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Nigh Amazon Mechanical Turk

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 information technology faced. A life-sized wooden mannequin, adorned with a fur-trimmed robe and a turban, Kempelen's "Turk" was seated backside a cabinet and toured Europe, confounding such vivid challengers every bit Benjamin Franklin and Napoleon Bonaparte. To persuade skeptical audiences, Kempelen would slide open up the cabinet's doors to reveal the intricate set of gears, cogs and springs that powered his invention. He convinced them that he had congenital a motorcar that made decisions using bogus intelligence. What they did not know was the secret behind the Mechanical Turk: a chess master cleverly curtained inside.

Today, nosotros build circuitous software applications based on the things computers do well, such as storing and retrieving large amounts of information or quickly performing calculations. Withal, humans notwithstanding significantly outperform the most powerful computers at completing such simple tasks equally identifying objects in photographs – something children can exercise even earlier they learn to speak.

When we recollect of interfaces betwixt man beings and computers, nosotros normally assume that the human being is the i requesting that a task exist completed, and the computer is completing the task and providing the results. What if this procedure was reversed and a computer program could ask a human being to perform a task and return the results? What if it could coordinate many human beings to perform a chore?

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

All Requesters need to practise is write normal code. The pseudo code below illustrates how simple this tin can exist.

                          read(photo);   photoContainsHuman = callMechanicalTurk(photograph);    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 trouble of building applications that until at present have not worked well without homo intelligence. Humans are much more constructive 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 being intelligence into their applications.
• For businesses and entrepreneurs who want tasks completed, the MTurk service solves the problem of accessing a vast network of human intelligence with the efficiencies and price-effectiveness of computers. Oftentimes people do not movement forward with certain projects because the cost to establish a network of skilled Workers to do the piece of work outweighs the value of completing it. By turning the stock-still costs into variable costs that calibration with their needs, the MTurk web service eliminates this barrier and allows projects to exist completed that before were not economic.
• For people who want to earn coin in their spare fourth dimension, the MTurk web site solves the trouble of finding piece of work yous can do wherever and whenever you desire using the skills you 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 manner.

• Requesters have the opportunity to corroborate completed HITs before having to pay for them. At that place are many ways Requesters can approve HITs, ranging from automobile-approving them sight unseen, to auto-approving them when they receive two answers to the same Striking that match, to manually blessing some or all completed HITs.
• Requesters can specify that people who work on their tasks must first complete a qualification exam, thus giving Requesters the opportunity to vet the skill level of the people working on their HITs beforehand. Over time people who do work on the Amazon Mechanical Turk web site volition have statistics associated with them based on how accurately they have completed other HITs. These statistics, such every bit the percentage of HITs they've submitted that have been approved, allow Requesters to specify further that only Workers with certain qualifications can piece of work on their HITs.

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

• Virtually anyone tin can complete tasks on the Amazon Mechanical Turk (MTurk) spider web site using the skills they already have and according to their own schedule. The only requirement to consummate tasks and collect payment from Requesters is a computing device continued to the Net and to be at least 18-years-former.
• Earning money through the MTurk spider web site is as like shooting fish in a barrel as searching for HITs on the site, accepting those HITs, completing them, and collecting the reward once the HIT is canonical by the Requester.
• To make money by completing tasks using the MTurk web site, visit worker.mturk.com.

What kind of work can exist done using Amazon Mechanical Turk?

• Anyone tin submit almost any task that tin can be completed using a computing device connected to the Internet.
• Amazon came upwardly with the thought for Amazon Mechanical Turk to help solve specific internal data processing issues that required man judgment and intelligence. We quickly realized that we had invented something unique and incredibly useful, and decided to betrayal it equally an external web service and so that Requesters tin can create their own innovative applications that use human being intelligence as a core component.

How do Workers collect money for the tasks they complete?

When the Requester approves a submitted HIT, Amazon Mechanical Turk automatically displays Worker earnings on their Dashboard and Earnings pages. Earnings are transferred to their virtual US depository financial institution account or to their Amazon.com gift card balance on a regular schedule.

