc-score
1	HUMAN	NLPCC	86.33
2	BIT-Event	Beijing Institute of Technology	79.12
3	happy	Northeastern University	77.24
4	Alphonse	Harbin Institute of Technology, Shenzhen	76.14
5	guagua	Tianjin University	75.52
6	Real	Waseda University	75.39
7	CC	Renmin University	74.80
8	The Brainiacs	中国人民大学	74.71
9	CUGB1012	China University of Geosciences	74.50
10	JHX	China University of Geosciences (Beijing)	74.30
11	52wtq	NanChang Hangkong University	73.99
12	ZM	CUG	73.43
13	buaa_iip	Beihang University	73.23
14	ZZN	中国地质大学	72.69
15	IE_X	北京理工大学	62.19
16	BaselineSystem	NLPCC	70.69

Background

Sub-events identification is a very fundamental problem in the field of information extraction, especially in emergency situations (e.g., terrorist attacks). It is challenging for two reasons:

1. data confusing and imbalance. Events usually evolve rapidly and successive sub-events occur. Only a few target sub-events data need to be identifid from the large volume of events related data.
2. low resource. Usually only a limited amount of labelled seed data is given for learning and more annotating datasets are expensive and time consuming.

However, the existing works cannot fully meet the requirements, and thus better few shot learning and data selection models for sub-event identification are crucial.

Task

The goal of this task is to build an IE system (Information Extraction system) that can quickly adapt to a new occurring sub-event. Specifically, there are two settings of this task:

1. Given a large number of event-related corpus and a few labelled seed data, the task aims to build an IE system which may identify the target sub-events.
2. Besides the machine learning model designing, annotating data selected from the unlabeled corpus is also allowed, but the size of the labelled data from the unlabeled corpus is fixed. How to select the best data to annotate and supply training dataset is also an important step in this task.

The task settings are very practical, thus the proposed solutions may generalize well in real world applications.

Note:

1. Three sub-event would be presented in the task and will be released with the seed dataset.
2. Human annotation and correction are allowed for training dataset which is composed of seedset and data annotated by participants from unlabeled corpus.
3. The size of data annotated by participants may not exceed 100 per sub-event.

Data

All corpus provided are obtained from comments (generally 8 to 120 characters long). The corpus are split into three parts, i.e., unlabeled dataset, seed dataset and testing dataset. The labelled seed dataset(100 samples per event) and unlabeled dataset(100K for 3 events) are released to participants to construct their own training set and developing set, and the testing dataset(around 2k per event) is used for final evaluation.

More details about these three datasets are as follows:

1. Unlabelled dateset: totally 100,000 samples related to the three sub-events.
2. Seed dataset: 100 labeled samples per sub-event.
3. Test dataset : 2000 labeled samples per sub-event.

Tip: Testset will be released untill 2021/6/5.

Submission & Evaluation

For submission, please write the prediction result into a single file and email it to Xingyu Bai [email protected]

There are two settings for this evaluation task and the final evaluation is the average accuracy of two settings;

1. few sample problem setting: the size of training data may not exceed 100 per sub-event, human annotation is not allowed.
2. data selection problem setting: human annotation is allowed. The size of training data which is composed of seedset and data annotated from unlabeled corpus may not exceed 200.

The format of submission file should be the same as the format of given submission-format.txt file under taskdata folder. To be specific, each sample in the test dataset is labelled by 3, 2, 1 and 0, which represent Trade War, Tokyo Olympic Games, COVID-19 and negative samples, respectively.

An eval.py script is provided to calculate the accuracy and verify prediction format.

Prizes

This task will award prizes for top 3 teams. Winners will get the award certificates issued by NLPCC and CCF Technical Committee on Chinese Information Technology.

First prize: 5000 RMB + award certificate

Second prize: 3000 RMB + award certificate

Third prize: 1000 RMB + award certificate

Website

Further arrangement and baseline system will be published in https://github.com/IIGROUP/AutoIE2

Organizers:

Xuefeng Yang

email: [email protected]

Weigang Guo

email: [email protected]

Xingyu Bai (Tsinghua University, Shenzhen International Graduate School)

email: [email protected]

Yujiu Yang (Tsinghua University, Shenzhen International Graduate School)

email: [email protected]