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What is Amazon Mechanical Turk?

In 1769, Hungarian nobleman Wolfgang von Kempelen astonished Europe by building a mechanical chess-playing automaton that defeated nearly every opponent it faced. A life-sized wooden mannequin, adorned with a fur-trimmed robe and a turban, Kempelen's "Turk" was seated behind a cabinet and toured Europe, confounding such brilliant challengers equally Benjamin Franklin and Napoleon Bonaparte. To persuade skeptical audiences, Kempelen would slide open the cabinet's doors to reveal the intricate set of gears, cogs and springs that powered his invention. He convinced them that he had built a machine that made decisions using artificial intelligence. What they did not know was the secret backside the Mechanical Turk: a chess master cleverly concealed inside.

Today, we build complex software applications based on the things computers exercise well, such as storing and retrieving large amounts of information or apace performing calculations. Withal, humans notwithstanding significantly outperform the well-nigh powerful computers at completing such simple tasks as identifying objects in photographs – something children can practice even earlier they larn to speak.

When nosotros recollect of interfaces betwixt human beings and computers, we usually assume that the homo is the one requesting that a task exist completed, and the calculator is completing the job and providing the results. What if this procedure was reversed and a computer programme could ask a human beingness to perform a task and return the results? What if it could coordinate many human beings to perform a task?

Amazon Mechanical Turk (MTurk) provides a service for service requesters (hereafter "Requesters") to integrate Artificial Artificial Intelligence directly into their applications past making requests of humans. Requesters can apply the MTurk web user interface or web services API to submit tasks to the MTurk spider web site, corroborate completed tasks, and incorporate the answers into their applications. When using the web services API, the transaction looks very much like any remote process call – the application sends the request, and the service returns the results. In reality, a network of human Workers (hereafter "Workers") fuels this Artificial Artificial Intelligence by coming to the web site, searching for and completing tasks, and receiving reward for their piece of work.

All Requesters need to do is write normal code. The pseudo code beneath illustrates how uncomplicated this tin can exist.

                          read(photo);   photoContainsHuman = callMechanicalTurk(photo);    if (photoContainsHuman == True) {       acceptPhoto();   } else {       rejectPhoto();   }                      

What problem does Amazon Mechanical Turk solve?

• For software developers, the Amazon Mechanical Turk (MTurk) web service solves the problem of edifice applications that until now have non worked well without human intelligence. Humans are much more effective at solving some types of problems, like finding specific objects in pictures, evaluating beauty, or translating text. The idea of the MTurk web service is to requite developers a programmable interface to a network of humans to solve these kinds of problems and incorporate this human intelligence into their applications.
• For businesses and entrepreneurs who desire tasks completed, the MTurk service solves the problem of accessing a vast network of human intelligence with the efficiencies and price-effectiveness of computers. Oft people practice not motility forward with sure projects because the cost to found a network of skilled Workers to do the work outweighs the value of completing it. By turning the fixed costs into variable costs that scale with their needs, the MTurk spider web service eliminates this barrier and allows projects to be completed that before were not economical.
• For people who want to earn money in their spare time, the MTurk spider web site solves the problem of finding work you lot can do wherever and whenever y'all desire using the skills yous already possess.

How do Requesters ensure their tasks are completed in a loftier-quality manner?

Requesters have several options for ensuring their HITs (Human Intelligence Tasks) are completed in a high-quality way.

• Requesters have the opportunity to approve completed HITs earlier having to pay for them. In that location are many ways Requesters tin can approve HITs, ranging from auto-approving them sight unseen, to automobile-blessing them when they receive two answers to the same HIT that friction match, to manually approving some or all completed HITs.
• Requesters tin specify that people who work on their tasks must beginning complete a qualification examination, thus giving Requesters the opportunity to vet the skill level of the people working on their HITs beforehand. Over fourth dimension people who practice work on the Amazon Mechanical Turk web site volition accept statistics associated with them based on how accurately they have completed other HITs. These statistics, such equally the percentage of HITs they've submitted that have been approved, permit Requesters to specify further that just Workers with certain qualifications can work on their HITs.

