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{{DISPLAYTITLE:F-成绩和准确度}}在Eyewire,您将获得基于您的F分数的准确率评级。F分数是决定准确度占准确率和召回这两种统计方法。或者更简单地说,F分数是HQ根据添加多的、缺失的模块来决定你的准确率。传统F分数的公式为: [[File:F_score_calculation.png|center]] 在计算最终的F分数时,要提前计算好玩家个人的准确率和召回。方块由玩家搭建完后,程序识别并输出4种判断的结果:真阳性、假阳性、真阴性、假阳性。真阳性(tp)是你正确添加了遗失的片段;假阳性(fp)是你错误添加了不该有的片段;真阴性(tn)是你移除原来模型中错误的片段;假阴性(fn)是你遗漏了需要添加的片段。你可以在下图看到假阳性与假阴性的区别。 [[File:NewFScoreEyeWire.png|150px|left]] 左边是玩家提交的一个方块。 这个示例中,绿色和红色是玩家已经提交的增添了的片段,紫色是玩家遗漏的部分片段。 图中红色片段是假阳性,紫色片段是假阴性。 玩家错误地添加了红色段,而不是区添加紫色片段。 绿色片段正确。 再次说明,准确度是单位体积里正确片段的个数。比如某玩家的准确度是0.9221,那92%片段正确添加,8%片段错误添加。正确添加的片段也就是真阳性,记为 tp ;相应有 fp 。则如下准确度公式:[[File:Precisionformula.png|center]] 召回率指相同体积里正确添加片段占总共需要添加片段的比例。比如某玩家的召回率是0.9409,那就遗漏了6%的片段。计算时,正确添加片段相当于真阳性结果,记为 tp ;遗落的片段相当于假阴性结果 ,记为 fn 。则有如下召回率公式:[[File:Recallformula.png|center]] 现在把玩家的准确率和找回率代入最上方的公式,就能得出玩家的F分数。也可通过求准确率和找回率的调和平均值,将调和平均值视为最后的整体准确率。 ===F分数准吗?=== 不少玩家问我们如何判断正确与否?只要没有[[GrimReaper |死神]]的修正,那就是正确。[[The Consensus|约定术语]]中已经清楚定义了[[GrimReaper |死神]]的修正。但也可能出现例外,约定术语中出现某些小错误。也就意味着,F分数不能彻底地反映玩家的准确率。然而,我们依然相信上述计算方法足以引导玩家了。
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