ChaLearn Looking at People 2015 - Track 2: Cultural Event Recognition

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Previous

Final Evaluation
Sept. 7, 2015, midnight UTC

Current

Final Evaluation
Sept. 7, 2015, midnight UTC

End

Competition Ends
Sept. 12, 2015, 11:59 p.m. UTC

ChaLearn Looking at People Challenge and Workshop 2015

 

Track 2: Cultural Event Recognition

 

Example of classes in the Cultural Event challenge

 

Challenge overview

ChaLearn organizes in 2015 two parallel challenge tracks on Age Estimation and Cultural Event Recognition.

Top three ranked participants on each track will be awarded and invited to follow the workshop submission guide for ICCV 2015 workshop for inclusion of a description of their system at the ICCV 2015 workshop proceedings.

 

Track information

This is the second round for this track. We have significantly incremented the number of images and classes, adding a new "no-event" class. As a result, for this track more than 28000 images are labeled with the objective of performing automatic cultural event recognition from 100 categories in still images. These images belongs to 99 different cultural events and one non-class. This is the first dataset on cultural events from all around the globe. The Cultural Event Recognition challenge aims to investigate the performance of recognition methods based on several cues like garments, human poses, objects, background, etc. To this end, the cultural event dataset contains significant variability in terms of clothes, actions, illumination, localization and context.

For each one of the 100 classes, predicting presence/absence of an example of that class in the test image.

A more detailed information is provided on the data section of the competition. 

 

Provided Resources

  • Scripts: With the data, the organizers provides a set of scripts to facilitate the access to the data and use the evaluation metrics. More information is provided on the data page.
  • Contact: In order to clarify any doubt or to ask general assistance, you can contact the organizers at gesturechallenge@googlegroups.com or use the forum.

 

ChaLearn Looking at People Challenge and Workshop 2015

 

Track 2: Cultural Event Recognition

 

Evaluation Criteria

For the evaluation process, the output from your system should be a real-valued confidence so that a precision/recall curve can be drawn. Greater confidence values signify greater confidence that the image contains belongs to the class of interest. The classification task will be judged by the precision/recall curve. The principal quantitative measure used will be the average precision (AP). We use the area under this curve to the computation of the average precision (AP), which is calculated by numerical integration as follows:

  1. First, we compute a version of the precision/recall curve with precision monotonically decreasing. It is obtained by setting the precision for recall r to the maximum precision obtained for any recall r' ≥ r.
  2. Then, we compute the AP as the area under this curve by numerical integration. For this, we use the well know trapezoidal rule. Let f(x) the function that represents our precision/recall curve, the trapezoidal rule works by approximating the region under this curve as follows:

 

Submission format

In this track, the participants should submit a text file for each category. Each line in the text file should contain a single identifier and the confidence output by the classifier, separated by a space. The predictions TXT files for each category (100 in total) will be put in a single ZIP file and submitted to Codalab.

For example, to the category `La Tomatina', the output of your method should be a file (La_Tomatina.txt) containing the identifiers and confidences for each image:

    002234.jpg 0.056313
    010256.jpg 0.127031
    010987.jpg 0.287153
    ...

Evaluation

For this track, we provide a file (evaluate.py) which contains the method for evaluation. This script allows to get the final mean average precision value. In order to ensure the proper operation of the script we need to create the following directory structure:

Track2/                       % main directory

Track2/program/        % this folder should contain this script

Track2/input/ref/        % this folder contains the ground truth for validation

Track2/input/res/       % this folder contains the results of the participants for each category (see the format in the previous section)

Track2/output/           % contains the output of the script (a file with the final final mean average precision)

To obtain the final mean average precision (mAP) for all the categories, in the same way performed in the Codalab platform, we must go to the main directory and run the next command:

python program/evaluate.py input output

 

CHALEARN Contest Rules for ChaLearn Looking at People 2015

Official rules

Common terms used in these rules:

These are the official rules that govern how the ChaLearn Looking at People 2015 contest promotion will operate. This promotion will be simply referred to as the “contest” or the “challenge” throughout the rest of these rules and may be abbreviated on our website, in our documentation, and other publications as ChaLearn LAP.
In these rules, “organizers”, “we,” “our,” and “us” refer to CHALEARN and MS refer to Microsoft;"participant”, “you,” and “yourself” refer to an eligible contest participant.  

