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第75章 深度学习(2 / 2)

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尧尧抱着路熙凡的脖子,扭头看着周围想笑又忍着不笑的众人,嘴角往下一耷拉,眼瞅着又要哭了。

路熙凡笑着,轻轻地拍了拍尧尧的肉肉的后背,“好了宝贝,没事的。”

安抚了好一会儿,尧尧这才转哭为喜。路熙凡折起最后一根手指,“刚刚傀灵的动作就是第三种控制方式,完全自主,也就是说傀灵的所有行动都是它的自主所为。”

盛长风三人睁大了眼睛,扭头看着五行傀灵,而傀灵也几乎在同一时间转头看向他们三人。

“自主行动?!这傀灵也太智能了吧。”盛长风不可置信地说道。

“是啊,这比那些智能机器人要厉害多了。”徐海阳同样惊讶不已。

“智能机器人?”路熙凡想了想,“也有些共通之处吧。徐总,你爱好下围棋,可知道最近围棋界去年最火的是什么?”

徐海阳略作思索,道:“人机大战?”

盛长风等人诧异不解地看着徐海阳。

徐海阳解释道:“DeepMind公司设计了一个人工智能围棋程序,名字叫做AlphaGo,阿尔法狗。这个围棋程序可是了不得,前年最初版本的时候曾经和新罗九段棋手对决,以4比1的比分获胜;去年年初在互联网棋类网站上注册了账号,与华夏、新罗和东瀛数十位高手连番对战,连续60局不败;去年中旬更是火的一塌糊涂,五月在华夏围棋峰会上与世界排名第一的华夏国手对决,最后以三比零的大比分获胜。”

“这么厉害?!”盛长风等人诧异道。

“围棋落子概率的计算量极为巨大,因此他被认为是人类胜过计算机的最后一个阵地,没想到现在这个阵地居然被攻陷了。”徐海阳叹道,“围棋横纵有十九路,如果排除吃子等因素,仅按照落子的次序来计算的话,第一颗棋子有19乘19,361种可能,落第二颗子又有360种可能,第三颗子有359种可能,以此类推全部棋子下到棋盘上就有361*360*359*358......*3*2*1种可能,也就是361的阶乘,‘361!’种可能,结果是768位数。若要穷举头三步棋的落子位置,就有种选择。”

看着不明觉厉目瞪口呆的盛长风和柳青,徐海阳继续解释道:“第二种计算方法是按照落子位置来计算,棋盘上的361个位置每一个位置都只有三种情况,黑子白子和空白,所以一局棋共有3的361次方种可能,这更是一个天文数字,远超出了计算机的快速计算能力了。”

路熙凡笑着说道,“既然超出了计算机的计算能力,那为什么阿尔法狗会轻而易举地战胜了人类高手呢?”

徐海阳尴尬笑道,“其实我也并不是十分懂得,只是看新闻听说用到了什么人工智能算法吧。”

路熙凡点头,“阿尔法狗依靠的是深度学习算法,主要是依靠监督学习,通过记录3000万部人类棋谱,对六段以上职业棋手的落棋规律进行模仿,利用蒙特卡洛算法搜索哪个位置同时具备高价值和高概率,而后通过高层神经网络组成的棋局评估器来决定最优的落子位置。”

“但是......”路熙凡语音一转,拉长了声音,众人此时全都睁大了眼睛,竖起耳朵好奇地听着。

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