NEW! Challenge winners announced!

ClariQ Overview

ClariQ (pronounced as Claire-ee-que) challenge is organized as part of the Conversational AI challenge series (ConvAI3) at Search-oriented Conversational AI (SCAI) EMNLP workshop in 2020. The main aim of the conversational systems is to return an appropriate answer in response to the user requests. However, some user requests might be ambiguous. In IR settings such a situation is handled mainly through the diversification of a search result page. It is however much more challenging in dialogue settings. Hence, we aim to study the following situation for dialogue settings:

• a user is asking an ambiguous question (a question to which one can return > 1 possible answers);
• the system must identify that the question is ambiguous, and, instead of trying to answer it directly, ask a good clarifying question.

The main research questions we aim to answer as part of the challenge are the following:

• RQ1: When to ask clarifying questions during dialogues?
• RQ2: How to generate the clarifying questions?

The detailed description of the challenge can be found in the following document.

How to participate?

• In order to get to the leaderboard please register your team here.
• The datasets, baselines and evaluation scripts for the Stage 1 are available in the following repository https://github.com/aliannejadi/ClariQ
• Email us if you have any questions
• 

News

• June 10, 2020: Microsoft Research is sponsoring data collection for the Stage 1
• July 7, 2020: Announcing the Stage 1 of ClariQ challenge
• July 8, 2020: Announcing the performance of the baselines
• July 20, 2020: Send us your solution for Stage 1 every Friday via email
• July 25, 2020: Ask us question
• July 30, 2020: Please join our kick-off webinar on August 4, 8 am PST (convert to your time zone) using the following meeting link, where
  • we give a brief overview of the challenge;
  • show how to run baselines;
  • answer all your questions.
• July 30, 2020: Don't want to miss any updates please register here
• August 4, 2020: Google is sponsoring the competion prize (see the details below)
• August 4, 2020: We held the kick-off webinar. Missed it? You can watch the playback here.
• August 10, 2020: New baselines for the question_relevance have been added. The code is also available on Google Colab.
• September 08, 2020: Due to multiple requests, we have extended the deadline for participation in Stage 1 for one week.
• September 22, 2020: Amazon Science is sponsoring the Stage 2 of the challenge
• September 23, 2020: We are happy to announce four teams which were selected for the Stage 2:
  • Karl
  • NTES_ALONG
  • TAL ML
  • Soda
• September 23, 2020: Stage 2 files and instructions are added to the ClariQ GitHub repo.
• November 19, 2020: Stage 2 results are out.
• November 19, 2020: Challenge winners are announced.

Awards

Google is sponsoring the competition award with the GCP Credits, which we are planning to award as follows:

• 1st place: $2'500 $3'000 credits
• 2nd place: $1'500 $2'000 credits
• 3rd place: $1'000 credits

IMPORTANT! Please note that GCP Credits can only be granted where available and are subject to the Terms and Conditions and product availability. If the competition winner is from a region where the program is not launched, we will, unfortunately, not be able to issue the prize.

Challenge Design

The challenge will be run in two stages:

Stage 1: intial dataset (sponsored by Microsoft Research)

In Stage 1, we provide to the participants the datasets that include:

• User Request: an initial user request in the conversational form, e.g., "What is Fickle Creek Farm?", with a label reflects if clarification is needed to be ranged from 1 to 4;
• Clarification questions: a set of possible clarifying questions, e.g., "Do you want to know the location of fickle creek farm?";
• User Answers: each question is supplied with a user answer, e.g., "No, I want to find out where can i purchase fickle creek farm products."

To answer RQ1: Given a user request, return a score [1 −4] indicating the necessity of asking clarifying questions.

To answer RQ2: Given a user request which needs clarification, returns the most suitable clarifying question. Here participants are able to choose: (1) either select the clarifying question from the provided question bank (all clarifying questions we collected), aiming to maximize the precision, (2) or choose not to ask any question (by choosing Q0001 from the question bank.)

The dataset is stored in the following repository https://github.com/aliannejadi/ClariQ, together with evaluation scripts and baseline.