 

SECTION 1: Contest description

This is a skill-based contest and chance plays no part in the determination of the winner(s). The goal of the contest is split into two competition tracks (with a shared schedule):

Trak1: Age recognition:

Focus of the Contest: thousands of images with the objective of performing automatic age estimation of several people.

All eligible entries received will be judged using the criteria described below to determine winners.

Track 2: Cultural event recognition:

Focus of the Contest: thousands of images with the objective of performing automatic cultural event recognition from tens of categories in still images.

All eligible entries received will be judged using the criteria described below to determine winners.

 

SECTION 2: Tentative Contest Schedule

For all three tracks:

The registered participants will be notified by email of any change in the schedule.

15th June, 2015: Beginning of the quantitative competition, release of development data (Training and Validation sets).

30th August, 2015: Release of encrypted final evaluation data and validation labels. Participants can start training their methods with the whole data set.

7th September, 2015: Release of final evaluation data decryption key. Participants start predicting the results on the final evaluation data. Start predicting the results on the final evaluation labels. Deadline for code submission.

12th September, 2015: End of the quantitative competition. Deadline for submitting the predictions over the final evaluation data. Deadline for code resubmission just if only small changes have been performed (no major changes). The organizers start the code verification by running it on the final evaluation data.

15th September, 2015: Deadline for submitting the fact sheets.

19th September, 2015: Release of the verification results to the participants for review. Top ranked participants are invited to follow the workshop submission guide for inclusion at ICCV 2015 ChaLearn Looking at People workshop proceedings.

 

SECTION 3: Eligibility

You are eligible to enter this contest if you meet the following requirements:

(a) You are an individual or a team of people desiring to contribute to the tasks of the challenge and accepting to follow its rules; and

(b) You are NOT a resident of any country constrained by US export regulations included in the OFAC sanction page. Therefore residents of these countries/regions are not eligible to participate; and

(c) You are not an employee of CHALEARN or any of the sponsoring or co-organizing entities, including Visada or Microsoft; and

(d) You are not involved in any part of the administration and execution of this contest; and

(e) You are not an immediate family (parent, sibling, spouse, or child) or household member of an employee of CHALEARN, Visada, or Microsoft, or a person involved in any part of the administration and execution of this contest.

This contest is void within the geographic area identified above and wherever else prohibited by law.

If you choose to submit an entry, but are not qualified to enter the contest, this entry is voluntary, and any entry you submit is governed by the remainder of these contest rules; CHALEARN reserves the right to evaluate it for scientific purposes. If you are not qualified to submit a contest entry and still choose to submit one, under no circumstances will such entries qualify for sponsored prizes.

 

SECTION 4: Entry

To be eligible for judging, an entry must meet the following content/technical requirements:

(a) Entry contents:

The participants are required to submit prediction results and code. To be eligible for prizes, the top ranking participants are required to publicly release their code under a license of their choice, taken among popular OSI-approved licenses (http://opensource.org/licenses) and make their code accessible on-line for a period of not less than three years following the end of the challenge (only required for top three ranked participants of each competition track). To be part of the final ranking the participants will be asked to fill out a survey (fact sheet) briefly describing their method. The top ranking participants and the rest of participants are also invited (not mandatory) to submit a maximum 8-page paper for the proceedings of the ICCV ChaLearn LAP 2015 workshop. To be eligible for prizes, top ranked participants score must improve the baseline performance provided by the challenge organizers.

(b) Pre-requisite:

There is no pre-requisite to participate, including no requirement to have participated in previous challenges.

(c) Use of data provided:

All data provided by CHALEARN are freely available to the participants from the website of the challenge under license terms provided with the data. The data are available only for open research and educational purposes, within the scope of the challenge. ChaLearn and the organisers make no warranties regarding the database, including but not limited to warranties of non-infringement or fitness for a particular purpose. The copyright of the images remain the property of their respective owners. By downloading and making use of the data, you accept full responsibility for using the data. You shall defend and indemnify ChaLearn and the organisers, including their employees, Trustees, officers and agents, against any and all claims arising from your use of the data. You agree not to redistribute the data without this notice.

(1) Test data (final evaluation data):

The organizers will use test data to perform the final evaluation, hence the participants' final entry will be based on test data.

(2) Training and validation data:

The contest organizers will make available to the participants a training dataset with truth values, and a validation set with no truth values. The validation data will be used by the participants for practice purposes to validate their systems. It will be similar in composition to the test set (validation labels will be provided in the final test stage of the challenge).

