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Because the auction had to go through EBay, EBay can actually add value to the reputation system by validating that the discussed transaction did appear to occur. The second assertion is "EBay says that Buyer B and Seller S engaged in transaction T".
The first assertion is, in effect, "Buyer B says that Seller S did a good Sale for transaction T". But doing all of this takes quite a bit of effort so in reality EBay adds real value because in its reputation system there are actually two assertions being made, not one. People set up fake accounts, generate a lot of purchase activity with them, use them to run up their reputation scores and then use their inflated reputations to steal money. The short answer to this question is - this kind of fraud actually occurs on EBay. Since the average person evaluating seller S doesn't know who the buyers are anyway how would they know real from fake buyer feedback? Of course the first thing black hats (read: bad people) will do is create a ton of these assertions. But reputation on the Internet tends to be a little fancier than this.įor example, let's pretend that we create a new reputation system where when someone wins an EBay auction and purchases an item the buyer will post a publicly available statement that they have digitally signed stating that they bought an item from the seller S and how they rated the seller. When S&P gives a credit rating to some company they are saying "S&P says Company Y has credit rating Z". A classic example would be Standards & Poors (S&P). In the simplest sense reputation is an assertion by one party about some other party. Imagine if a website with a comment section could collect reputation data about a user from every site they have posted at and use that to figure out how much moderation, if any, they should apply to that person's posts? Why should someone have to start building their reputation from scratch on every website they go to? It's out reputation data, it's about us or its generated by us and it's bloody time we set it free! What is reputation? Maybe it has a great reputation on Yahoo Shopping but a lousy reputation on EBay? Maybe it has an outstanding reputation on MySimon but hasn't really established itself yet on MSN Shopping where you happened to find it? Shouldn't we be able to find all the reputation data without having to be held hostage to some reputation intermediary? The same applies to reputations about people. Once the correct answer has been submitted, you can click JetBrains Academy to return to your Study plan or click Next to open the next stage of your project.Imagine if you could find a random store on the Internet and get reputation data about it regardless of where it had previously sold goods. Once you've finished writing your code, click Check to verify your solution. The window on the right contains the project (or problem) description and examples. The window in the middle is a place for you to write your code. The window on the left shows you the directories and file structure of your project.
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Allow IDE to download all necessary files before working on your project. Pay attention to the processes running notification in the bottom right corner of your screen. Click Continue to start loading your project in IDE. Make sure that IDE and plugin are correctly installed and working.Īfter that, you will see a popup window with a description of your chosen project. On the Project Stage (or problem) page choose an IDE tab and click Solve in IDE.
To start working, you need to open your GoLand, log in to your JetBrains Academy account by going to Settings/Preferences > Tools > Education > JetBrains Academy, and choose the project from the Go track. If you have any issues or questions regarding the installation process, please refer to this official guide. (Your IDE and plugin will check for updates automatically every time they run, but you can check and configure updates manually at Help > Check for Updates > Configure ). We strongly recommend always using the latest version of GoLand and the EduTools plugin available. You will need the EduTools plugin to open our problems and projects inside an IDE.
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In the search box type EduTools and install the plugin. Second, go to Settings/Preferences > Plugins > Marketplace.
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In the License Activation window, you can either activate your IDE (in case you have a key) or simply click Evaluate for free > Evaluate > Continue to start your free trial.
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Check out this article if you want to get a free license key and be able to activate GoLand.Īfter that, start GoLand.
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First, you will need to download GoLand, a 30-day free trial version from the official JetBrains website.