Can any business use Amazon Mechanical Turk or exercise they demand to understand how to use web services and APIs?

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

Can Requesters exterior of the US use Amazon Mechanical Turk to go tasks completed?

Nosotros currently accept registrations from the following countries:

Americas

Barbados, Chile, Canada, French Guiana, Guadeloupe, Martinique, Puerto Rico, United states of america, Us Pocket-size Islands, U.s.a. Virgin Islands

Africa

Botswana, Mayotte, Réunion, Southward Africa

Asia and Pacific

Australia, French Polynesia, French southern territories, Hong Kong, Israel, Japan, New Caledonia, New Zealand, Qatar, Singapore, S Korea, Taiwan

Europe

Austria, Belgium, Kingdom of denmark, Estonia, Republic of finland, French republic, Germany, Iceland, Ireland, Italian republic, Lithuania, Luxembourg, Republic of malta, Netherlands, Norway, Poland, Portugal, Romania, Slovenia, Spain, Sweden, Switzerland, U.k.

We're working hard to make Amazon Mechanical Turk (MTurk) available for more Requesters. Want to suggest a country? Let us know.

Where tin can I view and edit my proper name, email address, countersign, and payment methods

Yous can view and edit your account data by accessing your My Business relationship page. Delight note that your MTurk Requester account is associated with your Amazon.com business relationship so when you edit your personal settings, they will be changed on the corresponding Amazon.com business relationship.

Where tin I view and edit my contact address information?

You lot tin can view and edit your contact address on Amazon.com.

Payments & Fees

How do 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 Business relationship -> Purchase Prepaid HITs.
2. Enter in the corporeality you would like to buy.
3. Select the credit or debit card on file or enter in new credit or debit carte du jour data.
4. Confirm your buy.

Annotation: As a United states of america Requester, you may exist prompted to establish a verified Amazon Payments account if you programme to make a purchase in a higher place certain amounts. Y'all tin can create a verified Amazon Payments account at any time hither.

How are the fees calculated?

You can review Amazon Mechanical Turk pricing here.

What rounding rules are applied when computing fees?

Subsequently the fee is calculated, we circular half up amounts greater than $0.01 – nosotros circular down if the fractional amount is less than half a penny, and round up otherwise. For example, $0.104 is rounded to $0.10, $0.105 is rounded to $0.xi, and $0.108 is rounded to $0.11.

How are Workers paid?

Workers will be paid and Amazon Mechanical Turk (MTurk) fees volition be charged when y'all approve submitted work. If you turn down the work, the Worker is not paid and you are not charged the MTurk fees. MTurk Prepaid HITs are subject field to Participation Understanding. You tin review MTurk pricing here.

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

No. You lot can purchase prepaid HITs using your credit or debit card on the Purchase Prepaid HITs page.

How do I receive a refund for prepaid HITs?

If you would similar a refund of your prepaid HIT purchase, please contact client support.

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

• When requesting a refund, provide the refund amount and the payment method used when you contact client support.
• If there is Liability on the account, we are not able to procedure a refund. The amount held in Liability is visible on the My Business relationship folio.
• Refunds are issued for the full amount of the available balance on any given transaction.

How do I receive a receipt for prepaid HITs?

You can contact mturk.com/contact-us to accept a re-create of your receipt emailed to you. In order to process your request, please provide the transaction time period to be included in the receipt. Note: If you have signed upward for AWS Billing, invoicing is automated on a monthly basis and also available for download from the Billing Console.

You can download your transaction history for your records here.

Who are Amazon Mechanical Turk Masters?

Amazon Mechanical Turk (MTurk) has built technology which analyzes Worker performance, identifies loftier performing Workers, and monitors their performance over time. Workers who have demonstrated excellence across a wide range of HITs are awarded the Masters Qualification. Masters must continue to pass our statistical monitoring to maintain the MTurk Masters Qualification.