Stage 2: human-in-the-loop (sponsored by Amazon Science)

The TOP-4 systems from Stage 1 are exposed to real users. Their responses—answers and clarifying questions—are rated by the users. At that stage, the participating systems are put in front of human users. The systems are rated on their overall performance. At each dialog step, a system should give either a factual answer to the user's query or ask for clarification. Therefore, the participants would need to:

• ensure their system can answer simple user questions
• make their own decisions on when clarification might be appropriate
• provide clarification question whenever appropriate
• interpret user's reply to the clarifying question

The participants would need to strike a balance between asking too many questions and providing irrelevant answers.

Note that the setup of this stage is quite different from Stage 1. Participating systems would likely need to operate as a generative model, rather than a retrieval model. One option would be to cast the problem as generative from the beginning and solve the retrieval part of Stage 1, e.g., by ranking the offered candidates by their likelihood.

Alternatively, one may solve Stage 2 by retrieving a list of candidate answers (e.g., by invoking Wikipedia API or the Chat Noir API that we describe above) and ranking them as in Stage 1.

For further information about Stage 2 design and auxiliary files, please visit ClariQ repo.

Timeline

• Stage 1 will take place from July 7, 2020 -- September 9, 2020 September 16, 2020. Up until September 9, 2020 September 16, 2020 participants will be able to submit their models (source code) and solutions to be evaluated on the test set using automated metrics (which we will run on our servers). The current leaderboards will be visible to everyone.
• Stage 2 will start on September 10, 2020 September 17 2020. On September 10, 2020 September 17 2020 the run submission for Stage 1 will be locked, and the best teams will be invited to submit their codes for the second stage to be evaluated over the next month using crowd workers.

Winners will be announced at SCAI@EMNLP2020 which will take place in November 19-20 (exact details TBD).

Evaluation

Participants' models will then be compared in two ways after two stages:

• automated evaluation metrics on a new test set hidden from the competitors;
• evaluation with crowd workers through MTurk.

The winning will be chosen based on these scores.

Metrics

There are three types of metrics we will evaluate:

• Automated metrics As system automatic evaluation metrics we use MRR, P@[1,3,5,10,20], nDCG@[1,3,5,20]. These metrics are computed as follows: a selected clarifying question, together with its corresponding answer are added to the original request. The updated query is then used to retrieve (or re-rank) documents from the collection. The quality of a question is then evaluated by taking into account how much the question and its answer affect the performance of document retrieval. Models are also evaluated in how well they are able to rank relevant questions higher than other questions in the question bank. For this task, that we call 'question relevance', the models are evaluated in terms of Recall@[10,20,30]. Since the precision of models is evaluated in the document relevance task, here we focus only on recall.

• Crowd workers given the entrant's model code, we will run live experiments where Turkers chat to their model given instructions identical to the creation of the original dataset, but with new profiles, and then score its performance. Turkers will score the models between 1-5.

Rules

• Participants must provide their source code so that the hidden test set evaluation and live experiments can be computed without the team's influence, and so that the competition has further impact as those models can be released for future research to build off them. Code can be in any language but a thin python wrapper must be provided in order to work with our evaluation and live experiment code.
• We will require that the winning systems also release their training code so that their work is reproducible (although we also encourage that for all systems).
• Participants are free to augment training with other datasets as long as they are publicly released (and hence, reproducible). Hence, all entrants are expected to work on publicly available data or release the data they use to train.

Submission

Stage 1

Please send two files per run as to clariq@convai.io, indicating your team's name, as well as your run ID. Each team is allowed to send a maximum of one run per week. You'll also need to share your GitHub repository with us. The run files should be formatted as described below.

Run file format

Each run consists of two separate files:

• Ranked list of questions for each topic;
• Predicted clarification_need label for each topic.

Below we explain how each file should be formatted.