Who completes the tasks on Amazon Mechanical Turk and how exercise they complete them?

• Virtually anyone can consummate tasks on the Amazon Mechanical Turk (MTurk) web site using the skills they already have and according to their own schedule. The only requirement to complete tasks and collect payment from Requesters is a computing device connected to the Internet and to exist at least eighteen-years-old.
• Earning money through the MTurk web site is every bit easy as searching for HITs on the site, accepting those HITs, completing them, and collecting the reward once the Striking is approved by the Requester.
• To make money by completing tasks using the MTurk web site, visit worker.mturk.com.

What kind of piece of work tin can be done using Amazon Mechanical Turk?

• Anyone tin can submit about any chore that can be completed using a computing device connected to the Cyberspace.
• Amazon came up with the idea for Amazon Mechanical Turk to help solve specific internal information processing bug that required human judgment and intelligence. We apace realized that nosotros had invented something unique and incredibly useful, and decided to expose information technology as an external spider web service so that Requesters can create their own innovative applications that apply human intelligence as a cadre component.

How do Workers collect money for the tasks they complete?

When the Requester approves a submitted Hitting, Amazon Mechanical Turk automatically displays Worker earnings on their Dashboard and Earnings pages. Earnings are transferred to their virtual The states bank account or to their Amazon.com souvenir carte du jour remainder on a regular schedule.

Tin whatsoever concern use Amazon Mechanical Turk or practice they need to empathize how to apply spider web services and APIs?

Businesses can create and publish HITs on Amazon Mechanical Turk using the Requester web user interface (UI), the API, or the command line interface (CLI). Visit the Requester User Interface Guide to learn more than almost the UI or the developer getting started guide to learn about the API or CLI.

Tin can Requesters outside of the United states use Amazon Mechanical Turk to get tasks completed?

Nosotros currently have registrations from the following countries:

Americas

Barbados, Chile, Canada, French Guiana, Guadeloupe, Martinique, Puerto Rico, United states, The states Pocket-sized Islands, U.s. Virgin Islands

Africa

Botswana, Mayotte, Réunion, Due south Africa

Asia and Pacific

Australia, French Polynesia, French Southern Territories, Hong Kong, State of israel, Japan, New Caledonia, New Zealand, Qatar, Singapore, South korea, Taiwan

Europe

Austria, Belgium, Denmark, Republic of estonia, Republic of finland, France, Germany, Iceland, Ireland, Italy, Republic of lithuania, Luxembourg, Republic of malta, Netherlands, Norway, Poland, Portugal, Romania, Slovenia, Spain, Sweden, Switzerland, United Kingdom

We're working hard to brand Amazon Mechanical Turk (MTurk) bachelor for more Requesters. Want to advise a country? Permit us know.

Where can I view and edit my name, email address, password, and payment methods

You lot can view and edit your account information past accessing your My Business relationship page. Delight note that your MTurk Requester business relationship is associated with your Amazon.com business relationship and so when you edit your personal settings, they volition exist inverse on the corresponding Amazon.com account.

Where tin I view and edit my contact address data?

Y'all can view and edit your contact address on Amazon.com.

Payments & Fees

How exercise I purchase prepaid HITs on Amazon Mechanical Turk?

Follow these steps to purchase prepaid HITs:

1. From your Amazon Mechanical Turk account, go to My Account -> Purchase Prepaid HITs.
2. Enter in the amount you lot would similar to buy.
3. Select the credit or debit card on file or enter in new credit or debit card information.
4. Ostend your purchase.

Note: As a Us Requester, you may be prompted to institute a verified Amazon Payments account if you plan to make a buy above certain amounts. You tin create a verified Amazon Payments business relationship at whatsoever fourth dimension here.

How are the fees calculated?

You tin review Amazon Mechanical Turk pricing here.

What rounding rules are applied when calculating fees?

Subsequently the fee is calculated, we circular one-half up amounts greater than $0.01 – we circular downward if the fractional amount is less than half a penny, and round up otherwise. For example, $0.104 is rounded to $0.x, $0.105 is rounded to $0.11, and $0.108 is rounded to $0.xi.

How are Workers paid?

