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📁 人工智能的教材啊
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 <div style='text-align:right;position:absolute;top:92.0%;left:72.65%;
 width:18.91%;height:3.0%'><span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";font-size:58%;mso-field-code:meta16'>38</span><span
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 <div style='position:absolute;top:3.75%;left:5.05%;width:88.76%;height:6.25%'><span
 style='font-family:黑体;mso-ascii-font-family:黑体;mso-fareast-font-family:黑体;
 font-size:133%'>4.1<span style="mso-spacerun: yes">&nbsp; </span>子句形式<span
 style="mso-spacerun: yes">&nbsp; </span>&#13;</span></div>
 <div style='position:absolute;top:11.0%;left:5.05%;width:88.76%;height:6.25%'><span
 style='font-family:黑体;mso-ascii-font-family:黑体;mso-fareast-font-family:黑体;
 font-size:133%;display:none'>&#13;</span></div>
 <div style='position:absolute;top:17.25%;left:5.05%;width:106.36%;height:5.25%'>令<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'><i>
 L </i></span>是一个一阶语言<span style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman"'>, </span>其中符号<span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'>, </span>项和原子定义如同谓词演算<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>,
 &#13;</span></div>
 <div style='position:absolute;top:22.75%;left:5.05%;width:88.76%;height:5.25%'>公式定义为子句形式<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>.
 &#13;</span></div>
 <div style='position:absolute;top:28.5%;left:5.05%;width:88.76%;height:4.75%'><i>&#13;</i></div>
 <div style='position:absolute;top:32.75%;left:5.05%;width:96.06%;height:5.75%'><span
 style='font-family:仿宋_GB2312;mso-fareast-font-family:仿宋_GB2312'>文字</span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>:<span
 style="mso-spacerun: yes">&nbsp; </span></span><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-language:ZH-CN'><i>p </i></span>或<span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'> </span><span style='font-family:
 Symbol;mso-char-type:symbol'><i>&Oslash;</i></span><span lang=EN-US style='font-family:
 "Times New Roman";mso-ascii-font-family:"Times New Roman";mso-fareast-language:
 ZH-CN'><i>p,<span style="mso-spacerun: yes">&nbsp; </span>p</i></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-language:ZH-CN'> </span>是原子句子<span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'>. </span><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-language:ZH-CN'><i>p</i></span><span lang=EN-US style='font-family:
 "Times New Roman";mso-ascii-font-family:"Times New Roman";mso-fareast-language:
 ZH-CN'> </span>为<span style='font-family:仿宋_GB2312;mso-fareast-font-family:
 仿宋_GB2312'>正文字</span><span style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman"'>, </span><span style='font-family:Symbol;mso-char-type:
 symbol'><i>&Oslash;</i></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-language:ZH-CN'><i>p </i></span>为<span
 style='font-family:仿宋_GB2312;mso-fareast-font-family:仿宋_GB2312'>负文字</span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'><i>.</i></span>&#13;</div>
 <div style='position:absolute;top:38.5%;left:5.05%;width:88.76%;height:5.25%'><span
 style='font-family:仿宋_GB2312;mso-fareast-font-family:仿宋_GB2312'>子句</span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>:<span
 style="mso-spacerun: yes">&nbsp; </span></span>一个文字的集合<span style='font-family:
 "Times New Roman";mso-ascii-font-family:"Times New Roman"'>, </span>表示它们的析取<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>.&#13;</span></div>
 <div style='position:absolute;top:44.0%;left:5.05%;width:88.76%;height:5.25%'><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-language:ZH-CN'><i>Horn </i></span><span style='font-family:仿宋_GB2312;
 mso-fareast-font-family:仿宋_GB2312'>子句</span><span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'>:<span style="mso-spacerun:
 yes">&nbsp; </span></span>包含至多一个正文字的子句<span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'>.&#13;</span></div>
 <div style='position:absolute;top:49.75%;left:5.05%;width:88.76%;height:4.75%'>&#13;</div>
 <div style='position:absolute;top:54.5%;left:5.05%;width:91.19%;height:5.25%'>下面把项<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>(</span>集<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>),
 </span>原子<span style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman"'>(</span>集<span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'>), </span>文字<span style='font-family:
 "Times New Roman";mso-ascii-font-family:"Times New Roman"'>, </span>子句<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>(</span>集<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>)</span>同称为表达式<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>.&#13;</span></div>
 <div style='position:absolute;top:60.25%;left:5.05%;width:88.76%;height:4.75%'>&#13;</div>
 <div style='position:absolute;top:65.25%;left:5.05%;width:88.76%;height:5.25%'><span
 style='font-family:仿宋_GB2312;mso-fareast-font-family:仿宋_GB2312'>合取范式</span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>
 (</span><span lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman";mso-fareast-language:ZH-CN'><i>CNF</i></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-language:ZH-CN'>):<span style="mso-spacerun: yes">&nbsp; </span></span>文字的析取式的合取<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>.&#13;</span></div>
 <div style='position:absolute;top:71.0%;left:5.05%;width:88.76%;height:4.75%'>&#13;</div>
 <div style='position:absolute;top:75.5%;left:5.05%;width:100.56%;height:5.75%'>设<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>
 </span><span style='font-family:Symbol;mso-char-type:symbol'><i>j</i></span><span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'><i>
 </i></span>是一个谓词演算的句子<span style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman"'>, </span><span style='font-family:Symbol;mso-char-type:
 symbol'><i>C</i></span><span style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman"'> </span>是一个子句集<span style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman"'>. </span>则对任一个&#13;</div>
 <div style='position:absolute;top:80.75%;left:5.05%;width:88.76%;height:5.75%'>一阶解释<span
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman"'>
 </span><span lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:
 "Times New Roman";mso-fareast-language:ZH-CN'><i>M,<span style="mso-spacerun:
 yes">&nbsp; </span></i></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-language:ZH-CN'><i>M |= </i></span><span
 lang=EN-US style='font-family:Symbol;mso-fareast-language:ZH-CN;mso-char-type:
 symbol'><i>j</i></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-language:ZH-CN'><span
 style="mso-spacerun: yes">&nbsp; </span>iff<span style="mso-spacerun:
 yes">&nbsp; </span></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-language:ZH-CN'><i>M |= </i></span><span
 lang=EN-US style='font-family:Symbol;mso-fareast-language:ZH-CN;mso-char-type:
 symbol'><i>C</i></span><span lang=EN-US style='font-family:"Times New Roman";
 mso-ascii-font-family:"Times New Roman";mso-fareast-language:ZH-CN'>.</span></div>
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