(3) Post-challenge analyses:

The organizers may also perform additional post-challenge analyses using extra data, but the results will not affect the ranking of the challenge performed with the test data.

(d) Submission:

The entries of the participants will be submitted on-line via the Codalab web platform. During the development period, the participants will receive immediate feed-back on validation data released for practice purpose. For the final evaluation, the results will be computed automatically on test data submissions. The performances on test data will not be released until the challenge is over.

(e) Original work, permissions:

In addition, by submitting your entry into this contest you confirm that, to the best of your knowledge:

(1) Your entry is your own original work; and

(2) Your entry only includes material that you own, or that you have permission from the copyright/trademark owner to use.

 

SECTION 5: Potential use of entry

Other than what is set forth below, we are not claiming any ownership rights to your entry. However, by submitting your entry, you:

(a) Are granting us an irrevocable, worldwide right and license, in exchange for your opportunity to participate in the contest and potential prize awards, for the duration of the protection of the copyrights to:

(1) Use, review, assess, test and otherwise analyze results submitted or produced by your code and other material submitted by you in connection with this contest and any future research or contests sponsored by CHALEARN and Microsoft; and

(2) Feature your entry and all its content in connection with the promotion of this contest in all media (now known or later developed);

(b) Agree to sign any necessary documentation that may be required for us and our designees to make use of the rights you granted above;

(c) Understand and acknowledge that Microsoft and other entrants may have developed or commissioned materials similar or identical to your submission and you waive any claims you may have resulting from any similarities to your entry;

(d) Understand that we cannot control the incoming information you will disclose to our representatives or our co-sponsor’s representatives in the course of entering, or what our representatives will remember about your entry. You also understand that we will not restrict work assignments of representatives or our co-sponsor’s representatives who have had access to your entry. By entering this contest, you agree that use of information in our representatives’ or our co-sponsor’s  representatives unaided memories in the development or deployment of our products or services does not create liability for us under this agreement or copyright or trade secret law;

(e)

    Understand that you will not receive any compensation or credit for use of your entry, other than what is described in these official rules.

If you do not want to grant us these rights to your entry, please do not enter this contest.

 

SECTION 6: Submission of entries

(a) Follow the instructions on the Codalab website to submit entries.

(b) The participants will be registered as mutually exclusive teams. Each team may submit only one single final entry. We are not responsible for entries that we do not receive for any reason, or for entries that we receive but are not functioning properly.

(c) The participants must follow the instructions. We will automatically disqualify incomplete or invalid entries.

 

SECTION 7: Judging the entries

The board of CHALEARN will select a panel of judges to judge the entries; all judges will be forbidden to enter the contest and will be experts in causality, statistics, machine learning, or a related field, or experts in challenge organization.  A list of the judges will be made available upon request. The judges will review all eligible entries received and select three winners for each of the three competition tracks based upon the prediction score on test data. The judges will verify that the winners complied with the rules, including that they documented their method by filling out a fact sheet.

The decisions of these judges are final and binding. The distribution of prizes according to the decisions made by the judges will be made within three (3) months after completion of the last round of the contest. If we do not receive a sufficient number of entries meeting the entry requirements, we may, at our discretion based on the above criteria, not award any or all of the contest prizes below.  In the event of a tie between any eligible entries, the tie will be broken by giving preference to the earliest submission, using the time stamp of the submission platform.

 

SECTION 8: Prizes and Awards

(a) Microsoft, ChaLearn, University of Barcelona, Human Pose Recovery and Behavior Analysis Group, Disney Research, Facebook, Google, NVidia, and Amazon are the financial sponsors of this contest. There will be economic incentive prizes and travel grants for the winners (based on availability) to boost contest participation; these prizes will not require participants to enter into an IP agreement with any of the sponsors, to disclose algorithms, or to deliver source code to them.

(b) Incentive Prizes for the track competitions

First place: 1500 dollars, 1st winner certificate, 500 dollars travel grant (*), and NVIDIA Titan X device

Second place: 1000 dollars, 2nd winner certificate, 500 dollars travel grant (*), and NVIDIA Titan X device

Third place: 500 dollars, 3th winner certificate, 500 dollars travel grant (*), and NVIDIA Titan X device

(*) The amount will be based on need and availability. The travel award may be used for one of the workshops organized in conjunction with the challenge. The award money will be granted in reimbursement of expenses including airfare, ground transportation, hotel, or workshop registration. Reimbursement is conditioned on (i) attending the workshop, (ii) making an oral presentation of the methods used in the challenge, and (iii) presenting original receipts and boarding passes.