Exercise you collect taxation reporting data from non-US based Workers?

Yes, all not-U.S. based Workers are required to provide their revenue enhancement information through a tax information interview before doing any piece of work on Mechanical Turk just as U.Due south. Workers are required to do. The tax data interview collects the U.S. tax status (for U.Due south. person or non-U.Due south. person), the proper noun, 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 amount representing how much you lot would have to pay Workers if Workers submitted results for every assignment you are requesting, and you canonical all of the results. Nosotros concur these funds because we demand to ensure that Workers are paid promptly for their work on Amazon Mechanical Turk (MTurk). Your assignment liability volition increase as you create new HITs and will decrease every bit you approve or decline assignments. If you have no outstanding assignments, y'all will have cypher assignment liability.

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

AWS Billing & Payments

Why should MTurk customers adopt AWS Billing?

1. By linking your MTurk Requester account ID to an AWS business relationship ID and opting-in to AWS Billing, your MTurk fees will be included on your AWS bill. Your AWS neb includes MTurk fee details and your AWS business relationship ID which you may need for accounting purposes. Your transaction history is yet available for download from the MTurk Requester site.
2. If y'all want to manage billing for multiple MTurk accounts through a single business relationship, you tin sign up for an business relationship 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 email on a monthly ground and also bachelor for download from the Billing Console on demand. If you lot need to configure invoicing without a credit bill of fare or if y'all need additional back up visit mturk.com/contact-united states of america.

How tin can I enable AWS Billing?

Y'all need to link your AWS business relationship to your MTurk account to use this option. You can then enable the AWS billing option from your account settings page on MTurk. Once your AWS business relationship is linked, and you have opted in to AWS Billing you lot are all prepare to create HITs on MTurk. Y'all volition pay as you become results which will exist billed via your anniversary AWS bill. AWS Billing is a one way door.

1. Create an AWS Account: To create an AWS Account, provide your contact information, payment information, verify your account and select a support programme to continue. You will receive an east-post from AWS once y'all have completed registration and your account is ready to employ. Create an AWS account.
2. Link Your AWS Account with Your MTurk Requester Account: On the developer folio, link your MTurk Requester Account with your AWS Account. Please click Link your AWS Business relationship and sign-in with your AWS Root User credentials. Once your accounts are linked, you will be redirected back to this page.
3. Opt In for AWS Billing: Once y'all have linked your AWS account to your MTurk Requester account yous will see the option to opt in for AWS Billing on your MTurk account page.

How practise I fix up an AWS Organizational account?

1. Go to Amazon Web Services domicile page and click Sign In to the Console.
2. To link the two accounts you lot kickoff need to choose the AWS account that all charges volition exist billed to and create an Organisation.
3. To add together additional MTurk Requester accounts under your AWS Organizational business relationship, those Requester accounts must be linked to an AWS account and opted-in to AWS billing.
4. And so invite other accounts as member accounts to join your AWS Organization account.
5. One time the accounts are linked all MTurk fees will exist billed through the AWS Organizational account.

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

No, HITs that were created prior to opting in for AWS Billing once approved will be paid from your MTurk prepaid business relationship.

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

No, you demand to link your AWS business relationship to your MTurk business relationship to apply this feature. You can easily setup an AWS account here if you practice not already have ane.

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

Like to today yous corroborate, decline, and bonus submitted HITs by Workers on the Requester website. Any unapproved submitted HITs volition be automatically approved later on 30 days.

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

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

I'g an existing MTurk Requester, 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'm an existing MTurk Requester, instead of a refund can I utilise my existing MTurk residuum to my AWS pecker?

We are unable to employ your prepaid funds to your AWS nib. Once any open prepaid HITs have expired, all remaining funds in your prepaid business relationship will be refunded to you lot via your original payment method.

I'grand an MTurk Worker, will my payments get affected with this alter?

No, this change volition not touch on your payments. You will continue to receive your payments once your work gets approved.