Workers will exist paid and Amazon Mechanical Turk (MTurk) fees will be charged when you approve submitted work. If you reject the work, the Worker is not paid and y'all are not charged the MTurk fees. MTurk Prepaid HITs are subject to Participation Agreement. You lot tin can review MTurk pricing here.

Can I employ any Amazon Payments account to purchase prepaid HITs?

No. You tin can purchase prepaid HITs using your credit or debit bill of fare on the Purchase Prepaid HITs page.

How do I receive a refund for prepaid HITs?

If you lot would similar a refund of your prepaid Striking purchase, delight contact customer support.

Refunds are processed to the original payment method used to prepay the business relationship. You can find this information on the My Account page.

• When requesting a refund, provide the refund corporeality and the payment method used when y'all contact customer support.
• If there is Liability on the account, we are non able to process a refund. The amount held in Liability is visible on the My Account page.
• Refunds are issued for the total amount of the available balance on whatever given transaction.

How do I receive a receipt for prepaid HITs?

You lot can contact mturk.com/contact-u.s. to take a copy of your receipt emailed to you lot. In social club to process your request, delight provide the transaction time period to be included in the receipt. Note: If you accept signed up for AWS Billing, invoicing is automatic on a monthly ground and likewise available for download from the Billing Panel.

Y'all can download your transaction history for your records here.

Who are Amazon Mechanical Turk Masters?

Amazon Mechanical Turk (MTurk) has built engineering which analyzes Worker performance, identifies high performing Workers, and monitors their performance over fourth dimension. Workers who have demonstrated excellence beyond a broad range of HITs are awarded the Masters Qualification. Masters must continue to laissez passer our statistical monitoring to maintain the MTurk Masters Qualification.

Do you collect revenue enhancement reporting information from non-United states of america based Workers?

Aye, all not-U.South. based Workers are required to provide their tax data through a tax data interview before doing any piece of work on Mechanical Turk just as U.Due south. Workers are required to exercise. The revenue enhancement information interview collects the U.Southward. tax status (for U.S. person or non-U.S. person), the name, and the permanent residence address of the individual that volition report the income on an income tax return.

What are funds held for liability?

Funds held for liability is the sum of your assignment liability and fee liability.

Funds held for consignment liability is an estimated corporeality representing how much you would take to pay Workers if Workers submitted results for every assignment you are requesting, and you canonical all of the results. We hold these funds because we need to ensure that Workers are paid promptly for their piece of work on Amazon Mechanical Turk (MTurk). Your assignment liability will increase as you create new HITs and will decrease as you approve or pass up assignments. If you have no outstanding assignments, you will have zero assignment liability.

Funds held for fee liability is an estimated corporeality representing how much you would have to pay MTurk if Workers submitted results for every assignment you are requesting, and you approved all of the results. Your fee liability will increase as you create new HITs and volition decrease equally you approve or decline assignments. If you take no outstanding assignments, you will have nada fee liability.

AWS Billing & Payments

Why should MTurk customers adopt AWS Billing?

1. Past linking your MTurk Requester account ID to an AWS business relationship ID and opting-in to AWS Billing, your MTurk fees will exist included on your AWS bill. Your AWS bill includes MTurk fee details and your AWS business relationship ID which you may need for bookkeeping purposes. Your transaction history is nonetheless bachelor for download from the MTurk Requester site.
2. If you want to manage billing for multiple MTurk accounts through a unmarried account, you lot can sign up for an account with AWS Organizations which will enable you to link other AWS accounts and their associated MTurk Requester accounts under an AWS Organizational account to consolidate billing.
3. With AWS billing, invoicing is sent via electronic mail on a monthly ground and also available for download from the Billing Console on need. If you need to configure invoicing without a credit carte du jour or if you need boosted support visit mturk.com/contact-united states of america.

How can I enable AWS Billing?

You lot need to link your AWS account to your MTurk account to use this pick. You can then enable the AWS billing option from your account settings page on MTurk. One time your AWS account is linked, and you lot have opted in to AWS Billing you are all gear up to create HITs on MTurk. You will pay as you go results which will be billed via your anniversary AWS bill. AWS Billing is a ane way door.

