{ "fetched_at": "2026-10-24T16:00:20Z", "source_url": "https://www.kaggle.com/competitions/favorita-grocery-sales-forecasting/data", "pages": [ { "name": "rules", "content": "### One account per participant\n\nYou cannot sign up to Kaggle from multiple accounts and therefore you cannot submit from multiple accounts.\n\n### No private sharing outside teams\n\nPrivately sharing code or data outside of teams is not permitted. It's okay to share code if made available to all participants on the forums.\n\n### Team Mergers\n\nTeam mergers are allowed and can be performed by the team leader. In order to merge, the combined team must have a total submission count less than or equal to the maximum allowed as of the merge date. The maximum allowed is the number of submissions per day multiplied by the number of days the competition has been running.\n\n### Team Limits\n\nThere is no maximum team size.\n\n### Submission Limits\n\nYou may submit a maximum of 5 entries per day.\n\nYou may select up to 2 final submissions for judging.\n\n### Competition Timeline\n\nStart Date: October 19, 2017\n\nMerger Deadline: January 8, 2018\n\nEntry Deadline: January 8, 2018\n\nEnd Date: **January 15, 2018 @ 11:59 PM UTC**\n\n### COMPETITION-SPECIFIC TERMS\n\n**COMPETITION TITLE**: Corporación Favorita Grocery Sales Forecasting\n\n**COMPETITION SPONSOR**: Corporación Favorita C.A.\n\n**COMPETITION WEBSITE**: https://www.kaggle.com/c/favorita-grocery-sales-forecasting\n\n**PRIZES: $30,000**\n\nFirst Prize: $15,000\n\nSecond Prize: $10,000\n\nThird Prize: $5,000\n\n**SPECIAL LOCAL PRIZE**:\n\nTop 3 ranked individually competing* Ecuadorian residents who indicate their interest will be considered by Corporación Favorita for interviews, based on their work in the competition and additional background. \n\nIf hired, the candidates will be eligible to receive USD $5000 welcome bonus (to be paid directly by Corporación Favorita) upon their one year anniversary of employment.\n\n**Local residents who who compete in teams are not eligible for this special prize.*\n\n**WINNER LICENSE TYPE**: Non-Exclusive License outside of Ecuador; Exclusive License within Ecuador\n\n**EXTERNAL DATA**: Permitted, with guidelines as follows,\n\n* Use of publicly available external data is permitted, provided it does not pertain to Corporación Favorita nor to any entity in the same line of business as Corporación Favorita. For example, you may use pre-trained networks or natural language tools/libraries.\n\n* The source of any external data must be posted to the official competition forum prior to the First Submission Deadline.\n\nCompetitions are open to residents of the United States and worldwide, except if you are a resident of Crimea, Cuba, Iran, Syria, North Korea, Sudan, or are subject to U.S. export controls or sanctions, then you may not enter the Competition. Other local rules and regulations may apply to you, so please check your local laws to ensure that you are eligible to participate in skills-based competitions.\n\n**ENTRY IN THIS COMPETITION CONSTITUTES YOUR ACCEPTANCE OF THESE OFFICIAL COMPETITION RULES.**\nThe Competition named above is a skills-based competition to promote and further the field of data science. You must register via the Competition Website to enter. Your competition submissions (\"Submissions\") must conform to the requirements set forth on the Competition Website. Your Submissions will be scored based on the evaluation metric described on the Competition Website. Subject to compliance with the Competition Rules, Prizes described on the Competition Website, if any, will be awarded to participants with the best scores, based on the merits of the data science models submitted. See below for the complete Competition Rules.\n\n### SPECIFIC COMPETITION RULES\n\nIn addition to the provisions of the General Competition Rules below, you understand and agree to these Specific Competition Rules required by the Competition Sponsor:\n\n#### **1.\tWINNER LICENSE**\n\nPursuant to Section 10 (Winners Obligations) of the General Rules below, for this Competition, you will grant to Competition Sponsor the following licenses to your Submissions:\n\n**Exclusive License**: Within Ecuador, you will grant to Competition Sponsor and its designees an exclusive, sub-licensable, transferable, fully paid-up, royalty-free, perpetual, irrevocable right to use, reproduce, distribute, create derivative works of, publicly perform, publicly display, digitally perform, make, have made, sell, offer for sale and import your winning Submission and the source code used to generate the Submission, in any media now known or hereafter developed, for any purpose whatsoever, commercial or otherwise, without further approval by or payment to Participant.