Question ranking

This file is supposed to contain a ranked list of questions per topic. The number of questions per topic could be any number, but we evaluate only the top 30 questions. We follow the traditional TREC run format. Each line of the file should be formatted as follows:

<topic_id> 0 <question_id> <ranking> <relevance_score> <run_id>

Each line represents a relevance prediction. <relevance_score> is the relevance score that a model predicts for a given <topic_id> and <question_id>. <run_id> is a string indicating the ID of the submitted run. <ranking> denotes the ranking of the <question_id> for <topic_id>. Practically, the ranking is computed by sorting the questions for each topic by their relevance scores. Here are some example lines:

170 0 Q00380 1 6.53252 sample_run
170 0 Q02669 2 6.42323 sample_run
170 0 Q03333 3 6.34980 sample_run
171 0 Q03775 1 4.32344 sample_run
171 0 Q00934 2 3.98838 sample_run
171 0 Q01138 3 2.34534 sample_run

This run file will be used to evaluate both question relevance and document relevance. Sample runs can found in ./sample_runs/ directory. Also, sample Google Colab Notebookes are available. Please check ClariQ repo for more information.

Clarification need

This file is supposed to contain the predicted clarification_need labels. Therefore, the file format is simply the topic_id and the predicted label. Sample lines can be found below:

171 1
170 3
182 4

More information and example run files can be found at https://github.com/aliannejadi/ClariQ.

Stage 2

To submit an entry, create a private repo with your model that works with our evaluation code, and share it with the following github accounts: aliannejadi, varepsilon, julianakiseleva.

See https://github.com/aliannejadi/ClariQ for example baseline submissions.

You are free to use any system (e.g. PyTorch, Tensorflow, C++,..) as long as you can wrap your model for the evaluation. The top level README should tell us your team name, model name, and where the eval_ppl.py, eval_hits.py etc. files are so we can run them. Those should give the numbers on the validation set. Please also include those numbers in the README so we can check we get the same. We will then run the automatic evaluations on the hidden test set and update the leaderboard. You can submit a maximum of once per week.

We will use the same submitted code for the top performing models for computing human evaluations when the submission system is locked on September 9, 2020 September 17, 2020. The deadline for submitting systems for Stage 2 is November 1, 2020.

The submitted systems must produce the output in a reasonable time window (1-2 hours) on our system with the following configuration:

• CPU: Core i7-7700
• RAM: 32 Gb RAM
• GPU: 1080 Ti

Note: All submitted systems must be accompanied with a ready-to-use Docker container.

Automatic Evaluation Leaderboard (hidden test set)

Document Relevance

Dev

ًRank	Creator	Model Name	MRR	P@1	nDCG@3	nDCG@5
-	ClariQ	Oracle BestQuestion	0.4882	0.4187	0.3337	0.3064
1	Karl	Roberta	0.3640	0.2813	0.2002	0.1954
2	NTES_ALONG	Reranker-v4	0.3761	0.3000	0.2113	0.1955
3	Soda	BERT+BM25-v2	0.3180	0.2437	0.1625	0.1550
4	NTES_ALONG	Reranker-v2	0.3573	0.2625	0.2112	0.1982
5	ClariQ	BM25	0.3096	0.2313	0.1608	0.1530
6	Soda	BERT+BM25	0.3096	0.2313	0.1608	0.1530
7	ClariQ	NoQuestion	0.3000	0.2063	0.1475	0.1530
8	Pinta	BERT-v3	0.3596	0.2750	0.1879	0.1882
9	NTES_ALONG	BM25+Roberta	0.3606	0.2813	0.1942	0.1891
10	CogIR	BERTlets-fusion -topics-passages	0.3103	0.2125	0.1747	0.1701
11	Pinta	BERT	0.3297	0.2250	0.1792	0.1701
12	CogIR	BERTlets-fusion- topics-div-passages-v2	0.3315	0.2500	0.1763	0.1660
13	CogIR	BERTlets-fusion- topics-div-passages	0.3236	0.2250	0.1739	0.1653
14	Pinta	BERT-v2	0.3158	0.2313	0.1669	0.1600
15	Karl	Roberta-v2	0.3811	0.2938	0.2193	0.2093
16	NTES_ALONG	Reranker-v3	0.3520	0.2687	0.2033	0.1925
17	NTES_ALONG	Recall+Rerank	0.3627	0.2750	0.2047	0.1935
18	Soda	BERT-based-v2	0.3306	0.2437	0.1699	0.1702
19	Soda	BERT-based	0.3497	0.2625	0.1849	0.1762
20	Algis	USE-QA	0.3517	0.2563	0.1943	0.1815
21	Pinta	Triplet	0.3573	0.2688	0.1988	0.1920
22	TAL ML	Roberta+++	0.3619	0.2750	0.2060	0.1979
23	NTES_ALONG	Recall+Rescore	0.3722	0.2813	0.2185	0.2047
24	NTES_ALONG	BM25_plus+Roberta	0.3587	0.2813	0.1952	0.1869
25	Algis	BART-based	0.3628	0.2687	0.2003	0.1914
26	TAL ML	Roberta++	0.3583	0.2687	0.1977	0.1931
27	ClariQ	BERT-ranker	0.3453	0.2563	0.1824	0.1744
28	ClariQ	BERT-reranker	0.3453	0.2563	0.1824	0.1744
-	ClariQ	Oracle WorstQuestion	0.0841	0.0125	0.0252	0.0313