1. Create an AWS Business relationship: To create an AWS Account, provide your contact information, payment information, verify your business relationship and select a support plan to continue. You will receive an email from AWS once you lot have completed registration and your business relationship is gear up to utilize. Create an AWS business relationship.
2. Link Your AWS Account with Your MTurk Requester Account: On the programmer folio, link your MTurk Requester Account with your AWS Account. Delight click Link your AWS Account and sign-in with your AWS Root User credentials. One time your accounts are linked, you will be redirected back to this page.
3. Opt In for AWS Billing: Once you have linked your AWS account to your MTurk Requester business relationship y'all will see the option to opt in for AWS Billing on your MTurk account page.

How exercise I ready an AWS Organizational account?

1. Go to Amazon Web Services home page and click Sign In to the Panel.
2. To link the two accounts you lot first need to choose the AWS business relationship that all charges volition be billed to and create an System.
3. To add additional MTurk Requester accounts nether your AWS Organizational account, those Requester accounts must exist linked to an AWS account and opted-in to AWS billing.
4. Then invite other accounts equally member accounts to join your AWS Organisation business relationship.
5. Once the accounts are linked all MTurk fees will exist billed through the AWS Organizational business relationship.

I have open up HITs and accept enabled AWS Billing, once I approve these HITs will they be billed to my AWS bill?

No, HITs that were created prior to opting in for AWS Billing once approved volition exist paid from your MTurk prepaid account.

Can I opt-in for postpaid billing without an AWS business relationship?

No, you need to link your AWS account to your MTurk business relationship to use this feature. You lot tin can easily setup an AWS account here if you practice not already take one.

How do I approve, reject, or bonus work submitted by Workers in the AWS billing model?

Similar to today you approve, reject, and bonus submitted HITs by Workers on the Requester website. Whatever unapproved submitted HITs volition exist automatically approved afterwards 30 days.

Can I use a promotional credit or my EDP towards my AWS bill?

No, currently MTurk is an ineligible AWS service and you lot cannot use a promotional credit or your EDP on Amazon Mechanical Turk services.

I'm an existing MTurk Requester, tin can I continue to use my current MTurk payment method?

You can continue to pre-fund your MTurk account to create HITs for now.

I'grand an existing MTurk Requester, instead of a refund can I utilise my existing MTurk rest to my AWS neb?

We are unable to utilise your prepaid funds to your AWS bill. Once whatsoever open up prepaid HITs take expired, all remaining funds in your prepaid account will be refunded to you via your original payment method.

I'm an MTurk Worker, will my payments get affected with this modify?

No, this change volition not affect your payments. Y'all will continue to receive your payments one time your work gets approved.

How will the MTurk usage testify upwardly on my AWS beak?

All approved assignments volition appear on your AWS bill under Mechanical Turk.

Pattern, Publish, and Manage HITs

How practise I create a HIT?

The Amazon Mechanical Turk (MTurk) Requester website allows Requesters to admission the MTurk Worker customs. The Requester UI Guide explains how to design, publish, and manage your HITs on the Requester website.

What practice I need to know about creating surveys on MTurk?

Check out our blog mail service to larn more about getting started with Surveys and the importance of selecting Qualifications. You tin can too create Custom Qualifications to include or exclude Workers across multiple survey batches or for longitudinal inquiry. Y'all may too want to consider deploying linked surveys.

What happens when I pass up piece of work?

When you decline an assignment, the Worker who performed the assignment is non paid, and y'all are not charged the standard Amazon Mechanical Turk fee for the HIT. The rejection may affect your reputation as a Requester and the approval rate of the Worker who submitted the results. Please note that y'all may not reject an assignment without good cause and rejections can be reversed if you determine that a mistake was fabricated.

How long does Amazon Mechanical Turk keep my HITs?

MTurk will remove HITs and corresponding Consignment data from your account later 120 days. If you require access to HIT and Assignment data for longer than 120 days, we recommend you lot download the Striking results and store them locally.

Are at that place restrictions or prohibited uses of Amazon Mechanical Turk?

You lot may not use Amazon Mechanical Turk for illegal or objectionable activities. Please refer to the policy page for examples. For example, Requesters are not allowed to collect personally identifiable information from Workers.

How do I prevent Workers who have worked on my HIT (e.grand. Surveys) one time from taking part in subsequent HITs?

This can be accomplished past using qualifications. Requesters tin create a Qualification Type or utilise an existing Qualification Type to assign it to the Workers who have completed the HIT (e.g. survey) once. When creating the next Striking, Requesters tin specify that only Workers who accept not been granted the Qualification Type can work on the Hit. This tin be done through the UI and the API.

How do I use Premium Qualifications?

Requesters can specify criteria at the time of creating the project. The available attributes tin can be specified in the "Worker Requirements" department of the Requester Website.

Tin I employ Premium Qualifications for any kind of Striking?

Yeah, using the Create Projection characteristic on the Requester Website, Requester customers tin can utilize Premium Qualifications for any kind of HIT that has 10 or more Assignments, including Surveys. The Sentiment and Categorization Project types practise not support Qualifications, nor does the Create HITs Individually feature.

What is the cost of using Premium Qualifications?

The use of each of the Premium Qualifications incurs an additional fee per approved assignment based on the specific Premium Qualification chosen. For more item, run into our Pricing page.

What if I need to create and manage Custom Qualifications for my Hit?

Custom Qualifications tin be designed by Requesters to select or exclude specific worker attributes. You tin can likewise create Custom Qualifications to include or exclude Workers across multiple survey batches or for longitudinal research. For more information, meet our documentation on Managing Qualification Types.

How practice I retry publishing a Batch with a failed payment?

Yous can retry publishing by following these three steps:

1. If your batch had an input data file, download the input data file on the failed Batch Details page. You will need this file for Step 3.
2. Go to: Create -> New Batch with an Existing Project, and click Publish Batch on the same Project you previously used.
3. If your batch had an input information file, upload the input file from Step i.
4. Become through the remaining steps of publishing a batch.

If you continue to feel problems, please review your recent purchases on the My Account page.

What is the maximum number of HITs in a batch?

The maximum number of HITs in a batch is 250,000 (or 500 in our Sandbox surroundings).

In order to publish more than the maximum number of HITs at a time, you may interruption your input file into multiple smaller files containing less than or equal to the maximum number of HITs. If your use example requires you lot to publish more than the maximum number of HITs in a unmarried batch, please contact the states.

Can I create and manage HITs programmatically?

Amazon Mechanical Turk (MTurk) provides Requester facing APIs as well as developer tool kits (SDKs). To go started, visit our developer Getting Started Guide.

Why exercise I need to accept an AWS account to use MTurk APIs?

In order to telephone call the MTurk APIs, Requesters must accept registered for AWS accounts and retrieved their IAM credentials. This is because MTurk uses the AWS account to identify and allow access for developers using the MTurk APIs. Nosotros're non using AWS to track MTurk API usage thus MTurk will not announced in AWS bills for Requesters.

Can I use MTurk to publish tasks containing personal or sensitive data?

No. As a public crowd market, MTurk is not designed for sharing or publishing HITs containing personal or sensitive information. It is your responsibility every bit a Requester to make up one's mind whether your HIT content contains whatever personal or sensitive data. For more than information see our Adequate Employ Policy.

Can I mail service a survey on MTurk that asks Workers for basic demographic information?

Yes, and then long as your survey does non derive whatever personally identifiable information from Workers. For example, you may inquire Workers for their occupation, relationship status, etc., only you may not ask Workers for personally identifiable information, such as their full name, email address, phone number, or equivalent in any Hit including survey HITs. Surveys should but be posted for legitimate academic or market research purposes.

Are at that place restrictions on what I can use Worker IDs for?

Unique Worker IDs are fabricated available by MTurk to facilitate your apply of the MTurk service merely and for no other purpose. For example, you lot may use Worker IDs to distinguish between Workers who complete your HITs, and manage Workers such as tracking how many HITs a particular Worker has completed. You may not use Worker IDs to attempt to derive the real identity of any Worker, or otherwise publicly mail service or share them.

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Source: https://www.mturk.com/help

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