\n\n**Non-Exclusive License**: Outside of Ecuador, you will grant to Competition Sponsor and its designees a worldwide, non-exclusive, sub-licensable, transferable, fully paid-up, royalty-free, perpetual, irrevocable right to use, reproduce, distribute, create derivative works of, publicly perform, publicly display, digitally perform, make, have made, sell, offer for sale and import your winning Submission and the source code used to generate the Submission, in any media now known or hereafter developed, for any purpose whatsoever, commercial or otherwise, without further approval by or payment to Participant.\n\n#### **2.\tSPECIAL LOCAL PRIZE.** A special prize of USD $5000 (or local currency equivalent) will be awarded to the best ranked Ecuadorian resident. In order to be recognized as an Ecuadorian resident, a city within Ecuador must be selected in the contestant’s profile page, and the contestant will have to demonstrate residency to be awarded the monetary prize.\n\n### GENERAL COMPETITION RULES\n#### **1.\tBINDING AGREEMENT.** \n\nIn order to enter the Competition, you must agree to these Official Competition Rules, which incorporate by reference the provisions and content of the Competition Website and any Specific Competition Rules above (collectively, the “Rules”). Please read these Rules carefully prior to entry to ensure you understand and agree. You agree that submission of an entry in the Competition constitutes agreement to these Rules. You may not submit an entry to the Competition and are not eligible to receive the prizes described in these Rules unless you agree to these Rules. These Rules form a binding legal agreement between you and the Competition Sponsor with respect to the Competition.\n\n#### **2.\tELIGIBILITY.** \n\nA. To be eligible to enter the Competition, you must be:\n\t(i) a registered account holder at Kaggle.com; \n\t(ii) the older of 18 years old or the age of majority in your jurisdiction of residence; \n\t(iii) not a resident of Crimea, Cuba, Iran, Syria, North Korea, or Sudan; and\n\t(iiv) not a person or representative of an entity under U.S. export controls or sanctions (see https://www.treasury.gov/resource-center/sanctions/Programs/Pages/Programs.aspx).\n\nIf you are entering as a representative of a company, educational institution or other legal entity, or on behalf of your employer, these rules are binding on you, individually, and/or the entity you represent or are an employee. If you are acting within the scope of your employment, as an employee, contractor, or agent of another party, you warrant that such party has full knowledge of your actions and has consented thereto, including your potential receipt of a prize. You further warrant that your actions do not violate your employer’s or entity’s policies and procedures.   \n\nThe Competition Sponsor reserves the right to verify eligibility and to adjudicate on any dispute at any time. If you provide any false information relating to the Competition concerning your identity, residency, mailing address, telephone number, email address, ownership of right, or information required for entering the Competition, you may be immediately disqualified from the Competition.\n\nB. Unless otherwise set forth in the Specific Competition Rules above, employees, interns, contractors, officers and directors of the Competition Sponsor, Kaggle Inc., and their parent companies, subsidiaries, affiliates, and their respective directors, officers, employees, advertising and promotion agencies, representatives, and agents (“Competition Entities”) may enter and participate in the Competition, but are not eligible to win any Prizes. \n\n#### **3.\tSPONSOR AND HOSTING PLATFORM.** \n\nThe Competition is sponsored by Competition Sponsor named above. The Competition is hosted on behalf of Competition Sponsor by Kaggle Inc. (“Kaggle”). Kaggle is an independent contractor of Competition Sponsor, is not a party to this or any agreement between you and Competition Sponsor. You understand that Kaggle has no responsibility with respect to selecting the potential Competition winner(s) or awarding any Prizes. Kaggle will perform certain administrative functions relating to hosting the Competition, and you agree to abide by the provisions relating to Kaggle under these Rules. As a Kaggle.com account holder and user of the Kaggle competition platform, remember you have accepted and are subject to the Kaggle Terms of Service at < www.kaggle.com/terms > in addition to these Rules.\n\n#### **4.\tCOMPETITION PERIOD.** \n\nThe Competition will run from the Start Date and time to the End Date and time, as set forth on the Competition Website. The Competition Period and Submission deadlines are subject to change, and Competition Sponsor may introduce additional hurdle deadlines during the Competition. Any updated or additional deadlines will be publicized on the Competition Website. It is your responsibility to check the Competition Website regularly to stay informed of any deadline changes. YOU ARE RESPONSIBLE FOR DETERMINING THE CORRESPONDING TIME ZONE IN YOUR LOCATION. \n\n#### **5.\tCOMPETITION ENTRY.** \n\nNO PURCHASE NECESSARY TO ENTER OR WIN. To enter the Competition, you must register on the Competition Website during the Competition Period, and follow the instructions for developing and entering your Submission through the Competition Website. Your Submissions must be made in the manner and format, and in compliance with all other requirements, set forth on the Competition Website (the “Requirements”). Submissions must be received prior to any Submission deadlines set forth on the Competition Website.\n\nSubmissions may not use or incorporate information from hand labeling or human prediction of the validation dataset or test data records.\n\nIf the Competition is a multi-stage competition with temporally separate training data and/or leaderboard data, one or more valid Submissions **may be required** during each Competition stage in the manner described on the Competition Website in order for the Submissions to be Prize eligible.\n\nSubmissions are void if they are in whole or part illegible, incomplete, damaged, altered, counterfeit, obtained through fraud, or late. Competition Sponsor reserves the right, in its sole discretion, to disqualify any entrant who makes a Submission that does not meet the Requirements. \n\n#### **6.\tINDIVIDUALS AND TEAMS.** \n\nA. Individual Account. You may make Submissions only under one, unique Kaggle.com account. You will be disqualified if you make Submissions through more than one Kaggle account, or attempt to falsify an account to act as your proxy. You may submit up to the maximum number of Submissions per day as specified on the Competition Website. \n\nB. Teams. If permitted under the Competition Website guidelines, multiple individuals may collaborate as a team (a “Team”); however, you may join or form only one Team. Each Team member must be a single individual with a separate Kaggle account. You must register individually for the Competition before joining a Team. You must confirm your Team membership to make it official by responding to the Team notification message sent to your Kaggle account. Team membership may not exceed the Maximum Team Size set forth on the Competition Website.\n\nC. Team Merger. Teams may request to merge via the Competition Website. Team mergers may be allowed provided that: (i) the combined Team does not exceed the Maximum Team Size; (ii) the number of Submissions made by the merging Teams does not exceed the number of Submissions permissible for one Team at the date of the merger request; (iii) the merger is completed prior to the earlier of: any merger deadline or the Competition deadline; and (iv) the proposed combined Team otherwise meets all the requirements of these Rules. A merger is not official until the requesting Teams are notified of the allowed merger by Kaggle sent to the Team member’s Kaggle accounts.\n\n#### **7.\tCOMPETITION DATA.** \n\n“Competition Data” means the data or datasets available from the Competition Website for the purpose of use in the Competition, including any prototype or executable code provided on the Competition Website. \n\nA. Data Access and Use. Unless otherwise restricted under the Competition Specific Rules above, after your acceptance of these Rules, you may access and use the Competition Data for the purposes of the Competition, participation on Kaggle Website forums, academic research and education, and other non-commercial purposes.\n\nB. Data Security. You agree to use reasonable and suitable measures to prevent persons who have not formally agreed to these Rules from gaining access to the Competition Data. You agree not to transmit, duplicate, publish, redistribute or otherwise provide or make available the Data to any party not participating in the Competition. You agree to notify Kaggle immediately upon learning of any possible unauthorized transmission or unauthorized access of the Data and agree to work with Kaggle to rectify any unauthorized transmission. You agree that participation in the Competition shall not be construed as having or being granted a license (expressly, by implication, estoppel, or otherwise) under, or any right of ownership in, any of the Data.\n\nC. External Data. Unless otherwise expressly stated on the Competition Website, you may not use data other than the Competition Data to develop and test your models and Submissions. Competition Sponsor reserves the right in its sole discretion to disqualify any Participant who Competition Sponsor discovers has undertaken or attempted to undertake the use of data other than the Competition Data, or who uses the Competition Data other than as permitted by the Competition Website and these Rules.\n\n#### **8.\tSUBMISSION CODE REQUIREMENTS.**\n\nA. Code Sharing. You are permitted to share on the Kaggle competition platform only, any source or executable code developed in connection with or based upon the Competition Data, or otherwise relevant to the Competition, provided that such sharing does not violate the intellectual property rights of any third party. By so sharing, you are deemed to have licensed the shared code under any of the eligible Open Source licenses listed below.\n\nB. Code Sharing Restriction. Unless otherwise specifically permitted under the Competition Website or Competition Specific Rules above, during the Competition, you are not allowed to share on any platform other than the Kaggle competition platform, any source or executable code developed in connection with or based upon the Competition Data. This prohibition includes code sharing between separate Teams, unless a Team merger occurs, and sharing on public sites such as github. Any such code sharing is a breach of these Competition Rules and may result in disqualification.\n\nC. Use of Open Source. Unless otherwise set forth in the Specific Competition Rules above, if Open Source code is used in the model to general the Submission, then you must only use Open Source code licensed under an Open Source Initiative-approved license (see www.opensource.org>) that in no event limits commercial use of such code or model containing or depending on such code.\n\n#### **9.\tDETERMINING WINNERS:** \n\nEach Submission will be scored and ranked by the evaluation metric set forth on the Competition Website. During the Competition, the current ranking will be visible on the Competition Website’s leaderboard. The potential winner(s) are determined solely by the leaderboard ranking on the private leaderboard as set forth on the Competition Website, subject to compliance with these Rules.\n\nIn the event of a tie, the Submission that was entered first to the Competition will be the winner. In the event a potential winner is disqualified for any reason, the Submission that received the next highest score rank will be chosen as the potential winner.\n\nKaggle will notify the potential winner(s) by email. If a potential winner does not respond to the notification attempt within five (5) days from the first notification attempt, then such potential winner will be disqualified and an alternate potential winner will be selected from among all eligible entries received based on the judging criteria described herein. \n\nThe winner’s list will be publicly displayed at Kaggle.com. Determinations of Competition Sponsor are final and binding.\n\n#### **10.\tWINNERS OBLIGATIONS.**\n\nAs a condition to being awarded a Prize, a Prize winner must fulfill the following obligations:\n\n(a) deliver to the Competition Sponsor the final model’s software code as used to generate the winning Submission and associated documentation. The delivered software code must be capable of generating the winning Submission and contain a description of resources required to build and/or run the executable code successfully;\n\n(b) grant to Competition Sponsor the license to the winning Submission as set forth in the Competition Specific Rules above, and represent that you have the unrestricted right to grant that license; \n\n(c) sign and return all Prize acceptance documents as may be required by Competition Sponsor or Kaggle, including without limitation: (i) eligibility certifications; (ii) licenses, releases and other agreements required under the Rules; (iii) U.S, tax forms (such as IRS Form W-9 if U.S. resident, IRS Form W-8BEN if foreign resident, or future equivalents); and **(iv) Local License and Non-Disclosure Agreement Terms.**\n\n#### **11.\tPRIZES.** \n\nPrize(s) are as described on the Competition Website. Odds of winning any prize depends on the number of eligible Submissions received during the Competition Period and the skill of the entrants. \n\nAll Prizes are subject to Competition Sponsor’s review and verification of the entrant’s eligibility and compliance with these Rules, and the compliance of the winning Submissions with the Submissions Requirements. In the event that the Submission demonstrates non-compliance with these Competition Rules, Competition Sponsor may at its discretion take either of the following actions: (i) disqualify the Submission(s); or (ii) require the potential winner to remediate within one week after notice all issues identified in the Submission(s) (including, without limitation, the resolution of license conflicts, the fulfillment of all obligations required by software licenses, and the removal of any software that violates the software restrictions).\n\nA potential winner may decline to be nominated as a Competition winner by notifying Kaggle directly within 1 week after the end of the Competition Period, in which case the potential winner forgoes any prize or other features associated with winning the Competition. Kaggle reserves the right to disqualify a Participant who so declines its winner status.\n\nPotential winners must return all required documents within 15 days following notification, or such potential winner will be deemed to have forfeited the prize and another potential winner will be selected. Prize(s) will be awarded within approximately 30 days after receipt by Competition Sponsor of the required Prize acceptance documents. Transfer or assignment of a Prize is not allowed. \n\nYou are not eligible to receive any Prize if you do not meet the Eligibility requirements in Section 2 above.\n\nIf a Team wins a monetary Prize, the Prize money will be allocated in even shares between the eligible Team members, unless the Team unanimously opts for a different prize split and notifies Kaggle before prizes are issued.\n\n#### **12.\tTAXES.** \n\nALL TAXES IMPOSED ON PRIZES ARE THE SOLE RESPONSIBILITY OF THE WINNERS. Payments to potential winners are subject to the express requirement that they submit all documentation requested by Competition Sponsor or Kaggle for compliance with applicable state, federal, local and foreign (including provincial) tax reporting and withholding requirements. Prizes will be net of any taxes that Competition Sponsor is required by law to withhold. If a potential winner fails to provide any required documentation or comply with applicable laws, the Prize may be forfeited and Competition Sponsor may, in its sole discretion, select an alternative potential winner. Any winners who are U.S. residents will receive an IRS 1099 form in the amount of their Prize.\n\n#### **13.\tGENERAL CONDITIONS.**  \n\nAll federal, state, provincial and local laws and regulations apply. Competition Sponsor reserves the right to disqualify any entrant from the Competition if, in Competition Sponsor’s sole discretion, it reasonably believes that the entrant has attempted to undermine the legitimate operation of the Competition by cheating, deception, or other unfair playing practices or abuses, threatens or harasses any other entrants, Competition Sponsor or Kaggle.  \n\n#### **14.\tPUBLICITY.**\n\nBy accepting a Prize, you agree that Competition Sponsor, Kaggle and its agencies may use of your name and/or likeness, for advertising and promotional purposes without additional compensation, unless prohibited by law.\n\n#### **15.\tPRIVACY.**\n\nYou acknowledge and agree that Competition Sponsor and Kaggle may collect, store, share and otherwise use personally identifiable information provided during the registration process and the Competition, including, but not limited to, name, mailing address, phone number, and email address. Kaggle will use this information in accordance with its Privacy Policy , including for administering the Competition. Your information may also be transferred to countries outside the country of your residence, including the United States. Such other countries may not have privacy laws and regulations similar to those of the country of your residence. As a Kaggle.com account holder, you have the right to request access, review, rectification or deletion of any personal data held by Kaggle by logging into your account.\n\n#### **16.\tWARRANTY, INDEMNITY AND RELEASE.** \n\nYou warrant that your Submission is your own original work and, as such, you are the sole and exclusive owner and rights holder of the Submission, and you have the right to make the Submission and grant all required licenses.  You agree not to make any Submission that: (i) infringes any third party proprietary rights, intellectual property rights, industrial property rights, personal or moral rights or any other rights, including without limitation, copyright, trademark, patent, trade secret, privacy, publicity or confidentiality obligations; or (ii) otherwise violates any applicable state or federal law.\n\nTo the maximum extent permitted by law, you indemnify and agree to keep indemnified Competition Entities at all times from and against any liability, claims, demands, losses, damages, costs and expenses resulting from any act, default or omission of the entrant and/or a breach of any warranty set forth herein. To the maximum extent permitted by law, you agree to defend, indemnify and hold harmless the Competition Entities from and against any and all claims, actions, suits or proceedings, as well as any and all losses, liabilities, damages, costs and expenses (including reasonable attorneys fees) arising out of or accruing from: (a) your Submission or other material uploaded or otherwise provided by you that infringes any copyright, trademark, trade secret, trade dress, patent or other intellectual property right of any person or entity, or defames any person or violates their rights of publicity or privacy; (b) any misrepresentation made by you in connection with the Competition; (c) any non-compliance by you with these Rules; (d) claims brought by persons or entities other than the parties to these Rules arising from or related to your involvement with the Competition; and (e) your acceptance, possession, misuse or use of any Prize, or your participation in the Competition and any Competition-related activity.\n\nYou hereby release Competition Sponsor and Kaggle from any liability associated with: (a) any malfunction or other problem with the Competition Website; (b) any error in the collection, processing, or retention of any Submission; or (c) any typographical or other error in the printing, offering or announcement of any Prize or winners.\n\n####**17.\tINTERNET.** \n\nCompetition Entities are not responsible for any malfunction of the Competition Website or any late, lost, damaged, misdirected, incomplete, illegible, undeliverable, or destroyed Submissions or entry materials due to system errors, failed, incomplete or garbled computer or other telecommunication transmission malfunctions, hardware or software failures of any kind, lost or unavailable network connections, typographical or system/human errors and failures, technical malfunction(s) of any telephone network or lines, cable connections, satellite transmissions, servers or providers, or computer equipment, traffic congestion on the Internet or at the Competition Website, or any combination thereof, which may limit an entrant’s ability to participate.\n\n#### **18.\tRIGHT TO CANCEL, MODIFY OR DISQUALIFY.**\n\nIf for any reason the Competition is not capable of running as planned, including infection by computer virus, bugs, tampering, unauthorized intervention, fraud, technical failures, or any other causes which corrupt or affect the administration, security, fairness, integrity, or proper conduct of the Competition, Competition Sponsor reserves the right at its sole discretion to cancel, terminate, modify or suspend the Competition. Competition Sponsor further reserves the right to disqualify any entrant who tampers with the submission process or any other part of the Competition or Competition Website.  Any attempt by an entrant to deliberately damage any web site, including the Competition Website, or undermine the legitimate operation of the Competition is a violation of criminal and civil laws and should such an attempt be made, Competition Sponsor and Kaggle each reserves the right to seek damages from any such entrant to the fullest extent of the applicable law.\n\n#### **19.\tNOT AN OFFER OR CONTRACT OF EMPLOYMENT.**\n\nUnless otherwise specifically provided under the Competition Website, under no circumstances shall the entry of a Submission, the awarding of a Prize, or anything in these Rules be construed as an offer or contract of employment with Competition Sponsor or any of the Competition Entities. You acknowledge that you have submitted your Submission voluntarily and not in confidence or in trust. You acknowledge that no confidential, fiduciary, agency or other relationship or implied-in-fact contract now exists between you and Competition Sponsor or any of the Competition Entities, and that no such relationship is established by your entry of your Submission.\n\n#### **20.\tGOVERNING LAW.** \n\nUnless otherwise provided in the Competition Specific Rules above, all claims arising out of or relating to these Rules will be governed by California law, excluding its conflict of laws rules, and will be litigated exclusively in the Federal or State courts of Santa Clara County, California, USA. The parties consent to personal jurisdiction in those courts. If any provision of these Rules is held to be invalid or unenforceable, all remaining provisions of the Rules will remain in full force and effect.\n", "isPublished": false, "hasIsPublished": false, "postTitle": "", "hasPostTitle": false, "mimeType": "", "hasMimeType": false }, { "name": "data-description", "content": "In this competition, you will be predicting the unit sales for thousands of items sold at different Favorita stores located in Ecuador. The training data includes dates, store and item information, whether that item was being promoted, as well as the unit sales. Additional files include supplementary information that may be useful in building your models.\n\n## File Descriptions and Data Field Information\n\n### train.csv \n * Training data, which includes the target `unit_sales` by `date`, `store_nbr`, and `item_nbr` and a unique `id` to label rows.\n * The target `unit_sales` can be integer (e.g., a bag of chips) or float (e.g., 1.5 kg of cheese).\n * Negative values of `unit_sales` represent returns of that particular item.\n * The `onpromotion` column tells whether that `item_nbr` was on promotion for a specified `date` and `store_nbr`.\n * Approximately 16% of the `onpromotion` values in this file are `NaN`.\n * **NOTE:** The training data does not include rows for items that had zero `unit_sales` for a store/date combination. There is no information as to whether or not the item was in stock for the store on the date, and teams will need to decide the best way to handle that situation. Also, there are a small number of items seen in the training data that aren't seen in the test data.\n\n### test.csv\n * Test data, with the `date`, `store_nbr`, `item_nbr` combinations that are to be predicted, along with the `onpromotion` information.\n * **NOTE:** The test data has a small number of items that are not contained in the training data. Part of the exercise will be to predict a new item sales based on similar products..\n * The public / private leaderboard split is based on time. All items in the public split are also included in the private split.\n\n### sample_submission.csv\n * A sample submission file in the correct format.\n * *It is highly recommend you zip your submission file before uploading!*\n\n### stores.csv\n * Store metadata, including `city`, `state`, `type`, and `cluster`.\n * `cluster` is a grouping of similar stores.\n\n### items.csv\n * Item metadata, including `family`, `class`, and `perishable`.\n * **NOTE:** Items marked as `perishable` have a score weight of `1.25`; otherwise, the weight is `1.0`.\n\n### transactions.csv\n * The count of sales transactions for each `date`, `store_nbr` combination. Only included for the training data timeframe.\n\n### oil.csv\n * Daily oil price. Includes values during both the train *and* test data timeframe. (Ecuador is an oil-dependent country and it's economical health is highly vulnerable to shocks in oil prices.)\n\n### holidays_events.csv\n * Holidays and Events, with metadata\n * **NOTE:** Pay special attention to the `transferred` column. A holiday that is `transferred` officially falls on that calendar day, but was moved to another date by the government. A `transferred` day is more like a normal day than a holiday. To find the day that it was actually celebrated, look for the corresponding row where `type` is `Transfer`. For example, the holiday *Independencia de Guayaquil* was transferred from 2012-10-09 to 2012-10-12, which means it was celebrated on 2012-10-12. Days that are type `Bridge` are extra days that are added to a holiday (e.g., to extend the break across a long weekend). These are frequently made up by the type `Work Day` which is a day not normally scheduled for work (e.g., Saturday) that is meant to payback the Bridge.\n * `Additional` holidays are days added a regular calendar holiday, for example, as typically happens around Christmas (making Christmas Eve a holiday).\n\n## Additional Notes\n\n * Wages in the public sector are paid every two weeks on the 15 th and on the last day of the month. Supermarket sales could be affected by this.\n * A magnitude 7.8 earthquake struck Ecuador on April 16, 2016. People rallied in relief efforts donating water and other first need products which greatly affected supermarket sales for several weeks after the earthquake.", "isPublished": false, "hasIsPublished": false, "postTitle": "", "hasPostTitle": false, "mimeType": "", "hasMimeType": false }, { "name": "Description", "content": "

Brick-and-mortar grocery stores are always in a delicate dance with purchasing and sales forecasting. Predict a little over, and grocers are stuck with overstocked, perishable goods. Guess a little under, and popular items quickly sell out, leaving money on the table and customers fuming.

\n\n

The problem becomes more complex as retailers add new locations with unique needs, new products, ever transitioning seasonal tastes, and unpredictable product marketing. Corporación Favorita, a large Ecuadorian-based grocery retailer, knows this all too well. They operate hundreds of supermarkets, with over 200,000 different products on their shelves.

\n\n

Corporación Favorita has challenged the Kaggle community to build a model that more accurately forecasts product sales. They currently rely on subjective forecasting methods with very little data to back them up and very little automation to execute plans. They’re excited to see how machine learning could better ensure they please customers by having just enough of the right products at the right time.

", "isPublished": false, "hasIsPublished": false, "postTitle": "", "hasPostTitle": false, "mimeType": "", "hasMimeType": false }, { "name": "Evaluation", "content": "Submissions are evaluated on the Normalized Weighted Root Mean Squared Logarithmic Error (NWRMSLE), calculated as follows:\n\n$$ NWRMSLE = \\sqrt{ \\frac{\\sum_{i=1}^n w_i \\left( \\ln(\\hat{y}_i + 1) - \\ln(y_i +1)  \\right)^2  }{\\sum_{i=1}^n w_i}} $$\n\nwhere for row i, \\\\(\\hat{y}_i\\\\) is the predicted unit_sales of an item and \\\\(y_i\\\\) is the actual unit_sales; `n` is the total number of rows in the test set.\n\nThe weights, \\\\(w_i\\\\), can be found in the `items.csv` file (see the [Data page](https://www.kaggle.com/c/favorita-grocery-sales-forecasting/data)). Perishable items are given a weight of `1.25` where all other items are given a weight of `1.00`.\n\nThis metric is suitable when predicting values across a large range of orders of magnitudes. It avoids penalizing large differences in prediction when both the predicted and the true number are large: predicting 5 when the true value is 50 is penalized more than predicting 500 when the true value is 545.\n\n## Submission File\n\nFor each`id` in the test set, you must predict the`unit_sales`. Because the metric uses `ln(y+1)`, submissions are validated to ensure there are no negative predictions. \n\nThe file should contain a header and have the following format:\n\n id,unit_sales\n 125497040,2.5\n 125497041,0.0\n 125497042,27.9\n etc.", "isPublished": false, "hasIsPublished": false, "postTitle": "", "hasPostTitle": false, "mimeType": "", "hasMimeType": false }, { "name": "Prizes", "content": "

Leaderboard Prizes

\n

\n

Please note that prize eligibility requires that winners complete & send signed License and Non-Disclosure Terms, per local Ecuadorian law.

\n

Special Ecuadorian Local Prize

\n

The top 3 ranked individually competing* Ecuadorian residents will be considered by Corporación Favorita for interviews. If hired, the candidates will be eligible for a $5,000 welcome bonus upon their one year anniversary of employment.

\n* Local residents who who compete in teams are not eligible for this special prize.", "isPublished": false, "hasIsPublished": false, "postTitle": "", "hasPostTitle": false, "mimeType": "", "hasMimeType": false }, { "name": "Timeline", "content": "\n

All deadlines are at 11:59 PM UTC on the corresponding day unless otherwise noted. The competition organizers reserve the right to update the contest timeline if they deem it necessary.

", "isPublished": false, "hasIsPublished": false, "postTitle": "", "hasPostTitle": false, "mimeType": "", "hasMimeType": false } ] }