Test

ًRank	Creator	Model Name	MRR	P@1	nDCG@3	nDCG@5
-	ClariQ	Oracle BestQuestion	0.4881	0.4275	0.2107	0.1759
1	Karl	Roberta	0.3190	0.2342	0.1265	0.1130
2	NTES_ALONG	Reranker-v4	0.3140	0.2379	0.1229	0.1097
3	Soda	BERT+BM25-v2	0.3216	0.2453	0.1196	0.1097
4	NTES_ALONG	Reranker-v2	0.3034	0.2119	0.1171	0.1033
5	ClariQ	BM25	0.3134	0.2193	0.1151	0.1061
6	Soda	BERT+BM25	0.3134	0.2193	0.1151	0.1061
7	ClariQ	NoQuestion	0.3223	0.2268	0.1134	0.1059
8	Pinta	BERT-v3	0.3044	0.2119	0.1131	0.1021
9	NTES_ALONG	BM25+Roberta	0.3045	0.2156	0.1108	0.1025
10	CogIR	BERTlets-fusion -topics-passages	0.3025	0.2193	0.1078	0.0983
11	Pinta	BERT	0.2934	0.2045	0.1078	0.0969
12	CogIR	BERTlets-fusion- topics-div-passages-v2	0.2885	0.1859	0.1072	0.1010
13	CogIR	BERTlets-fusion- topics-div-passages	0.2908	0.1970	0.1055	0.0990
14	Pinta	BERT-v2	0.2815	0.1933	0.1043	0.0934
15	Karl	Roberta-v2	0.2890	0.1933	0.1035	0.0941
16	NTES_ALONG	Reranker-v3	0.3006	0.2230	0.1031	0.0970
17	NTES_ALONG	Recall+Rerank	0.2948	0.1933	0.1029	0.0919
18	Soda	BERT-based-v2	0.2803	0.1896	0.1021	0.0981
19	Soda	BERT-based	0.2600	0.1784	0.0983	0.0915
20	Algis	USE-QA	0.2782	0.1822	0.0978	0.1003
21	Pinta	Triplet	0.2672	0.1747	0.0968	0.0906
22	TAL ML	Roberta+++	0.2835	0.2007	0.0965	0.0915
23	NTES_ALONG	Recall+Rescore	0.2799	0.1970	0.0955	0.0856
24	NTES_ALONG	BM25_plus+Roberta	0.2720	0.1822	0.0930	0.0870
25	Algis	BART-based	0.2622	0.1710	0.0923	0.0848
26	TAL ML	Roberta++	0.2602	0.1747	0.0922	0.0833
27	ClariQ	BERT-ranker	0.2562	0.1784	0.0896	0.0821
28	ClariQ	BERT-reranker	0.2553	0.1784	0.0892	0.0818
-	ClariQ	Oracle WorstQuestion	0.0541	0.0000	0.0097	0.0154