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

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

Design, Publish, and Manage HITs

How exercise I create a HIT?

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

What do I demand to know virtually 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 can also create Custom Qualifications to include or exclude Workers across multiple survey batches or for longitudinal research. You lot may as well want to consider deploying linked surveys.

What happens when I refuse work?

When you pass up an assignment, the Worker who performed the assignment is not paid, and you are not charged the standard Amazon Mechanical Turk fee for the Striking. The rejection may affect your reputation as a Requester and the approval rate of the Worker who submitted the results. Delight note that you may not reject an assignment without adept cause and rejections tin be reversed if yous determine that a mistake was made.

How long does Amazon Mechanical Turk keep my HITs?

MTurk volition remove HITs and corresponding Assignment data from your account after 120 days. If you require access to HIT and Assignment data for longer than 120 days, nosotros recommend you download the HIT results and store them locally.

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

You 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 exercise I foreclose Workers who take worked on my Striking (e.g. Surveys) once from taking part in subsequent HITs?

This tin be accomplished by using qualifications. Requesters can create a Qualification Blazon or utilize an existing Qualification Type to assign information technology to the Workers who take completed the Hitting (eastward.m. survey) once. When creating the next HIT, Requesters tin specify that only Workers who have not been granted the Qualification Type can work on the HIT. This can be done through the UI and the API.

How practice I utilise Premium Qualifications?

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

Can I use Premium Qualifications for any kind of HIT?

Yes, using the Create Project feature on the Requester Website, Requester customers can use Premium Qualifications for any kind of Hit that has ten or more than Assignments, including Surveys. The Sentiment and Categorization Project types do not support Qualifications, nor does the Create HITs Individually feature.

What is the toll 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 detail, meet our Pricing page.

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

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

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

You 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 Footstep 3.
2. Get to: Create -> New Batch with an Existing Project, and click Publish Batch on the same Projection you previously used.
3. If your batch had an input data file, upload the input file from Footstep ane.
4. Become through the remaining steps of publishing a batch.

If yous continue to feel issues, delight review your recent purchases on the My Business relationship 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 environs).

In order to publish more than the maximum number of HITs at a time, you may break your input file into multiple smaller files containing less than or equal to the maximum number of HITs. If your utilize example requires y'all to publish more than than the maximum number of HITs in a single batch, please contact u.s..

Can I create and manage HITs programmatically?

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

Why do I need to have an AWS business relationship to utilise MTurk APIs?

In order to call the MTurk APIs, Requesters must have registered for AWS accounts and retrieved their IAM credentials. This is because MTurk uses the AWS account to identify and allow admission for developers using the MTurk APIs. Nosotros're not using AWS to runway MTurk API usage thus MTurk will not appear in AWS bills for Requesters.

Tin I utilize MTurk to publish tasks containing personal or sensitive information?

No. As a public crowd marketplace, MTurk is not designed for sharing or publishing HITs containing personal or sensitive data. Information technology is your responsibility every bit a Requester to determine whether your HIT content contains whatsoever personal or sensitive data. For more data see our Adequate Use Policy.

Can I post a survey on MTurk that asks Workers for bones demographic data?

Aye, and so long as your survey does non derive any personally identifiable information from Workers. For example, you lot may ask Workers for their occupation, relationship condition, etc., but y'all may not inquire Workers for personally identifiable information, such as their total proper name, e-mail address, phone number, or equivalent in any HIT including survey HITs. Surveys should but exist posted for legitimate academic or marketplace research purposes.

Are there restrictions on what I tin can apply Worker IDs for?

Unique Worker IDs are made bachelor by MTurk to facilitate your use of the MTurk service only and for no other purpose. For case, you may use Worker IDs to distinguish between Workers who complete your HITs, and manage Workers such every bit tracking how many HITs a particular Worker has completed. You may not apply Worker IDs to endeavour to derive the real identity of whatever Worker, or otherwise publicly post or share them.

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

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