(c) Travel awards:

Other travel awards may be distributed to deserving participants based upon need and availability.

(d) If for any reason the advertised prize is unavailable, unless to do so would be prohibited by law, we reserve the right to substitute a prize(s) of equal or greater value, as permitted. We will only award one prize per team within each competition track, but the team can obtain prizes from different tracks.  If you are selected as a potential winner of this contest:

    1. If your prize is not in cash, you may not exchange your prize for cash; you may not exchange any prize for other merchandise or services.
    2. You may not designate someone else as the winner. If you are unable or unwilling to accept your prize, we will award it to an alternate potential winner.
    3. If you accept a prize, you will be solely responsible for all applicable taxes related to accepting the prize.
    4. If you are a minor in your place of residence, we may award the prize to your parent/legal guardian on your behalf and your parent/legal guardian will be designated as the winner.

SECTION 9: Other Sponsored Events

 

(1) To stimulate participation, the organizers are making available several channels of scientific paper publication. Publishing papers is optional and will not be a condition to entering the challenge or winning prizes.

(2) The results of the challenge will be published in the ICCV 2015 workshop proceedings. The collection of papers could also be printed as a book in the Challenges in Machine Learning series of Microtome (http://www.mtome.com/Publications/CiML/ciml.html).

(3) Best conference papers related to the participant methods can also be invited to be extended and submitted to an impact factor journal special issue.

The organizers may also sponsor other events to stimulate participation.

 

SECTION 10: Notifications

If there is any change to data, schedule, instructions of participation, or these rules, the registered participants will be notified at the email they provided with the registration.


If you are a potential winner, we will notify you by sending a message to the e-mail address listed on your final entry within seven days following the determination of winners. If the notification that we send is returned as undeliverable, or you are otherwise unreachable for any reason, we may award the prize to an alternate winner, unless forbidden by applicable law.


Winners who have entered the contest as a team will be responsible to share any prize among their members. The prize will be delivered to the registered team leader. If this person becomes unavailable for any reason, the prize will be delivered to be the authorized account holder of the e-mail address used to make the winning entry.

If you are a potential winner, we may require you to sign a declaration of eligibility, use, indemnity and liability/publicity release and applicable tax forms. If you are a potential winner and are a minor in your place of residence, and we require that your parent or legal guardian will be designated as the winner, and we may require that they sign a declaration of eligibility, use, indemnity and liability/publicity release on your behalf. If you, (or your parent/legal guardian if applicable), do not sign and return these required forms within the time period listed on the winner notification message, we may disqualify you (or the designated parent/legal guardian) and select an alternate selected winner.

 

SECTION 12: On-line notification

We will post changes in the rules or changes in the data as well as the names of confirmed winners (after contest decisions are made by the judges) online on http://gesture.chalearn.org/. This list will remain posted for one year or will be made available upon request by sending email to mmgesture@chalearn.org.

 

SECTION 13: Conditions

By entering this contest you agree:

(a) To abide by these official rules;

(b) To the extent allowable under applicable law, to release and hold harmless CHALEARN and University of Barcelona, their respective parents, subsidiaries, affiliates, employees and agents from any and all liability or any injury, loss, damage, right, claim or action of any kind arising from or in connection with this contest or any prize won save for residents of the United Kingdom, Chile, Korea, Greece, Brazil, Turkey, Hong Kong, France and Germany with respect to claims resulting from death or personal injury arising from CHALEARN’s and University of Barcelona’s negligence, for residents of the United Kingdom with respect to claims resulting from the tort of deceit or any other liabilities that may not be excluded by law, and for residents of Australia in respect of any implied condition or warranty the exclusion of which from these official rules would contravene any statute or cause any part of these official rules to be void;

(c) That CHALEARN's decisions will be final and binding on all matters related to this contest; and

(d) That by accepting a prize, CHALEARN and University of Barcelona may use your team name, your name, and your place of residence on-line and in print, or in any other media, in connection with this contest, without payment or compensation to you. The declaration of eligibility, use, indemnity and liability/publicity release provided to the potential winner will make reference to obtaining his/her free consent to use his/her name and place of residence. In any case, the lack of such consent does not prevent the winner from receiving the prize.

(e) This contest will be governed by the laws of the state of California, and you consent to the exclusive jurisdiction and venue of the courts of the state of California for any disputes arising out of this contest. For residents of Austria only: you may withdraw your submission from this contest within seven days of your entry. If you withdraw within seven days of entry, your submission will be returned to you, and we will not make any use of your submission in the future. However, you will not be eligible to win a prize. If you do not withdraw within seven days of entry, you will be bound by the provisions of these official rules. For residents of the United Kingdom only: the provisions of the contracts (rights of third parties) act 1999 will not apply to this agreement. For residents of New Zealand only: the provisions of the contracts (privity) act of 1982 will not apply to this agreement. For Quebec residents: any litigation respecting the conduct or organization of a publicity contest may be submitted to the R&eacutegie des Alcools, des Courses et des Jeux for ruling. Any litigation respecting the awarding of a prize may be submitted to the R&eacutegie only for the purpose of helping the parties reach a settlement. For residents of Israel only: this agreement does not entitle third parties to benefits under this agreement as defined in Chapter “D“ of the Contracts Act (General Part) - 1973.

(f) The following terms of use apply for Cultural Event Recognition data: The data are available only for research and educational purposes, within the scope of the challenge. ChaLearn and the organizers make no warranties regarding the database, including but not limited to warranties of non-infringement or fitness for a particular purpose. The copyright of the images remain the property of their respective owners. By downloading and making use of the data, you accept full responsibility for using the data. You shall defend and indemnify ChaLearn and the organizers, including their employees, Trustees, officers and agents, against any and all claims arising from your use of the data. You agree not to redistribute the data without this notice.

 

SECTION 14: Unforeseen event

If an unforeseen or unexpected event (including, but not limited to: someone cheating; a virus, bug, or catastrophic event corrupting data or the submission platform; someone discovering a flaw in the data or modalities of the challenge) that cannot be reasonably anticipated or controlled, (also referred to as force majeure) affects the fairness and / or integrity of this contest, we reserve the right to cancel, change or suspend this contest. This right is reserved whether the event is due to human or technical error. If a solution cannot be found to restore the integrity of the contest, we reserve the right to select winners based on the criteria specified above from among all eligible entries received before we had to cancel, change or suspend the contest subject to obtaining the approval from the R&eacutegie des Alcools, des Courses et des Jeux with respect to the province of Quebec.

Computer "hacking" is unlawful. If you attempt to compromise the integrity or the legitimate operation of this contest by hacking or by cheating or committing fraud in any way, we may seek damages from you to the fullest extent permitted by law. Further, we may ban you from participating in any of our future contests, so please play fairly.

 

SECTION 15: Sponsor

ChaLearn is a sponsor of this contest.
955 Creston Road,
Berkeley, CA 94708, USA
events@chalearn.org

and

Microsoft, University of Barcelona, Human Pose Recovery and Behavior Analysis group, Amazon, Google, Facebook, NVidia, and Disney Research are the co-sponsors of this contest. Additional sponsors can be added during the competition period.

 

SECTION 16: Privacy

During the development phase of the contest and when they submit their final entries, contest participants do not need to disclose their real identity, but must provide a valid email address where we can be deliver notifications to them regarding the contest. To be eligible for prizes, however, contest participants will need to disclose their real identity to contest organizers, informing them by email of their name, professional affiliation, and address. To enter the contest, the participants will need to become users of the Codalab platform. Any profile information stored on this platform can be viewed and edited by the users. After the contest, the participants may cancel their account with the Codalab and cease to be users of that platform. All personal information will then be destroyed. The Codalab privacy policy will apply to contest information submitted by participants on the Codalab. Otherwise, CHALEARN's privacy policy will apply to this contest and to all information that we receive from your entry that we receive directly from you or which you have submitted as part of your contest entry on the Codalab. Please read the privacy policy on the contest entry page before accepting the official rules and submitting your entry. Please note that by accepting the official rules you are also accepting the terms of the CHALEARN privacy policy: http://www.chalearn.org/privacy.html.

Development

Start: June 15, 2015, midnight

Description: In this phase you should submit your results over the VALIDATION SET. Please remember submit a ZIP file containing only the 100 text files with your results for each category. (NO FOLDERS). Processing your results may take several minutes to complete (60-90 min. approx.)

Final Evaluation

Start: Sept. 7, 2015, midnight

Description: In this phase you should submit your results over the TEST SET. Please remember submit a ZIP file containing only the 100 text files with your results for each category. (NO FOLDERS). Processing your results may take several minutes to complete (60-90 min. approx.)

Competition Ends

Sept. 12, 2015, 11:59 p.m.

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