Question Relevance

Dev

ًRank	Creator	Model Name	Recall@5	Recall@10	Recall@20	Recall@30
1	NTES_ALONG	Reranker-v4	0.3604	0.6749	0.8478	0.8761
2	NTES_ALONG	Reranker-v3	0.3648	0.6753	0.8510	0.8744
3	NTES_ALONG	Reranker-v2	0.3648	0.6738	0.8417	0.8633
4	CogIR	BERTlets-fusion- topics-div-passages-v2	0.3542	0.6424	0.7653	0.7997
5	TAL ML	Roberta++	0.3649	0.6694	0.8265	0.8587
6	Karl	Roberta-v2	0.3611	0.6539	0.7993	0.8384
7	CogIR	BERTlets-fusion -topics-passages	0.3555	0.6429	0.7640	0.7854
8	Karl	Roberta	0.3618	0.6631	0.8128	0.8434
9	Soda	BERT+Bm25	0.3454	0.6166	0.7354	0.7621
10	Soda	BERT+Bm25-v2	0.3398	0.6166	0.7525	0.7792
11	Soda	BERT-based	0.3523	0.6247	0.7354	0.7636
12	NTES_ALONG	Recall+Rerank	0.3674	0.6678	0.7869	0.8085
13	Soda	BERT-based-v2	0.3544	0.6287	0.7544	0.8177
14	Pinta	BERT	0.3492	0.6196	0.7337	0.7632
15	CogIR	BERTlets-fusion- topics-div-passages	0.3528	0.6393	0.7506	0.7890
16	NTES_ALONG	BM25_plus+Roberta	0.3637	0.6409	0.7484	0.7793
17	Pinta	BERT-v3	0.3583	0.6358	0.7616	0.7852
18	NTES_ALONG	Recall+Rescore	0.3648	0.6553	0.8230	0.8367
19	ClariQ	BERT-ranker	0.3494	0.6134	0.7248	0.7542
20	Pinta	BERT-v2	0.3528	0.6393	0.7506	0.7890
21	Algis	BART-based	0.3333	0.5910	0.6689	0.6926
22	Algis	USE-QA	0.3469	0.6112	0.7052	0.7228
23	NTES_ALONG	BM25+Roberta	0.3629	0.6389	0.7285	0.7657
24	TAL ML	Roberta+++	0.3508	0.6215	0.7672	0.7978
25	ClariQ	BERT-reranker	0.3475	0.6122	0.6913	0.6913
26	ClariQ	BM25	0.3245	0.5638	0.6675	0.6913
27	Pinta	Triplet	0.3471	0.5871	0.6653	0.6846

Test

ًRank	Creator	Model Name	Recall@5	Recall@10	Recall@20	Recall@30
1	NTES_ALONG	Reranker-v4	0.3404	0.6329	0.8335	0.8744
2	NTES_ALONG	Reranker-v3	0.3414	0.6351	0.8316	0.8721
3	NTES_ALONG	Reranker-v2	0.3382	0.6242	0.8177	0.8685
4	CogIR	BERTlets-fusion- topics-div-passages-v2	0.3384	0.6314	0.8073	0.8573
5	TAL ML	Roberta++	0.3395	0.6251	0.8176	0.8568
6	Karl	Roberta-v2	0.3355	0.6237	0.7990	0.8492
7	CogIR	BERTlets-fusion -topics-passages	0.3314	0.6149	0.8074	0.8448
8	Karl	Roberta	0.3406	0.6255	0.8006	0.8436
9	Soda	BERT+BM25	0.3272	0.6061	0.8013	0.8433
10	Soda	BERT+BM25-v2	0.3013	0.5866	0.8006	0.8433
11	Soda	BERT-based	0.3338	0.6099	0.8023	0.8432
12	NTES_ALONG	Recall+Rerank	0.3435	0.6296	0.7959	0.8424
13	Soda	BERT-based-v2	0.3067	0.5893	0.7991	0.8415
14	Pinta	BERT	0.3438	0.6228	0.7987	0.8409
15	CogIR	BERTlets-fusion- topics-div-passages	0.3333	0.6225	0.8039	0.8392
16	NTES_ALONG	BM25_plus+Roberta	0.3361	0.6219	0.7960	0.8360
17	Pinta	BERT-v3	0.3291	0.6066	0.7902	0.8345
18	NTES_ALONG	Recall+Rescore	0.3432	0.6229	0.7857	0.8211
19	ClariQ	BERT-ranker	0.3440	0.6242	0.7849	0.8190
20	Pinta	BERT-v2	0.3271	0.6012	0.7884	0.8188
21	Algis	BART-based	0.3408	0.6156	0.7721	0.8081
22	Algis	USE-QA	0.3454	0.6071	0.7688	0.8013
23	NTES_ALONG	BM25+Roberta	0.3329	0.6027	0.7650	0.8004
24	TAL ML	Roberta+++	0.3212	0.5786	0.7204	0.7739
25	ClariQ	BERT-reranker	0.3444	0.6062	0.7585	0.7682
26	ClariQ	BM25	0.3170	0.5705	0.7292	0.7682
27	Pinta	Triplet	0.3330	0.5809	0.7289	0.7589

