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Tree of savior-The introduction of the Bot Report Function

Tree of savior-The introduction of the Bot Report Function

Posted time: Apr 20,2016

Many of gamers are showing your concern on bots. Bots are a big problem to the developers as well because they interrupt game play and negatively affect the game's economy. Gamers can buy TOS silver on igxe.com


The bot report function they added to the game can effectively ban bots if used properly, but they also have to consider the possibility of its abuse. Throughout time, we've been doing research on how they can minimize this abuse. We're going to explain our report feature in close detail and tell gamers what to keep in mind when reporting bots.


First, not all reports hold the same validity. Each account has a value called "Report Influence Index." This value cannot be seen by players, but it increases whenever said account correctly reports a bot.

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If a user is reported repeatedly by others, that user is very likely to be a bot. In addition, if the reporter is an influential individual, their report is most likely valid so they can set a priority on which account to ban first. This is where the Report Influence Index (RII) comes in. In terms of numbers, a player with 10 RII has the same impact as 10 different players with 1 RII each when reporting suspicious users.


Accounts with high report counts will then move to the next step of verification. Some have suggested using CAPTCHA, but that too, will be breached eventually. It puts needless restrictions on the players, so they are not considering its use. Instead, what they chose to use is a server-side classifier based on Machine Learning (ML) technique.


The classifier uses the comprehensive activity log of a reported account to determine if it's a bot in percentages. They will not be revealing the classifier's exact mechanism, as it can be manipulated by violators to bypass the system. They train our classifier by constantly inputting new data. The fact that they can maintain its accuracy is its advantage, because we're going to manually determine which factors should be considered to identify bots. The classifier's accuracy depends on how they determine the behavior criteria, and they examine over 20 basic criteria. The machine showed 99% accuracy on our Korean server when they set the machine to output fewer false positives. If they set strictness value low, the classifier will detect more bot with lower accuracy and vice versa.


An account that is deemed to be a bot becomes subject to restriction after a GM's additional confirmation. If that account gets banned, then all the users who reported that account gain one RII point.


However, should the reported account be declared clean, the reporter's RII value will be negatively affected. The RII is not a simple difference between the numbers of accurate and inaccurate report counts, and the algorithm they use to determine the final RII value can be changed in the future. Therefore, gamers should not report bots if you're unsure of their offense. The system can backfire on gamers if you're not careful.


For example, a player going afk while leaving a heavy object on the attack key has to be handled differently from regular bots. The classifier can deem the afk player innocent from looking at the honest play records, so afk players should not be reported using the report function as that will work against your RII.


If they're not absolutely sure the reported account is a bot, then it will not be banned and the reporter's RII will remain unchanged.


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