Clarification Need Prediction

ًRank	Creator	Model Name	Dev			Test
			P	R	F1	P	R	F1
1	TAL ML	Roberta+++	0.6039	0.5600	0.5551	0.5981	0.6557	0.6070
2	CactusJam	Roberta+ Stats	0.6200	0.5800	0.5717	0.5963	0.5902	0.5416
3	TAL ML	Roberta++	0.5807	0.5400	0.5375	0.5290	0.5574	0.5253
4	Algis	Roberta+ CatBoost	0.1402	0.2800	0.1854	0.5171	0.5246	0.5138
5	NTES_ALONG	cneed_add_ prior_v2	0.6200	0.6000	0.5984	0.5007	0.5082	0.5018
6	NTES_ALONG	cneed_merge	0.5830	0.5200	0.5192	0.4847	0.5082	0.4960
7	NTES_ALONG	cneed_dist	0.5452	0.5200	0.5177	0.4852	0.4918	0.4868
8	Karl	Roberta-v2	0.4609	0.4600	0.4356	0.4465	0.5410	0.4871
9	NTES_ALONG	Roberta+prior	0.4554	0.4600	0.4567	0.4926	0.4754	0.4799
10	Algis	BartBoost	0.7008	0.7000	0.6976	0.4813	0.4754	0.4756
11	Soda	BERT-based-v2	0.5218	0.4800	0.4253	0.3931	0.4918	0.4350
12	Soda	BERT-based	0.5224	0.5400	0.5180	0.3901	0.4754	0.4282
13	Soda	BERT+BM25	0.5386	0.5600	0.5360	0.3930	0.4754	0.4273
14	Soda	BERT+BM25-v2	0.5992	0.5800	0.5793	0.4304	0.4262	0.4207
15	Pinta	BERT-v3	0.4083	0.5000	0.4248	0.3789	0.4590	0.4147
16	Pinta	Triplet	0.4161	0.4800	0.4178	0.3665	0.4590	0.4074
17	Pinta	BERT	0.5204	0.5000	0.5014	0.3929	0.4098	0.4004
18	NTES_ALONG	Roberta	0.3967	0.5200	0.4305	0.3546	0.4754	0.3995
19	Pinta	XGB	0.5027	0.4800	0.4841	0.3776	0.3770	0.3771

Stage 2: Multi-turn Conversations Evalation

Document Relevance

Test

ًRank	Creator	Model Name	MRR	P@1	nDCG@3	nDCG@5
1	NTES_ALONG	ClariQ_Select_System	0.1798	0.1161	0.0553	0.0536
2	TAL ML	MCAN	0.1669	0.1067	0.0522	0.0494

Challenge Winners

• First place: NTES_ALONG: Wenjie Ou, Yue Lin
• Second place: TAL ML: Hang Li, Yu Kang, Tianqiao Liu, Guowei Xu, Wenbiao Ding, Zitao Liu

Organizing team

• Mohammad Aliannejadi, University of Amsterdam, Amsterdam
• Julia Kiseleva, Microsoft Research, Seattle
• Mikhail Burtsev, MIPT, Moscow
• Aleksandr Chuklin, Google AI, Zürich
• Jeff Dalton, University of Glasgow, Glasgow

Previous ConvAI competitions

• ConvAI @ NIPS 2017 (The Conversational Intelligence Challenge)
• ConvAI2 @ NeurIPS 2018 (The Persona-Chat Challenge).

Sponsors

Sponsorship of data collection:

The Stage 1 of the challenge is sponsored by:

The Stage 2 of the challenge is sponsored by:

Participants prize is sponsored by: