锘??xml version="1.0" encoding="utf-8" standalone="yes"?>国产亚洲精品久久久久久,裸体一区二区三区,亚洲人成在线观看网站高清http://m.shnenglu.com/billhsu/category/7691.htmlzh-cnThu, 23 Jun 2011 13:22:13 GMTThu, 23 Jun 2011 13:22:13 GMT60楠ㄩ鍔ㄧ敾涓殑鍙嶅悜鍔ㄥ姏瀛?/title><link>http://m.shnenglu.com/billhsu/archive/2010/08/26/124852.html</link><dc:creator>Bill Hsu</dc:creator><author>Bill Hsu</author><pubDate>Thu, 26 Aug 2010 09:29:00 GMT</pubDate><guid>http://m.shnenglu.com/billhsu/archive/2010/08/26/124852.html</guid><wfw:comment>http://m.shnenglu.com/billhsu/comments/124852.html</wfw:comment><comments>http://m.shnenglu.com/billhsu/archive/2010/08/26/124852.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.shnenglu.com/billhsu/comments/commentRss/124852.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/billhsu/services/trackbacks/124852.html</trackback:ping><description><![CDATA[<span id="hvzpftn" class="Apple-style-span" style="border-collapse: separate; color: #000000; font-family: Simsun; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; font-size: medium;">IK鍦ㄩ楠煎姩鐢婚噷甯稿父鑳界湅鍒幫紝浣滅敤灝辨槸鏍規嵁瀛愰楠肩殑鏂逛綅鎺ㄧ畻鍑哄畠鐨勯偅浜涚埗楠ㄩ鏂逛綅銆傚彲鏄竴鐩撮兘鏄煡閬撴湁閭d箞鍥炰簨錛屼絾鏄張涓嶅お鐭ラ亾鍏蜂綋鏄庝箞瀹炵幇鐨勩?br />鍦╩ulti-crash.com涓婄湅鍒頒竴綃?a target="_blank" ><span style="font-style: italic;">楠ㄩ鍔ㄧ敾鍙嶅悜鍔ㄥ姏瀛?IK)鐨勫疄鐜?nbsp; </span></a>錛屽唴瀹瑰啓鐨勫緢鏄撴噦銆?br />榪欐槸鍩轟簬CCD(</span>Cyclic Coordinate Descent<span id="hvzpftn" class="Apple-style-span" style="border-collapse: separate; color: #000000; font-family: Simsun; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; font-size: medium;">)綆楁硶鐨勩傝繕鏈夌闆呭彲姣旂煩闃電殑綆楁硶錛屼笉榪囪繖縐嶇畻娉曟垜榪樹笉澶竻妤氾紝甯屾湜楂樻墜鎸囨暀鍟娿?br />涓嬮潰璁茶CCD錛屽厛鐪嬭繖寮犲浘銆?br /><img style="width: 540px; height: 214px;" src="http://m.shnenglu.com/images/cppblog_com/billhsu/ccd.gif" border="0" alt="" /><br />娉ㄦ剰鍥句腑鐨勭孩綰垮拰緇跨嚎錛岀孩綰挎槸褰撳墠楠ㄩ涓庣洰鏍囬楠肩殑榪炵嚎錛岀豢綰挎槸鐩爣楠ㄩ涓庢渶緇堜綅緗殑榪炵嚎銆?br />浠庡瓙楠ㄩ鍒扮埗楠ㄩ鐨勯『搴忚凱浠h綆楋紝鏃嬭漿綰㈢嚎鍒扮豢綰褲傝繖鏍峰榪唬鍑犳灝變細寰楀埌杈冨ソ鐨勭粨鏋溿?br /><br />瑕佹敞鎰忕殑鏄渶瑕佸楠ㄩ鐨勬棆杞寖鍥村姞浠ラ檺鍒訛紝鍥犱負浜轟綋鐨勫叧鑺備笉鏄互鍙互浠繪剰鏂瑰紡鏃嬭漿鐨勩?br /><img src="http://m.shnenglu.com/images/cppblog_com/billhsu/ccd3.JPG" border="0" alt="" /><br />[渚嬪鍥句腑钃濊壊閮ㄥ垎涓哄彲浠ユ棆杞殑鑼冨洿]<br /><br /><span style="font-style: italic;"></span></span><img src ="http://m.shnenglu.com/billhsu/aggbug/124852.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/billhsu/" target="_blank">Bill Hsu</a> 2010-08-26 17:29 <a href="http://m.shnenglu.com/billhsu/archive/2010/08/26/124852.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鍩轟簬shader鐨勯楠艱挋鐨綆?/title><link>http://m.shnenglu.com/billhsu/archive/2010/04/01/111326.html</link><dc:creator>Bill Hsu</dc:creator><author>Bill Hsu</author><pubDate>Thu, 01 Apr 2010 14:10:00 GMT</pubDate><guid>http://m.shnenglu.com/billhsu/archive/2010/04/01/111326.html</guid><wfw:comment>http://m.shnenglu.com/billhsu/comments/111326.html</wfw:comment><comments>http://m.shnenglu.com/billhsu/archive/2010/04/01/111326.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.shnenglu.com/billhsu/comments/commentRss/111326.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/billhsu/services/trackbacks/111326.html</trackback:ping><description><![CDATA[     鎽樿: 鎴戠殑鍙よ懀鏄懼崱寰堟搷铔嬶紝濂界绔殑shader錛屼紶楠ㄩ鐭╅樀榪涘幓錛岀‖鏄病鍙嶅簲銆傘?<br>瀵誨瑙呰錛屾壘鍒頒簡 NVIDIA SDK 鐨別xample錛岀粓浜庤В鍐充簡銆?<br>闅鵑亾鎴戠殑鏄懼崱涓嶆敮鎸丅LENDINDICES鍜孊LENDWEIGHT? <br>鎶夿LENDINDICES鍜孊LENDWEIGHT鐢═EXCOORD[n]琛ㄧず鎵嶆甯搞傘?<br>涓嶈搴熻瘽錛岀洿鎺ヤ笂浠g爜銆?nbsp; <a href='http://m.shnenglu.com/billhsu/archive/2010/04/01/111326.html'>闃呰鍏ㄦ枃</a><img src ="http://m.shnenglu.com/billhsu/aggbug/111326.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/billhsu/" target="_blank">Bill Hsu</a> 2010-04-01 22:10 <a href="http://m.shnenglu.com/billhsu/archive/2010/04/01/111326.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>GPU姘撮潰妯℃嫙http://m.shnenglu.com/billhsu/archive/2010/03/23/110376.htmlBill HsuBill HsuTue, 23 Mar 2010 12:59:00 GMThttp://m.shnenglu.com/billhsu/archive/2010/03/23/110376.htmlhttp://m.shnenglu.com/billhsu/comments/110376.htmlhttp://m.shnenglu.com/billhsu/archive/2010/03/23/110376.html#Feedback0http://m.shnenglu.com/billhsu/comments/commentRss/110376.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/110376.html

鏁堟灉姣旇緝綆鍗曪紝鍙槸妯℃嫙浜嗕笅姘撮潰鐨勫弽灝勬晥鏋溿傛姌灝勪笌Fresnel緋繪暟娌℃湁鑰冭檻銆?br />
姘撮潰妯℃嫙澶ц嚧闇瑕佸垎榪欎箞鍑犳錛?br />1.鍓鎺夋按闈互涓嬬殑欏剁偣[gpu閲岀殑clipplane瑕佹敞鎰忚漿鎹㈠埌Clip Space]錛?br />灝嗘憚鍍忔満鏀懼埌鍚屽師鎽勫儚鏈哄叧浜庢按闈㈠縐扮殑浣嶇疆錛屾瘮濡傚師鏉ユ憚鍍忔満鍦?x,y,z)錛?br />姝ゆ椂灝辮鎶婃憚鍍忔満鏀懼湪(x,-y,z)錛寀p鍚戦噺涔熻璁劇疆鎴愬悜涓嬬殑銆?br />鍐嶆妸鍦烘櫙娓叉煋鍒癛ender Target鐨勭汗鐞嗕笂(鎴戠敤鐨勭汗鐞嗗ぇ灝忔槸256*256)錛屼笉鐭ラ亾涓轟粈涔圧ender Target鐨勭汗鐞嗗ぇ灝忎笉鑳借秴榪囩獥鍙eぇ灝忥紝瓚呰繃鐨勮瘽娓叉煋浼氬嚭閿欙紝鐭ラ亾鐨勫ぇ澶у憡璇夋垜涓涓嬪搱銆?br />
浜庢槸錛屽氨寰楀埌浜嗚繖鏍蜂竴涓汗鐞嗭細


2.灝嗕笂闈㈠緱鍒扮殑綰圭悊涓庢按闈㈢殑欏剁偣瀵瑰簲.
鎶奦ertex Shader涓箻榪囧彉鎹㈢煩闃靛悗鐨勫潗鏍囦紶鍒癙ixel Shader,
鍦≒S涓綆?br />
聽聽 聽聽聽聽 float2 clipspace = input.Coord.xy / input.Coord.w;
聽聽 聽聽聽聽 clipspace.x=((clipspace.x * 0.5f) + 0.5f);
聽聽 聽聽聽聽 clipspace.y = ((clipspace.y * -0.5f) + 0.5f);
聽聽 聽聽聽聽 clipspace.x=1-clipspace.x;
鏃㈠彲浠ヨ姘撮潰欏剁偣涓庣汗鐞嗗搴旓紝鐒跺悗鍐嶆兂鍔炴硶鎶婄汗鐞嗗潗鏍囨壈涔辨潵妯℃嫙姘撮潰娉㈠姩銆?br />
3.鍐嶆覆鏌撲竴嬈″満鏅氨鍙互浜嗐?br />
澶у涔熷彲浠ュ弬鑰冧笅Azure鐨勬按闈㈡覆鏌撴簮浠g爜錛?a temp_href=" http://www.azure.com.cn/article.asp?id=186" href="%20http://www.azure.com.cn/article.asp?id=186">
http://www.azure.com.cn/article.asp?id=186


Bill Hsu 2010-03-23 20:59 鍙戣〃璇勮
]]>
鍙紪紼嬬閬撲笅鐨勫壀瑁佸鉤闈?/title><link>http://m.shnenglu.com/billhsu/archive/2010/01/20/106088.html</link><dc:creator>Bill Hsu</dc:creator><author>Bill Hsu</author><pubDate>Wed, 20 Jan 2010 14:00:00 GMT</pubDate><guid>http://m.shnenglu.com/billhsu/archive/2010/01/20/106088.html</guid><wfw:comment>http://m.shnenglu.com/billhsu/comments/106088.html</wfw:comment><comments>http://m.shnenglu.com/billhsu/archive/2010/01/20/106088.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://m.shnenglu.com/billhsu/comments/commentRss/106088.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/billhsu/services/trackbacks/106088.html</trackback:ping><description><![CDATA[ <p class="MsoNormal"> <span>鍓騫抽潰</span> <span>(Clip Plane)</span> <span>鍦ㄥ浘褰㈠棰嗗煙鏈夌潃閲嶈鐨勪綔鐢紝姣斿姘撮潰妯℃嫙涓紝娓叉煋鎶樺皠綰圭悊鏃訛紝鎴戜滑灝卞繀欏誨皢姘撮潰浠ヤ笂鐨勯《鐐歸氳繃鍓騫抽潰鍓鎺夈?/span> </p> <p class="MsoNormal"> <span>鍦ㄨ繃鍘葷殑鍥哄畾娓叉煋綆¢亾鏃朵唬錛屽壀瑁佸鉤闈㈢殑瀹炵幇杈冧負綆鍗曪紝姣斿鍦?/span> <span>DirectX 9</span> <span>涓紝鍙互鍏堣瀹氬壀瑁佸鉤闈㈠湪涓栫晫鍧愭爣緋諱笅鐨勬柟紼?/span> <span>(ax+by+cz+d=0)</span> <span>錛屽啀璋冪敤</span> <span>SetClipPlane(DWORD Index,CONST float * pPlane)</span> <span>榪欎釜</span> <span>API</span> <span>鍑芥暟灝卞彲浠ヤ簡銆?/span> </p> <p class="MsoNormal"> <span>聽</span> </p> <p class="MsoNormal"> <span>闄勪笂渚嬪瓙紼嬪簭錛?/span> </p> <p class="MsoNormal" style="background: none repeat scroll 0% 0% rgb(238, 238, 238); text-align: left; -moz-background-inline-policy: continuous;" align="left"> <span style="font-size: 10pt; color: black;">vPosition=D3DXVECTOR3(0,0,0);</span> <span style="font-size: 10pt; color: green;">//</span> <span style="font-size: 10pt; color: green;">騫抽潰涓婁竴涓偣<span><br /></span></span> <span style="font-size: 10pt; color: black;">vNormal=D3DXVECTOR3(0,1,0);</span> <span style="font-size: 10pt; color: green;">//</span> <span style="font-size: 10pt; color: green;">娉曞悜閲?span><br /></span></span> <span style="font-size: 10pt; color: black;">D3DXPlaneFromPointNormal(聽&clipplane,聽&vPosition,聽&vNormal聽);</span> <span style="font-size: 10pt; color: green;">//</span> <span style="font-size: 10pt; color: green;">鐢熸垚鍓騫抽潰<span><br /></span></span> <span style="font-size: 10pt; color: black;"> <br /> m_pDevice()->SetClipPlane(聽0,聽(</span> <span style="font-size: 10pt; color: blue;">float</span> <span style="font-size: 10pt; color: black;">*)clipplane);聽</span> </p> <p class="MsoNormal"> <span>聽</span> </p> <p class="MsoNormal"> <span>鐒惰岋紝鍦ㄧ幇鍦ㄧ殑鍙紪紼嬬閬?/span> <span>(programmable pipeline)</span> <span>涓嬶紝璁劇疆鐨勫壀瑁佸鉤闈細琚湪鍓鍧愭爣緋諱笅澶勭悊錛岃屼笉鏄湪涓栫晫鍧愭爣緋諱笅銆?/span> </p> 瑙e喅榪欎釜闂鐨勬柟娉曟湁錛?br /><br /> 1錛壜?緇欒鍓鐨勯《鐐瑰仛鏍囪錛屽湪Pixel Shader涓妸瀹冨壀瑁佹帀銆?br /><br /> 2錛壜?浣跨敤榪戞枩騫抽潰瑁佸壀錛圤blique Near-Plane Clipping錛夛紝鍗充慨鏀規姇褰辯煩闃碉紝灝嗚鍓鐨勯《鐐規斁鍦ㄨ鎴綋涔嬪錛屼粠鑰岄伩鍏嶄簡璇ラ《鐐圭殑緇樺埗銆?br /><br /> 3錛壜?淇敼騫抽潰鏂圭▼錛屼嬌涔嬩粠涓栫晫鍧愭爣緋昏漿鎹㈠埌鍓鍧愭爣緋匯?span><br /><br /><br /> 涓婅堪鏂規硶涓紝絎竴縐嶅拰絎簩縐嶆晥鐜囧茍涓嶉珮錛氬湪</span><span>Pixel Shader</span><span>涓壀瑁佹病鏈夊噺灝戜換浣曚笉蹇呰鐨勯《鐐瑰鐞嗭紝鑰岃綆楄繎鏂滃鉤闈㈣鍓煩闃佃緝涓虹箒鐞愩傛墍浠ワ紝鏂規硶涓夋槸鏈浣抽夋嫨銆?/span><p class="MsoNormal"><span>聽</span><span>瑕佸皢涓涓鉤闈粠涓栫晫鍧愭爣緋昏漿鎹㈠埌鍓鍧愭爣緋伙紝蹇呴』姹傚嚭榪欎釜鍙樻崲鐭╅樀銆?/span></p><p class="MsoNormal"><span>璁懼鉤闈㈡柟紼?/span><span>ax+by+cz+d=0</span><span>錛岀敤涓涓?/span><span>4</span><span>緇村悜閲忔潵</span><span>n</span><span>琛ㄧず</span><span>(a,b,c,d)</span><span>錛岃騫抽潰涓婃湁涓偣</span><span>p:(x,y,z,1)</span><span>銆傛牴鎹鉤闈㈡柟紼嬬殑瀹氫箟錛屾湁錛?/span></p><p class="MsoNormal"><span><br /></span></p><p class="MsoNormal"><strong>n</strong><sup>T</sup><strong>p</strong> = ax + by + cz + d = 0</p><p class="MsoNormal"></p><p class="MsoNormal"><span>璁劇煩闃?/span><span>R</span><span>鍙互璁╃偣</span><span>P</span><span>浠庝笘鐣屽潗鏍囩郴杞崲鍒板壀瑁佸潗鏍囩郴錛岀煩闃?/span><span>Q</span><span>鍙互璁╁鉤闈?/span><span>n</span><span>瀹炵幇鍚屾牱鐨勫彉鎹€傞偅涔堬紝鏈夛細</span></p><p class="MsoNormal" style="text-align: center;" align="center"></p><div align="left"><strong>p</strong>'= <strong>R</strong><strong>p</strong></div><div align="left"><strong>n'</strong>= <strong>Q</strong><strong>n</strong></div><p class="MsoNormal"><span>鍏朵腑</span><span>p'</span><span>銆?/span><span>n'</span><span>鍒嗗埆鏄漿鎹㈠悗鐨勭偣涓庡鉤闈€?/span></p><br /><div align="left"><strong>n</strong><span>'</span><sup>T</sup><strong>p'</strong>= 0</div><div align="left">(<strong>Q</strong><strong>n</strong>)<sup>T</sup> (<strong>R</strong><strong>p</strong>) = 0 <br /><strong>n</strong><sup>T</sup><strong>Q</strong><sup>T</sup><strong>R</strong><strong>p</strong> = 0<br /><br /><br /><span>濡傛灉錛?/span><strong>Q</strong><sup>T</sup><strong>R</strong> = <strong>I</strong></div><br /><p class="MsoNormal"><span>閭d箞錛?/span></p><p class="MsoNormal"><strong>n</strong><sup>T</sup><strong>Q</strong><sup>T</sup><strong>R</strong><strong>p</strong> = <strong>n</strong><sup>T</sup><strong>I</strong><strong>p</strong> = <strong>n</strong><sup>T</sup><strong>p</strong> = 0</p><p class="MsoNormal"><span>浜庢槸錛?/span></p><div align="left"><strong>Q</strong><sup>T</sup> = <strong>R</strong><sup>-1</sup><strong><br /> Q</strong> = (<strong>R</strong><sup>-1</sup>)<sup>T</sup></div><br /><p class="MsoNormal"><span>鍦?/span><span>DirectX 3D</span><span>涓紝灝嗕竴涓偣浠庝笘鐣屽潗鏍囩郴杞崲鍒板壀瑁佸潗鏍囩郴錛屾墍鐢ㄧ殑鐭╅樀涓鴻瀵熺煩闃典笌鎶曞獎鐭╅樀鐨勪箻縐紝鍗籌細</span></p><p class="MsoNormal" style="background: none repeat scroll 0% 0% rgb(238, 238, 238); -moz-background-inline-policy: continuous;"><span style="font-size: 10pt; color: black;">D3DXMATRIX聽聽TranMatrix聽=聽matView*matProj;</span></p><p class="MsoNormal"><span style="font-size: 9pt;">(TranMatrix</span><span style="font-size: 9pt;">涓烘墍姹傜殑鍙樻崲鐭╅樀錛?span>matView</span>鍜?span>matProj</span>鍒嗗埆涓?/span><span>瑙傚療鐭╅樀涓庢姇褰辯煩闃?/span><span>)</span></p><p class="MsoNormal"><span>聽</span></p><p class="MsoNormal"><span>闄勪笂鍦?/span><span>D3D</span><span>涓彉鎹㈢殑瀹屾暣浠g爜錛?/span></p><p class="MsoNormal" style="background: none repeat scroll 0% 0% rgb(238, 238, 238); text-align: left; -moz-background-inline-policy: continuous;" align="left"><span style="font-size: 10pt; color: black;">D3DXPLANE聽tempPlane聽=聽clipplane;<br /> D3DXPlaneNormalize(&tempPlane,聽&tempPlane);<br /><br /> D3DXMATRIX聽聽TranMatrix聽=聽matView*matProj;<br /> D3DXMatrixInverse(&TranMatrix,聽NULL,聽&TranMatrix);<br /> D3DXMatrixTranspose(&TranMatrix,聽&TranMatrix);<br /> D3DXPlaneTransform(&tempPlane,聽&tempPlane,聽&TranMatrix);</span></p><p class="MsoNormal" style="background: none repeat scroll 0% 0% rgb(238, 238, 238); text-align: left; -moz-background-inline-policy: continuous;" align="left"></p><p class="MsoNormal"></p><p class="MsoNormal"><span>鍙傝冭祫鏂欙細</span></p><p class="MsoNormal"><span>1.Back Face Culling Notes ,Jordan Smith (University of California, Berkeley)<br /></span></p><p class="MsoNormal"><span>http://www.cs.berkeley.edu/~ug/slide/pipeline/assignments/backfacecull.shtml</span>聽</p><p class="MsoNormal">2.GameDev Forum</p><p class="MsoNormal">http://www.gamedev.net/community/forums/topic.asp?topic_id=402381</p><p class="MsoNormal">3.Oblique Near-Plane Clipping with Orthographic Camera ,Aras</p><p class="MsoNormal">http://aras-p.info/texts/obliqueortho.html</p><img src ="http://m.shnenglu.com/billhsu/aggbug/106088.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/billhsu/" target="_blank">Bill Hsu</a> 2010-01-20 22:00 <a href="http://m.shnenglu.com/billhsu/archive/2010/01/20/106088.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鐭╅樀姹傞嗕唬鐮?/title><link>http://m.shnenglu.com/billhsu/archive/2009/12/11/103010.html</link><dc:creator>Bill Hsu</dc:creator><author>Bill Hsu</author><pubDate>Fri, 11 Dec 2009 14:23:00 GMT</pubDate><guid>http://m.shnenglu.com/billhsu/archive/2009/12/11/103010.html</guid><wfw:comment>http://m.shnenglu.com/billhsu/comments/103010.html</wfw:comment><comments>http://m.shnenglu.com/billhsu/archive/2009/12/11/103010.html#Feedback</comments><slash:comments>7</slash:comments><wfw:commentRss>http://m.shnenglu.com/billhsu/comments/commentRss/103010.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/billhsu/services/trackbacks/103010.html</trackback:ping><description><![CDATA[     鎽樿: 鎰熻綰挎т唬鏁頒綔涓氶噷涓鐩村皯涓嶄簡鐭╅樀姹傞嗭紝 <br> <br>鍐欎釜甯﹁緭鍑虹畻閫嗙煩闃電殑姝ラ鐨勭煩闃墊眰閫嗙▼搴忥紝甯屾湜緇欏嵆灝嗘垨姝e湪瀛︾嚎浠g殑鍚屽涓鐐規柟渚褲?nbsp; <a href='http://m.shnenglu.com/billhsu/archive/2009/12/11/103010.html'>闃呰鍏ㄦ枃</a><img src ="http://m.shnenglu.com/billhsu/aggbug/103010.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.shnenglu.com/billhsu/" target="_blank">Bill Hsu</a> 2009-12-11 22:23 <a href="http://m.shnenglu.com/billhsu/archive/2009/12/11/103010.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鏈閰風殑鎺掑簭綆楁硶婕旂ずhttp://m.shnenglu.com/billhsu/archive/2009/11/08/100381.htmlBill HsuBill HsuSat, 07 Nov 2009 16:08:00 GMThttp://m.shnenglu.com/billhsu/archive/2009/11/08/100381.htmlhttp://m.shnenglu.com/billhsu/comments/100381.htmlhttp://m.shnenglu.com/billhsu/archive/2009/11/08/100381.html#Feedback0http://m.shnenglu.com/billhsu/comments/commentRss/100381.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/100381.html


Bill Hsu 2009-11-08 00:08 鍙戣〃璇勮
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瀵昏礬綆楁硶鏁寸悊http://m.shnenglu.com/billhsu/archive/2009/01/23/72513.htmlBill HsuBill HsuFri, 23 Jan 2009 09:22:00 GMThttp://m.shnenglu.com/billhsu/archive/2009/01/23/72513.htmlhttp://m.shnenglu.com/billhsu/comments/72513.htmlhttp://m.shnenglu.com/billhsu/archive/2009/01/23/72513.html#Feedback3http://m.shnenglu.com/billhsu/comments/commentRss/72513.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/72513.html
1.DFS
浼樺厛娣卞叆姣忎釜鍥撅紝鐩村埌鎵懼埌鐩爣鑺傜偣
寰寰鍙互鎵懼埌鍒拌揪璺嚎錛屽彲寰寰涓嶆槸鏈浼樼殑銆?br />09-1-23-DFS.JPG


2.BFS
騫垮害浼樺厛鍦板鎵劇洰鏍囪妭鐐廣?br />寰寰鍙互鎵懼埌鏈浼樿礬寰勶紝浣嗚楁椂澶氥?br />09-1-23-BFS.JPG


3.Dijkstra
浣跨敤浜嗗姩鎬佽鍒掞紙鍘熸枃涓О涓衡滆竟鏀炬澗鈥濓級//璇ヤ負璐績錛屾湰浜虹姜榪?br />閫熷害杈冨揩
09-1-23-Dijkstra.JPG


4.A*
涓嶥ijkstra鐩鎬技錛屼嬌鐢ㄥ惎鍙戝洜瀛?F=G+H)錛岄熷害鏄互涓婄畻娉曢噷鏈蹇殑銆?br />鍙互鐪嬬湅錛?br />http://hi.baidu.com/probill/blog/item/80d71f1b19e2fe1e8718bfe5.html
09-1-23-Astar.JPG

5.鍒涘緩瀵艱埅鍥?br />09-1-23-Nav.JPG


Bill Hsu 2009-01-23 17:22 鍙戣〃璇勮
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A* (A-star A鏄?瀵昏礬綆楁硶http://m.shnenglu.com/billhsu/archive/2008/11/01/65700.htmlBill HsuBill HsuSat, 01 Nov 2008 10:19:00 GMThttp://m.shnenglu.com/billhsu/archive/2008/11/01/65700.htmlhttp://m.shnenglu.com/billhsu/comments/65700.htmlhttp://m.shnenglu.com/billhsu/archive/2008/11/01/65700.html#Feedback0http://m.shnenglu.com/billhsu/comments/commentRss/65700.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/65700.html浠旂粏鐪嬩簡鐪媑amedev.net鐨勪竴鐗囨枃绔?A* Pathfinding for Beginners http://www.gamedev.net/reference/articles/article2003.asp )錛屽A*鏇翠簡瑙d簡涓鐐癸紝鍐欑偣涓滆タ璁板綍涓涓嬨?br />A*鏄竴縐嶅惎鍙戝紡鐨勭畻娉曪紝鎵璋撶殑"鍚彂寮?錛屽氨鏄姣忎竴涓悳绱㈢殑浣嶇疆榪涜璇勪及錛屼篃灝辨槸鎶婃壘鐨勪綅緗鐩爣鐨勮窛紱誨綋鎴愭壘鐐圭殑涓涓緷鎹紝鐒跺悗鐚滄祴榪欎釜鐐規槸鍚︽渶浣?"鍚彂寮?灝辨槸鐚滄祴)銆?br />
image001.jpg

涓轟簡鎵懼埌鏈浣崇殑閭d釜鐐?br />鍙互瑙勫畾錛?br />G = 浠庤搗鐐癸紝娌跨潃浜х敓鐨勮礬寰勶紝縐誨姩鍒扮綉鏍間笂鎸囧畾鏂規牸鐨勮窛紱匯?br />H = 浠庣綉鏍間笂閭d釜鏂規牸縐誨姩鍒扮粓鐐笲鐨勯浼扮Щ鍔ㄨ窛紱匯?br />
F = G + H
F鏈灝忕殑鐐瑰彲浠ヨ涓烘槸璇ラ夌殑鐐廣?br />
寮曠敤涓涓嬪師鏂囩殑緲昏瘧錛?br />鎴戜滑浠ゆ按騫蟲垨鑰呭瀭鐩寸Щ鍔ㄧ殑鑰楄垂涓?0錛屽瑙掔嚎鏂瑰悜鑰楄垂涓?4銆傛垜浠彇榪欎簺鍊兼槸鍥犱負娌垮瑙掔嚎鐨勮窛紱繪槸娌挎按騫蟲垨鍨傜洿縐誨姩鑰楄垂鐨勭殑鏍瑰彿2錛堝埆鎬曪級錛屾垨鑰呯害1.414鍊嶃備負浜嗙畝鍖栵紝鎴戜滑鐢?0鍜?4榪戜技銆傛瘮渚嬪熀鏈紜紝鍚屾椂鎴戜滑閬垮厤浜嗘眰鏍硅繍綆楀拰灝忔暟銆?br />

鏃㈢劧鎴戜滑鍦ㄨ綆楁部鐗瑰畾璺緞閫氬線鏌愪釜鏂規牸鐨凣鍊鹼紝姹傚肩殑鏂規硶灝辨槸鍙栧畠鐖惰妭鐐圭殑G鍊鹼紝鐒跺悗渚濈収瀹冪浉瀵圭埗鑺傜偣鏄瑙掔嚎鏂瑰悜鎴栬呯洿瑙掓柟鍚?闈炲瑙掔嚎)錛屽垎鍒鍔?4鍜?0銆備緥瀛愪腑榪欎釜鏂規硶鐨勯渶姹備細鍙樺緱鏇村錛屽洜涓烘垜浠粠璧風偣鏂規牸浠ュ鑾峰彇浜嗕笉姝竴涓柟鏍箋?br />
H鍊煎彲浠ョ敤涓嶅悓鐨勬柟娉曚及綆椼傛垜浠繖閲屼嬌鐢ㄧ殑鏂規硶琚О涓烘浖鍝堥】鏂規硶錛屽畠璁$畻浠庡綋鍓嶆牸鍒扮洰鐨勬牸涔嬮棿姘村鉤鍜屽瀭鐩寸殑鏂規牸鐨勬暟閲忔誨拰錛屽拷鐣ュ瑙掔嚎鏂瑰悜銆傜劧鍚庢妸緇撴灉涔樹互10銆傝繖琚垚涓烘浖鍝堥】鏂規硶鏄洜涓哄畠鐪嬭搗鏉ュ儚璁$畻鍩庡競涓粠涓涓湴鏂瑰埌鍙﹀涓涓湴鏂圭殑琛楀尯鏁幫紝鍦ㄩ偅閲屼綘涓嶈兘娌垮瑙掔嚎鏂瑰悜絀胯繃琛楀尯銆傚緢閲嶈鐨勪竴鐐癸紝鎴戜滑蹇界暐浜嗕竴鍒囬殰紕嶇墿銆傝繖鏄鍓╀綑璺濈鐨勪竴涓及綆楋紝鑰岄潪瀹為檯鍊鹼紝榪欎篃鏄繖涓鏂規硶琚О涓哄惎鍙戝紡鐨勫師鍥犮傛兂鐭ラ亾鏇村錛熶綘鍙互鍦ㄨ繖閲屾壘鍒版柟紼嬪拰棰濆鐨勬敞瑙c?br />


絎竴姝ユ悳绱㈢殑緇撴灉鍙互鍦ㄤ笅闈㈢殑鍥捐〃涓湅鍒般侳,G鍜孒鐨勮瘎鍒嗚鍐欏湪姣忎釜鏂規牸閲屻傛濡傚湪绱ф尐璧峰鏍煎彸渚х殑鏂規牸鎵琛ㄧず鐨勶紝F琚墦鍗板湪宸︿笂瑙掞紝G鍦ㄥ乏涓嬭錛孒鍒欏湪鍙充笅瑙掋?/span>

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寮曠敤涓涓嬪師鏂囩殑緲昏瘧錛?/span>

鎴戜滑鍋氬涓嬫搷浣滃紑濮嬫悳绱細
聽聽聽
1錛屼粠鐐笰寮濮嬶紝騫朵笖鎶婂畠浣滀負寰呭鐞嗙偣瀛樺叆涓涓滃紑鍚垪琛ㄢ濄傚紑鍚垪琛ㄥ氨鍍忎竴寮犺喘鐗╂竻鍗曘傚敖綆$幇鍦ㄥ垪琛ㄩ噷鍙湁涓涓厓绱狅紝浣嗕互鍚庡氨浼氬璧鋒潵銆備綘鐨勮礬寰勫彲鑳戒細閫氳繃瀹冨寘鍚殑鏂規牸錛屼篃鍙兘涓嶄細銆傚熀鏈笂錛岃繖鏄竴涓緟媯鏌ユ柟鏍肩殑鍒楄〃銆?br />聽聽聽2錛屽鎵捐搗鐐瑰懆鍥存墍鏈夊彲鍒拌揪鎴栬呭彲閫氳繃鐨勬柟鏍鹼紝璺寵繃鏈夊錛屾按錛屾垨鍏朵粬鏃犳硶閫氳繃鍦板艦鐨勬柟鏍箋備篃鎶婁粬浠姞鍏ュ紑鍚垪琛ㄣ備負鎵鏈夎繖浜涙柟鏍間繚瀛樼偣A浣滀負鈥滅埗鏂規牸鈥濄傚綋鎴戜滑鎯蟲弿榪拌礬寰勭殑鏃跺欙紝鐖舵柟鏍肩殑璧勬枡鏄崄鍒嗛噸瑕佺殑銆傚悗闈細瑙i噴瀹冪殑鍏蜂綋鐢ㄩ斻?br />聽聽聽3錛屼粠寮鍚垪琛ㄤ腑鍒犻櫎鐐笰錛屾妸瀹冨姞鍏ュ埌涓涓滃叧闂垪琛ㄢ濓紝鍒楄〃涓繚瀛樻墍鏈変笉闇瑕佸啀嬈℃鏌ョ殑鏂規牸銆?br />
涓轟簡緇х畫鎼滅儲錛屾垜浠畝鍗曠殑浠庡紑鍚垪琛ㄤ腑閫夋嫨F鍊兼渶浣庣殑鏂規牸銆傜劧鍚庯紝瀵歸変腑鐨勬柟鏍煎仛濡備笅澶勭悊錛?br />
聽聽聽
4錛屾妸瀹冧粠寮鍚垪琛ㄤ腑鍒犻櫎錛岀劧鍚庢坊鍔犲埌鍏抽棴鍒楄〃涓?br />聽聽聽5錛屾鏌ユ墍鏈夌浉閭繪牸瀛愩傝煩榪囬偅浜涘凡緇忓湪鍏抽棴鍒楄〃涓殑鎴栬呬笉鍙氳繃鐨?鏈夊錛屾按鐨勫湴褰紝鎴栬呭叾浠栨棤娉曢氳繃鐨勫湴褰?錛屾妸浠栦滑娣誨姞榪涘紑鍚垪琛紝濡傛灉浠栦滑榪樹笉鍦ㄩ噷闈㈢殑璇濄傛妸閫変腑鐨勬柟鏍間綔涓烘柊鐨勬柟鏍肩殑鐖惰妭鐐廣?br />聽聽聽6錛屽鏋滄煇涓浉閭繪牸宸茬粡鍦ㄥ紑鍚垪琛ㄩ噷浜嗭紝媯鏌ョ幇鍦ㄧ殑榪欐潯璺緞鏄惁鏇村ソ銆傛崲鍙ヨ瘽璇達紝媯鏌ュ鏋滄垜浠敤鏂扮殑璺緞鍒拌揪瀹冪殑璇濓紝G鍊兼槸鍚︿細鏇翠綆涓浜涖傚鏋滀笉鏄紝閭e氨浠涔堥兘涓嶅仛銆?br />聽聽聽聽聽聽鍙︿竴鏂歸潰錛屽鏋滄柊鐨凣鍊兼洿浣庯紝閭e氨鎶婄浉閭繪柟鏍肩殑鐖惰妭鐐規敼涓虹洰鍓嶉変腑鐨勬柟鏍鹼紙鍦ㄤ笂闈㈢殑鍥捐〃涓紝鎶婄澶寸殑鏂瑰悜鏀逛負鎸囧悜榪欎釜鏂規牸錛夈傛渶鍚庯紝閲嶆柊璁$畻F鍜孏鐨勫箋傚鏋滆繖鐪嬭搗鏉ヤ笉澶熸竻鏅幫紝浣犲彲浠ョ湅涓嬮潰鐨勫浘紺恒?/span>


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榪欐牱灝卞彲浠ユ壘鍒版渶浣寵礬寰勪簡銆?br />



Bill Hsu 2008-11-01 18:19 鍙戣〃璇勮
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紲炵粡鍏冪綉緇滅殑瓚呯駭鍏ラ棬http://m.shnenglu.com/billhsu/archive/2008/08/30/60455.htmlBill HsuBill HsuSat, 30 Aug 2008 12:08:00 GMThttp://m.shnenglu.com/billhsu/archive/2008/08/30/60455.htmlhttp://m.shnenglu.com/billhsu/comments/60455.htmlhttp://m.shnenglu.com/billhsu/archive/2008/08/30/60455.html#Feedback2http://m.shnenglu.com/billhsu/comments/commentRss/60455.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/60455.html
2001 騫?nbsp;6 鏈?nbsp;01 鏃?br>
    紲炵粡緗戠粶涔熻鏄綆楁満璁$畻鐨勫皢鏉ワ紝涓涓簡瑙e畠鐨勫ソ鏂規硶鏄敤涓涓畠鍙互瑙e喅鐨勯毦棰樻潵璇存槑銆傚亣璁劇粰鍑?nbsp;
500 涓瓧絎︾殑浠g爜孌碉紝鎮ㄧ煡閬撳畠浠槸 C銆丆++銆丣ava 鎴栬?nbsp;Python銆傜幇鍦ㄦ瀯閫犱竴涓▼搴忥紝鏉ヨ瘑鍒紪鍐欒繖孌典唬鐮佺殑璇█銆備竴縐嶈В鍐蟲柟妗堟槸鏋勯犱竴涓兘澶熷涔犺瘑鍒繖浜涜璦鐨勭緇忕綉緇溿傝繖綃囨枃绔犺璁轟簡紲炵粡緗戠粶鐨勫熀鏈姛鑳戒互鍙婃瀯閫犵緇忕綉緇滅殑鏂規硶錛岃繖鏍峰氨鍙互鍦ㄧ紪鐮佹椂搴旂敤瀹冧滑浜嗐?/span>

Bill娉細瑙i噴涓涓嬶紝榪欐枃绔犳槸鐢? ( _ . = ; " , ' * / { } : - 0 + 1 [ ] 榪?0涓壒孌婄鍙峰嚭鐜伴鐜?浜哄伐紲炵粡鍏冪殑鍒ゆ柇鏉ヨ瘑鍒?span style="color: #000000;">浠g爜孌?/span>鏄?nbsp;C銆丆++銆丣ava 鎴栬?nbsp;Python


鏍規嵁涓涓畝鍖栫殑緇熻錛屼漢鑴戠敱鐧句嚎鏉$緇忕粍鎴?鈥? 姣忔潯紲炵粡騫沖潎榪炵粨鍒板叾瀹冨嚑鍗冩潯紲炵粡銆傞氳繃榪欑榪炵粨鏂瑰紡錛岀緇忓彲浠ユ敹鍙戜笉鍚屾暟閲忕殑鑳介噺銆傜緇忕殑涓涓潪甯擱噸瑕佺殑鍔熻兘鏄畠浠鑳介噺鐨勬帴鍙楀茍涓嶆槸绔嬪嵆浣滃嚭鍝嶅簲錛岃? 鏄皢瀹冧滑绱姞璧鋒潵錛屽綋榪欎釜绱姞鐨勬誨拰杈懼埌鏌愪釜涓寸晫闃堝兼椂錛屽畠浠皢瀹冧滑鑷繁鐨勯偅閮ㄥ垎鑳介噺鍙戦佺粰鍏跺畠鐨勭緇忋傚ぇ鑴戦氳繃璋冭妭榪欎簺榪炵粨鐨勬暟鐩拰寮哄害榪涜瀛︿範銆傚敖綆? 榪欐槸涓敓鐗╄涓虹殑綆鍖栨弿榪般備絾鍚屾牱鍙互鍏呭垎鏈夊姏鍦拌鐪嬩綔鏄緇忕綉緇滅殑妯″瀷銆?/p>

闃堝奸昏緫鍗曞厓錛圱hreshold Logic Unit錛孴LU錛?/span>

鐞嗚В紲炵粡緗戠粶鐨勭涓姝ユ槸浠庡鎶借薄鐢熺墿紲炵粡寮濮嬶紝騫舵妸閲嶇偣鏀懼湪 闃堝奸昏緫鍗曞厓錛圱LU錛?/em>榪欎竴鐗瑰緛涓娿備竴涓? TLU 鏄竴涓璞★紝瀹冨彲浠ヨ緭鍏ヤ竴緇勫姞鏉冪郴鏁扮殑閲忥紝瀵瑰畠浠繘琛屾眰鍜岋紝濡傛灉榪欎釜鍜岃揪鍒版垨鑰呰秴榪囦簡鏌愪釜闃堝鹼紝杈撳嚭涓涓噺銆? 璁╂垜浠敤絎﹀彿鏍囨敞榪欎簺鍔熻兘錛岄鍏堬紝鏈夎緭鍏ュ間互鍙婂畠浠殑鏉冪郴鏁幫細X 1, X 2, ..., X n鍜?W 1, W 2, ..., W n銆傛帴鐫鏄眰鍜岃綆楀嚭鐨?X i*W i 錛屼駭鐢熶簡嬋鍙戝眰 a錛屾崲涓縐嶆柟娉曡〃紺猴細

a = (X1 * W1)+(X2 * W2)+...+(Xi * Wi)+...+ (Xn * Wn)

闃堝肩О涓?theta銆傛渶鍚庯紝杈撳嚭緇撴灉 y銆傚綋 a >=theta 鏃?y=1錛屽弽涔? y=0銆傝娉ㄦ剰杈撳嚭鍙互鏄繛緇殑錛屽洜涓哄畠涔熷彲浠ョ敱涓涓?squash 鍑芥暟 s錛堟垨 sigma錛夊垽瀹氾紝璇ュ嚱鏁扮殑鑷彉閲忔槸 a錛屽嚱鏁板煎湪 0 鍜?1 涔嬮棿錛寉=s(a)銆?/p>
鍥?1. 闃堝奸昏緫鍗曞厓錛屽甫鏈?sigma 鍑芥暟錛堥《閮級鍜?cutoff 鍑芥暟錛堝簳閮級
闃堝奸昏緫鍗曞厓

TLU 浼氬垎綾伙紝鍋囪涓涓?TLU 鏈変袱涓緭鍏ュ鹼紝瀹冧滑鐨勬潈緋繪暟絳変簬 1錛宼heta 鍊肩瓑浜?1.5銆傚綋榪欎釜 TLU 杈撳叆 <0,0>銆?lt;0,1>銆?lt;1,0> 鍜?<1,1> 鏃訛紝瀹冪殑杈撳嚭鍒嗗埆涓?0銆?銆?銆?銆俆LU 灝嗚繖浜涜緭鍏ュ垎涓轟袱緇勶細0 緇勫拰 1 緇勩傚氨鍍忔噦寰楅昏緫榪炴帴錛堝竷灝旇繍綆? AND錛夌殑浜鴻剳鍙互綾諱技鍦板皢閫昏緫榪炴帴鐨勫彞瀛愬垎綾婚偅鏍鳳紝TLU 涔熸噦寰椾竴鐐歸昏緫榪炴帴涔嬬被鐨勪笢瑗褲?/p>

TLU 鑳藉鐢ㄥ嚑浣曞涓婄殑瑙i噴鏉ラ槓鏄庤繖縐嶇幇璞°傚畠鐨勫洓縐嶅彲鑳借緭鍏ュ搴斾簬絎涘崱灝斿浘鐨勫洓涓偣銆備粠絳夊紡 X 1*W 1+ X 2*W 2 = theta錛屾崲鍙ヨ瘽璇達紝涔熷嵆 TLU 杞崲鍏跺垎綾昏涓虹殑鐐瑰紑濮嬶紝瀹冪殑鐐歸兘鍒嗗竷鍦ㄦ洸綰?X 2 = -X 1 + 1.5 涓娿傝繖涓柟紼嬬殑鏇茬嚎灝?4 涓彲鑳界殑杈撳叆鍒嗘垚浜嗕袱涓搴斾簬 TLU 鍒嗙被鐨勫尯鍩熴傝繖鏄?TLU 鍘熺悊涓洿涓烘櫘閫氱殑瀹炰緥銆傚湪 TLU 鏈変換鎰忔暟鐩殑 N 涓緭鍏ョ殑鎯呭喌涓嬶紝涓緇勫彲鑳界殑杈撳叆瀵瑰簲浜?N 緇寸┖闂翠腑鐨勪竴涓偣闆嗐傚鏋滆繖浜涚偣鍙互琚秴騫抽潰 鈥? 鎹㈠彞璇濊錛屽搴斾簬涓婇潰紺轟緥涓殑綰跨殑 N 緇寸殑鍑犱綍澶栧艦鍒囧壊錛岄偅涔堝氨鏈変竴緇勬潈緋繪暟鍜屼竴涓槇鍊兼潵瀹氫箟鍏跺垎綾誨垰濂戒笌榪欎釜鍒囧壊鐩稿尮閰嶇殑 TLU銆?

Bill娉細鎵璋撶殑N緇寸┖闂村氨鏄疦涓緭鍏ヨ妭鐐?br>

TLU 鐨勫涔犲師鐞?/span>

鏃㈢劧 TLU 鎳傚緱鍒嗙被錛屽畠浠氨鐭ラ亾绱犳潗銆傜緇忕綉緇滀篃鍙亣瀹氫負鍙互瀛︿範銆傚畠浠殑瀛︿範鏈哄埗鏄ā浠垮ぇ鑴戣皟鑺傜緇忚繛緇撶殑鍘熺悊銆俆LU 閫氳繃鏀瑰彉瀹冪殑鏉冪郴鏁板拰闃堝兼潵瀛︿範銆傚疄闄呬笂錛屼粠鏁板鐨勮鐐圭湅錛屾潈緋繪暟闃堝肩殑鐗瑰緛鏈夌偣姝︽柇銆傝鎴戜滑鍥炴兂涓涓嬪綋 SUM(Xi * Wi) >= theta 鏃?TLU 鍦ㄤ復鐣岀偣鏃惰緭鍑虹殑鏄?1 鑰屼笉鏄? 0錛岃繖鐩稿綋浜庤涓寸晫鐐規槸鍑虹幇鍦?SUM(X i* W i)+ (-1 * theta) >= 0 鐨勬椂鍊欍傛墍浠ワ紝鎴戜滑鍙互鎶?-1 鐪嬫垚涓涓父閲忚緭鍏ワ紝瀹冪殑鏉冪郴鏁?theta 鍦ㄥ涔狅紙鎴栬呯敤鎶鏈湳璇紝縐頒負 鍩硅錛夌殑榪囩▼涓繘琛岃皟鏁淬傝繖鏍鳳紝褰? SUM(X i* W i)+ (-1 * theta) >= 0 鏃訛紝y=1錛屽弽涔?y=0銆?

鍦ㄥ煿璁繃紼嬩腑錛岀緇忕綉緇滆緭鍏ワ細

  1. 涓緋誨垪闇瑕佸垎綾葷殑鏈紺轟緥
  2. 瀹冧滑鐨勬紜垎綾繪垨鑰呯洰鏍?/li>

榪欐牱鐨勮緭鍏ュ彲浠ョ湅鎴愪竴涓悜閲忥細<X 1, X 2, ..., X n, theta, t>錛岃繖閲?t 鏄竴涓洰鏍囨垨鑰呮紜垎綾匯傜緇忕綉緇滅敤榪欎簺鏉ヨ皟鏁存潈緋繪暟錛屽叾鐩殑浣垮煿璁腑鐨勭洰鏍囦笌鍏跺垎綾葷浉鍖歸厤銆傛洿紜垏鍦拌錛岃繖鏄湁鎸囧鐨勫煿璁紝涓庝箣鐩稿弽鐨勬槸鏃犳寚瀵肩殑鍩硅銆傚墠鑰呮槸鍩轟簬甯︾洰鏍囩殑紺轟緥錛岃屽悗鑰呭嵈鍙槸寤虹珛鍦ㄧ粺璁″垎鏋愮殑鍩虹涓娿傛潈緋繪暟鐨勮皟鏁存湁涓涓涔犺鍒欙紝涓涓悊鎯沖寲鐨勫涔犵畻娉曞涓嬫墍紺猴細


娓呭崟 1. 鐞嗘兂鍖栫殑瀛︿範綆楁硶
fully_trained = FALSE
DO UNTIL (fully_trained):
fully_trained = TRUE
FOR EACH training_vector = <X1, X2, ..., Xn, theta, target>::
# Weights compared to theta
a = (X1 * W1)+(X2 * W2)+...+(Xn * Wn) - theta
y = sigma(a)
IF y != target:
fully_trained = FALSE
FOR EACH Wi:
MODIFY_WEIGHT(Wi) # According to the training rule
IF (fully_trained):
BREAK

鎮ㄦ垨璁告兂鐭ラ亾錛?#8220;鍝簺鍩硅瑙勫垯錛?#8221;鏈夊緢澶氾紝涓嶈繃鏈変竴鏉′技涔庡悎鐞嗙殑瑙勫垯鏄熀浜庤繖鏍蜂竴縐嶆濇兂錛屽嵆鏉冪郴鏁板拰闃堝肩殑璋冩暣搴旇鐢卞垎寮? (t - y) 紜畾銆傝繖涓鍒欓氳繃寮曞叆 alpha (0 < alpha < 1) 瀹屾垚銆傛垜浠妸 alpha 縐頒負 瀛︿範鐜?/em>銆俉 i 涓殑鏇存敼鍊肩瓑浜? (alpha * (t - y)* Xi)銆傚綋 alpha 瓚嬪悜浜?0 鏃訛紝紲炵粡緗戠粶鐨勬潈緋繪暟鐨勮皟鏁村彉寰椾繚瀹堜竴鐐癸紱褰?alpha 瓚嬪悜浜?1 鏃訛紝鏉冪郴鏁扮殑璋冩暣鍙樺緱嬋榪涖備竴涓嬌鐢ㄨ繖涓鍒欑殑紲炵粡緗戠粶縐頒負 鎰熺煡鍣?/em>錛屽茍涓旇繖涓鍒欒縐頒負 鎰熺煡鍣ㄥ涔犺鍒?/em>銆俁osenblatt 浜?1962 騫翠笅鐨勭粨璁烘槸錛屽鏋?N 緇寸┖闂寸殑鐐歸泦琚秴騫抽潰鍒囧壊錛岄偅涔堟劅鐭ュ櫒鐨勫煿璁畻娉曠殑搴旂敤灝嗕細鏈緇堝鑷存潈緋繪暟鐨勫垎閰嶏紝浠庤屽畾涔変簡涓涓? TLU錛屽畠鐨勮秴騫抽潰浼氳繘琛岄渶瑕佺殑鍒嗗壊銆傚綋鐒訛紝涓轟簡璁拌搗 Keynes錛屾渶緇堟垜浠兘鍒囨柇浜嗕笌澶栫晫鐨勮仈緋伙紝涓撳績鎬濊冦備絾鏄湪璁$畻鏃墮棿涔嬪錛屾垜浠粛嬋掍復鍗遍櫓錛屽洜涓烘垜浠渶瑕佽嚜宸辯殑紲炵粡緗戠粶瀵瑰彲鑳借緭鍏ョ殑絀洪棿榪涜涓嶆涓嬈$殑鍒囧壊銆?

鏂囩珷寮濮嬬殑闅鵑涓句緥璇存槑浜嗚繖涓紝鍋囪緇欐偍 N 涓瓧絎︾殑浠g爜孌碉紝鎮ㄧ煡閬撴槸 C銆丆++銆丣ava 鎴栬? Python銆傞毦鐨勬槸鏋勯犱竴涓▼搴忔潵鏍囪瘑緙栧啓榪欐浠g爜鐨勮璦銆傜敤 TLU 鏉ュ疄鐜伴渶瑕佸鍙兘鐨勮緭鍏ョ┖闂磋繘琛屼笉姝竴嬈$殑鍒嗗壊銆傚畠闇瑕佹妸絀洪棿鍒嗘垚鍥涗釜鍖哄煙銆傛瘡縐嶈璦涓涓尯鍩熴傛妸紲炵粡緗戠粶鍩硅鎴愯兘瀹炵幇涓や釜鍒囧壊灝卞彲瀹屾垚榪欑宸ヤ綔銆傜涓涓垏鍓插皢 C/C++ 鍜?Java/Python 鍒嗗紑鏉ワ紝鍙︿竴涓皢 C/Java 鍜?C++/Python 鍒嗗紑銆備竴涓兘澶熷畬鎴愯繖浜涘垏鍓茬殑緗戠粶鍚屾牱鍙互璇嗗埆婧愪唬鐮佹牱鏈腑鐨勮璦銆備絾鏄繖闇瑕佺綉緇滄湁涓嶅悓緇撴瀯錛屽湪鎻忚堪榪欎釜涓嶅悓涔嬪涔嬪墠錛屽厛鏉ョ畝鍗曞湴鐪嬩竴涓嬪疄璺墊柟闈㈢殑鑰冭檻銆?/p>

鍥?2. 鍒濇鐨勶紙涓嶅畬鏁寸殑錛夋劅鐭ュ櫒瀛︿範妯″瀷
鎰熺煡鍣ㄥ涔犳ā鍨? name=

鑰冭檻鍒版帓闄ゅ彇寰?N 涓瓧絎︿唬鐮佹墍闇鐨勮綆楁椂闂達紝緇熻浠?ASCII 鐮佺殑 32 鍒?127 鐨勮寖鍥村唴鍙 ASCII 鐮佸瓧絎﹀嚭鐜扮殑棰戠巼錛屽茍鍦ㄨ繖涓粺璁′互鍙婂叧浜庝唬鐮佽璦鐨勭洰鏍囦俊鎭殑鍩虹涓婂煿璁緇忕綉緇溿傛垜浠殑鏂規硶鏄皢瀛楃緇熻闄愬埗鍒? C銆丆++銆丣ava 鍜?Python 浠g爜瀛楃搴撲腑鏈甯哥敤鐨?20 涓潪瀛楁瘝鏁板瓧瀛楃銆傜敱浜庡叧娉ㄦ誕鐐硅繍綆楃殑鎵ц錛屾垜浠墦綆楃敤涓縐嶈鏍煎寲鍥犵礌灝嗚繖 20 瀛楃緇熻鍒嗗紑鏉ワ紝騫朵互姝ゅ煿璁垜浠殑緗戠粶銆傛樉鐒訛紝涓涓粨鏋勪笂鐨勪笉鍚屾槸鎴戜滑鐨勭綉緇滄湁 20 涓緭鍏ヨ妭鐐癸紝浣嗚繖鏄緢姝e父鐨勶紝鍥犱負鎴戜滑鐨勬弿榪板凡緇忔殫紺轟簡榪欑鍙兘鎬с備竴涓洿鏈夋剰鎬濈殑鍖哄埆鏄嚭鐜頒簡涓瀵逛腑闂磋妭鐐癸紝N1 鍜?N2錛屼互鍙婅緭鍑鴻妭鐐規暟閲忎粠涓や釜鍙樻垚浜嗗洓涓紙O1 鍒?O4錛夈?/p>

鎴戜滑灝嗗煿璁?N1錛岃繖鏍峰綋瀹冧竴鐪嬪埌 C 鎴?C++錛岃緗?y1=1錛岀湅鍒?Java 鎴? Python錛屽畠灝嗚緗?y1=0銆傚悓鐞嗗煿璁?N2錛屽綋瀹冧竴鐪嬪埌 C 鎴?Java錛岃緗? y2=1錛岀湅鍒?C++ 鎴?Python錛岃緗?y2=0銆傛澶栵紝N1 鍜?N2 灝嗚緭鍑?1 鎴?0 緇?Oi銆傜幇鍦ㄥ鏋?N1 鐪嬪埌 C 鎴?C++錛岃屼笖 N2 鐪嬪埌 C 鎴栬? Java錛岄偅涔堥毦棰樹腑鐨勪唬鐮佹槸 C銆傝屽鏋?N1 鐪嬪埌 C 鎴?C++錛孨2 鐪嬪埌 C++ 鎴? Python錛岄偅涔堜唬鐮佸氨鏄?C++銆傝繖涓ā寮忓緢鏄捐屾槗瑙併傛墍浠ュ亣璁?Oi 宸茶鍩硅騫舵牴鎹笅闈㈣〃鏍肩殑鎯呭喌杈撳嚭 1 鎴?0銆?/p>

鏄犲皠鍒拌緭鍑猴紙浣滀負甯冨皵鍑芥暟錛夌殑涓棿鑺傜偣

N1 N2 O1 (C) O2 (C++) O3 (Java) O4 (Python)
0 0 0 0 0 1
0 1 0 0 1 0
1 0 0 1 0 0
1 1 1 0 0 0

濡傛灉榪欐牱鍙鐨勮瘽錛屾垜浠殑緗戠粶灝卞彲浠ヤ粠浠g爜紺轟緥涓瘑鍒嚭璇█浜嗐傝繖涓兂娉曞緢濂姐備絾鏄湪瀹炶返涓婂嵈鏈変簺闅句互緗俊銆備笉榪囪繖縐嶈В鍐蟲柟妗堥紺轟簡 C/C++ 鍜?Java/Python 杈撳叆琚竴涓秴騫抽潰鍒囧壊浜嗭紝鍚屾牱 C/Java 鍜? C++/Python 杈撳叆琚彟涓涓垏鍓層傝繖鏄竴涓綉緇滃煿璁殑瑙e喅鏂規錛岃總鍥炲湴瑙e喅浜嗚繖涓緭鍏ョ┖闂寸殑璁炬兂銆?/p>

Bill娉細鐪嬭搗鏉ュ緢寮哄ぇ

鍏充簬 delta 瑙勫垯

鍙︿竴縐嶅煿璁殑瑙勫垯鍙仛 delta 瑙勫垯銆傛劅鐭ュ櫒鍩硅瑙勫垯鏄熀浜庤繖鏍蜂竴縐嶆濊礬 鈥?鏉冪郴鏁扮殑璋冩暣鏄敱鐩爣鍜岃緭鍑虹殑宸垎鏂圭▼琛ㄨ揪寮忓喅瀹氥傝? delta 瑙勫垯鏄熀浜庢搴﹂檷钀借繖鏍蜂竴縐嶆濊礬銆傝繖涓鏉傜殑鏁板姒傚康鍙互涓句釜綆鍗曠殑渚嬪瓙鏉ヨ〃紺恒備粠緇欏畾鐨勫嚑鐐規潵鐪嬶紝鍚戝崡鐨勯偅鏉¤礬寰勬瘮鍚戜笢閭f潯鏇撮櫋浜涖傚悜涓滃氨鍍忎粠鎮礀涓婃帀 涓嬫潵錛屼絾鏄悜鍗楀氨鏄部鐫涓涓暐寰炬枩鐨勬枩鍧′笅鏉ワ紝鍚戣タ鍍忕櫥涓搴ч櫋宄殑灞憋紝鑰屽寳杈瑰垯鍒頒簡騫沖湴錛屽彧瑕佹參鎱㈢殑闂查涘氨鍙互浜嗐傛墍浠ユ偍瑕佸鎵劇殑鏄埌杈懼鉤鍦扮殑鎵鏈夎礬寰? 涓皢闄″抄鐨勬誨拰鍑忓皯鍒版渶灝忕殑璺緞銆傚湪鏉冪郴鏁扮殑璋冩暣涓紝紲炵粡緗戠粶灝嗕細鎵懼埌涓縐嶅皢璇樊鍑忓皯鍒版渶灝忕殑鏉冪郴鏁扮殑鍒嗛厤鏂瑰紡銆?

灝嗘垜浠殑緗戠粶闄愬埗涓烘病鏈夐殣钘忚妭鐐癸紝浣嗘槸鍙兘浼氭湁涓嶆涓涓殑杈撳嚭鑺傜偣錛岃 p 鏄竴緇勫煿璁腑鐨勪竴涓厓绱狅紝t(p,n) 鏄浉搴旂殑杈撳嚭鑺傜偣 n 鐨勭洰鏍囥備絾鏄紝璁?y(p,n) 鐢變互涓婃彁鍒扮殑 squash 鍑芥暟 s 鍐沖畾錛岃繖閲? a(p,n) 鏄笌 p 鐩稿叧鐨?n 鐨勬縺媧誨嚱鏁幫紝鎴栬呯敤 (p,n) = s( a(p,n) ) 琛ㄧず涓轟笌 p 鐩稿叧鐨勮妭鐐?n 鐨?squash 榪囩殑嬋媧誨嚱鏁般備負緗戠粶璁懼畾鏉冪郴鏁幫紙姣忎釜 Wi錛夛紝涔熶負姣忎釜 p 鍜?n 寤虹珛 t(p,n) 涓?y(p,n) 鐨勫樊鍒嗭紝榪欏氨鎰忓懗鐫涓烘瘡涓?p 璁懼畾浜嗙綉緇滃叏閮ㄧ殑璇樊銆傚洜姝ゅ浜庢瘡緇勬潈緋繪暟鏉ヨ鏈変竴涓鉤鍧囪宸備絾鏄? delta 瑙勫垯鍙栧喅浜庢眰騫沖潎鍊兼柟娉曠殑綺劇‘搴︿互鍙婅宸傛垜浠厛涓嶈璁虹粏鑺傞棶棰橈紝鍙槸璇翠竴浜涗笌鏌愪簺 p 鍜?n 鐩稿叧鐨勮宸細?* square( t(p,n) - y(p,n) )銆傜幇鍦紝瀵逛簬姣忎釜 Wi錛屽鉤鍧囪宸畾涔夊涓嬶細


娓呭崟 2. 鏌ユ壘騫沖潎璇樊
sum = 0
FOR p = 1 TO M: # M is number of training vectors
FOR n = 1 TO N: # N is number of output nodes
sum = sum + (1/2 * (t(p,n)-y(p,n))^2)
average = 1/M * sum

delta 瑙勫垯灝辨槸渚濇嵁榪欎釜璇樊鐨勫畾涔夋潵瀹氫箟鐨勩傚洜涓鴻宸槸渚濇嵁閭d簺鍩硅鍚戦噺鏉ヨ鏄庣殑錛宒elta 瑙勫垯鏄竴縐嶈幏鍙栦竴涓壒孌婄殑鏉冪郴鏁伴泦浠ュ強涓涓壒孌婄殑鍚戦噺鐨勭畻娉曘傝屾敼鍙樻潈緋繪暟灝嗕細浣跨緇忕綉緇滅殑璇樊鏈灝忓寲銆傛垜浠笉闇瑕佽璁烘敮鎸佽繖涓畻娉曠殑寰Н鍒嗗錛屽彧瑕佽涓轟換浣? Wi 鍙戠敓鐨勫彉鍖栭兘鏄涓嬫墍紺哄氨澶熶簡錛?/p>
alpha * s'(a(p,n)) * (t(p,n) - y(p,n)) * X(p,i,n).

X(p,i,n) 鏄緭鍏ュ埌鑺傜偣 n 鐨?p 涓殑絎?i 涓厓绱狅紝alpha 鏄凡鐭ョ殑瀛︿範鐜囥傛渶鍚?s'( a(p,n) ) 鏄笌 p 鐩稿叧鐨勭 n 涓妭鐐規縺媧葷殑 squashing 鍑芥暟鐨勫彉鍖栵紙媧劇敓錛夌巼錛岃繖灝辨槸 delta 瑙勫垯錛屽茍涓?Widrow 鍜? Stearns 鍚戞垜浠睍紺轟簡褰? alpha 闈炲父灝忕殑鏃跺欙紝鏉冪郴鏁板悜閲忔帴榪戞煇涓皢璇樊鏈灝忓寲鐨勫悜閲忋傜敤浜庢潈緋繪暟璋冭妭鐨勫熀浜? delta 瑙勫垯鐨勭畻娉曞氨鏄姝ゃ?


姊害闄嶈惤錛堢洿鍒拌宸皬鍒伴傚綋鐨勭▼搴︿負姝級
step 1: for each training vector, p, find a(p)
step 2: for each i, change Wi by:
alpha * s'(a(p,n)) * (t(p,n)-y(p,n)) * X(p,i,n)

榪欓噷鏈変竴浜涗笌鎰熺煡鍣ㄧ畻娉曠浉鍖哄埆鐨勯噸瑕佷笉鍚岀偣銆傛樉鐒訛紝鍦ㄦ潈緋繪暟璋冩暣鐨勫叕寮忎笅鏈夌潃瀹屽叏涓嶅悓鐨勫垎鏋愩俤elta 瑙勫垯綆楁硶鎬繪槸鍦ㄦ潈緋繪暟涓婅皟鏁達紝鑰屼笖榪欐槸寤虹珛鍦ㄧ浉瀵硅緭鍑虹殑嬋媧繪柟寮忎笂銆傛渶鍚庯紝榪欎笉涓瀹氶傜敤浜庡瓨鍦ㄩ殣钘忚妭鐐圭殑緗戠粶銆?/p>

鍙嶅悜浼犳挱榪欎竴綆楁硶鎶婃敮鎸?delta 瑙勫垯鐨勫垎鏋愭墿灞曞埌浜嗗甫鏈夐殣钘忚妭鐐圭殑紲炵粡緗戠粶銆備負浜嗙悊瑙h繖涓棶棰橈紝璁炬兂 Bob 緇?Alice 璁蹭簡涓涓晠浜嬶紝鐒跺悗 Alice 鍙堣緇欎簡 Ted錛孴ed 媯鏌ヤ簡榪欎釜浜嬪疄鐪熺浉錛屽彂鐜拌繖涓晠浜嬫槸閿欒鐨勩傜幇鍦?Ted 闇瑕佹壘鍑哄摢浜涢敊璇槸 Bob 閫犳垚鐨勮屽摢浜涘張褰掑拵浜? Alice銆傚綋杈撳嚭鑺傜偣浠庨殣钘忚妭鐐硅幏寰楄緭鍏ワ紝緗戠粶鍙戠幇鍑虹幇浜嗚宸紝鏉冪郴鏁扮殑璋冩暣闇瑕佷竴涓畻娉曟潵鎵懼嚭鏁翠釜璇樊鏄敱澶氬皯涓嶅悓鐨勮妭鐐歸犳垚鐨勶紝緗戠粶闇瑕侀棶錛?#8220;鏄皝璁╂垜璇叆姝ч旓紵鍒版庢牱鐨勭▼搴︼紵濡備綍寮ヨˉ錛?#8221;榪欐椂錛岀綉緇滆鎬庝箞鍋氬憿錛?


鍥?3錛?#8220;浠g爜璇嗗埆”鍙嶅悜浼犳挱鐨勭緇忕綉緇?

鍙嶅悜浼犳挱綆楁硶鍚屾牱鏉ユ簮浜庢搴﹂檷钀藉師鐞嗭紝鍦ㄦ潈緋繪暟璋冩暣鍒嗘瀽涓殑鍞竴涓嶅悓鏄秹鍙婂埌 t(p,n) 涓?y(p,n) 鐨勫樊鍒嗐傞氬父鏉ヨ W i鐨勬敼鍙樺湪浜庯細

alpha * s'(a(p,n)) * d(n) * X(p,i,n)

鍏朵腑 d(n) 鏄殣钘忚妭鐐?n 鐨勫嚱鏁幫紝璁╂垜浠潵鐪嬶紙1錛塶 瀵逛換浣曠粰鍑虹殑杈撳嚭鑺傜偣鏈夊澶у獎鍝嶏紱錛?錛夎緭鍑鴻妭鐐規湰韜緗戠粶鏁翠綋鐨勮宸湁澶氬皯褰卞搷銆備竴鏂歸潰錛宯 褰卞搷涓涓緭鍑鴻妭鐐硅秺澶氾紝n 閫犳垚緗戠粶鏁翠綋鐨勮宸篃瓚婂銆傚彟涓鏂歸潰錛屽鏋滆緭鍑鴻妭鐐瑰獎鍝嶇綉緇滄暣浣撶殑璇樊瓚婂皯錛宯 瀵硅緭鍑鴻妭鐐圭殑褰卞搷涔熺浉搴斿噺灝戙傝繖閲?d(j) 鏄緗戠粶鐨勬暣浣撹宸殑鍩哄鹼紝W(n,j) 鏄?n 瀵?j 閫犳垚鐨勫獎鍝嶏紝d(j) * W(n,j) 鏄繖涓ょ褰卞搷鐨勬誨拰銆備絾鏄?n 鍑犱箮鎬繪槸褰卞搷澶氫釜杈撳嚭鑺傜偣錛屼篃璁鎬細褰卞搷姣忎竴涓緭鍑虹粨鐐癸紝榪欐牱錛宒(n) 鍙互琛ㄧず涓猴細

SUM(d(j)*W(n,j))

榪欓噷 j 鏄竴涓粠 n 鑾峰緱杈撳叆鐨勮緭鍑鴻妭鐐癸紝鑱旂郴璧鋒潵錛屾垜浠氨寰楀埌浜嗕竴涓煿璁鍒欙紝絎?1 閮ㄥ垎錛氬湪闅愯棌鑺傜偣 n 鍜岃緭鍑鴻妭鐐?j 涔嬮棿鏉冪郴鏁版敼鍙橈紝濡備笅鎵紺猴細

alpha * s'(a(p,n))*(t(p,n) - y(p,n)) * X(p,n,j)

絎?2 閮ㄥ垎錛氬湪杈撳叆鑺傜偣 i 鍜岃緭鍑鴻妭鐐?n 涔嬮棿鏉冪郴鏁版敼鍙橈紝濡備笅鎵紺猴細

alpha * s'(a(p,n)) * sum(d(j) * W(n,j)) * X(p,i,n)

榪欓噷姣忎釜浠?n 鎺ユ敹杈撳叆鐨勮緭鍑鴻妭鐐?j 閮戒笉鍚屻傚叧浜庡弽鍚戜紶鎾畻娉曠殑鍩烘湰鎯呭喌澶ц嚧濡傛銆?/p>

灝?Wi 鍒濆鍖栦負灝忕殑闅忔満鍊箋?/p>

浣胯宸皬鍒伴傚綋鐨勭▼搴﹁閬靛驚鐨勬楠?/span>

絎?1 姝ワ細杈撳叆鍩硅鍚戦噺銆?
絎?2 姝ワ細闅愯棌鑺傜偣璁$畻瀹冧滑鐨勮緭鍑?
絎?3 姝ワ細杈撳嚭鑺傜偣鍦ㄧ 2 姝ョ殑鍩虹涓婅綆楀畠浠殑杈撳嚭銆?
絎?4 姝ワ細璁$畻絎?3 姝ユ墍寰楃殑緇撴灉鍜屾湡鏈涘間箣闂寸殑宸?
絎?5 姝ワ細鎶婄 4 姝ョ殑緇撴灉濉叆鍩硅瑙勫垯鐨勭 1 閮ㄥ垎銆?
絎?6 姝ワ細瀵逛簬姣忎釜闅愯棌鑺傜偣 n錛岃綆?d(n)銆?
絎?7 姝ワ細鎶婄 6 姝ョ殑緇撴灉濉叆鍩硅瑙勫垯鐨勭 2 閮ㄥ垎銆?

閫氬父鎶婄 1 姝ュ埌絎?3 姝ョО涓? 姝e悜浼犳挱錛屾妸絎?4 姝ュ埌絎?7 姝ョО涓? 鍙嶅悜浼犳挱銆傚弽鍚戜紶鎾殑鍚嶅瓧鐢辨鑰屾潵銆?

鍦ㄦ帉鎻′簡鍙嶅悜浼犳挱綆楁硶鍚庯紝鍙互鏉ョ湅鎴戜滑鐨勮瘑鍒簮浠g爜鏍鋒湰璇█鐨勯毦棰樸備負浜嗚В鍐寵繖涓棶棰橈紝鎴戜滑鎻愪緵浜? Neil Schemenauer 鐨?Python 妯″瀷 bpnn銆傜敤瀹冪殑妯″瀷瑙e喅闂鐪熸槸闅句互緗俊鐨勭畝鍗曪紝鍦ㄦ垜浠殑綾? NN2 閲屽畾鍒朵簡涓涓被 NN 錛屼笉榪囨垜浠殑鏀瑰彉鍙槸璋冩暣浜嗚〃杈炬柟寮忓拰鏁翠釜榪囩▼鐨勮緭鍑猴紝騫舵病鏈夋秹鍙婂埌綆楁硶銆傚熀鏈殑浠g爜濡備笅鎵紺猴細


娓呭崟 3錛氱敤 bpnn.py 寤虹珛涓涓緇忕綉緇?/strong>
                # Create the network (number of input, hidden, and training nodes)
net = NN2(INPUTS, HIDDEN, OUTPUTS)
# create the training and testing data
trainpat = []
testpat = []
for n in xrange(TRAINSIZE+TESTSIZE):

#... add vectors to each set
# train it with some patterns
net.train(trainpat, iterations=ITERATIONS, N=LEARNRATE, M=MOMENTUM)
# test it
net.test(testpat)
# report trained weights
net.weights()


褰撶劧鎴戜滑闇瑕佽緭鍏ユ暟鎹紝瀹炵敤紼嬪簭 code2data.py 鎻愪緵浜嗚繖涓姛鑳姐傚畠鐨勭晫闈㈠緢鐩磋錛氬彧瑕佸皢涓鍫嗘墿灞曞悕鍚勪笉鐩稿悓鐨勬枃浠舵斁鍒頒竴涓瓙鐩綍 ./code 涓紝鐒跺悗榪愯榪欎釜瀹炵敤紼嬪簭錛屽茍鍒椾婦閭d簺鎵╁睍鍚嶄綔涓哄懡浠ら夐」銆備緥濡傦細

python code2data.py py c java

鎮ㄥ緱鍒扮殑鏄竴鍫?STDOUT 涓婄殑鍚戦噺錛屽彲浠ユ妸榪欎簺鍚戦噺杈撳叆鍒板彟涓涓繘紼嬫垨鑰呴噸瀹氬悜鍒頒竴涓枃浠訛紝瀹冪殑杈撳嚭濡備笅鎵紺猴細


娓呭崟 4錛欳ode2Data 鐨勮緭鍑哄悜閲?/strong>
0.15 0.01 0.01 0.04 0.07 0.00 0.00 0.03 0.01 0.00 0.00 0.00 0.05 0.00 > 1 0 0
0.14 0.00 0.00 0.05 0.13 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.13 0.00 > 1 0 0
[...]

璁╂垜浠洖蹇嗕竴涓嬭緭鍏ュ奸兘鏄笉鍚岀壒孌婂瓧絎﹀嚭鐜扮殑瑙勬牸鍖栨暟鐩紝鐩爣鍊鹼紙鍦ㄥぇ浜庡彿浠ュ悗錛夋槸 YES/NO錛屽畠浠h〃鍖呭惈榪欎簺瀛楃鐨勬簮浠g爜鏂囦歡鐨勭被鍨嬶紝涓嶈繃瀵逛簬浠涔堟槸浠涔堟潵璇達紝騫舵病鏈夐潪甯告槑鏄劇殑涓滆タ銆傛暟瀛楀彲浠ユ槸杈撳叆鎴栨湡鏈涚殑 浠繪剰鍊?/em>錛岃繖鎵嶆槸鏈閲嶈鐨勩?

涓嬩竴姝ユ槸榪愯瀹為檯鐨?code_recognizer.py 紼嬪簭銆傝繖闇瑕侊紙鍦? STDIN 涓級鍍忎笂闈竴鏍風殑鍚戦噺闆嗐傝繖涓▼搴忔湁涓涓寘錛屽畠鑳藉鏍規嵁瀹為檯鏂囦歡鎺ㄦ柇鍑洪渶瑕佸灝戣緭鍏ヨ妭鐐癸紙璁$畻鍦ㄥ唴鐨勫拰鏈熸湜鐨勶級錛岄夋嫨闅愯棌鑺傜偣鐨勬暟鐩槸涓涓瘈紿嶃傚浜庢簮浠g爜鐨勮瘑鍒紝6 鍒?8 涓殣钘忚妭鐐逛技涔庡伐浣滃緱寰堝ソ銆傚鏋滄墦綆楄瘯楠岀綉緇滀粠鑰屽彂鐜板浜庤繖浜涗笉鍚岀殑閫夐」瀹冩槸濡備綍鍋氱殑錛屾偍鍙互瑕嗙洊鍛戒護琛屼腑鐨勬墍鏈夊弬鏁幫紝浣嗘瘡涓嬈¤繍琛岃繕鏄細鑰楄垂涓浜涙椂闂淬傚煎緱娉ㄦ剰鐨勬槸錛? code_recognizer.py 灝嗗畠鐨勶紙澶х殑錛夋祴璇曠粨鏋滄枃浠跺彂閫佸埌 STDOUT錛岃屽皢涓浜涘弸濂界殑娑堟伅鏀懼湪 STDERR 閲屻傝繖鏍峰湪澶ч儴鍒嗘椂闂撮噷錛屼負浜嗗畨鍏ㄤ繚綆★紝鎮ㄥ皢浼氭妸 STDOUT 瀹氬悜鍒頒竴涓枃浠訛紝騫剁洃瑙嗛拡瀵硅繘紼嬪拰緇撴灉姒傝鐨?STDERR銆?/p>
娓呭崟 5錛氳繍琛? code_recognizer.py
> code2data.py py c java | code_recognizer.py > test_results.txt 
Total bytes of py-source: 457729
Total bytes of c-source: 245197
Total bytes of java-source: 709858
Input set: ) ( _ . = ; " , ' * / { } : - 0 + 1 [ ]
HIDDEN = 8
LEARNRATE = 0.5
ITERATIONS = 1000
TRAINSIZE = 500
OUTPUTS = 3
MOMENTUM = 0.1
ERROR_CUTOFF = 0.01
TESTSIZE = 500
INPUTS = 20
error -> 95.519... 23.696... 19.727... 14.012... 11.058... 9.652...
8.858... 8.236... 7.637... 7.065... 6.398... 5.413... 4.508...
3.860... 3.523... 3.258... 3.026... 2.818... 2.631... 2.463...
2.313... 2.180... 2.065... 1.965... 1.877... 1.798... 1.725...
[...]
0.113... 0.110... 0.108... 0.106... 0.104... 0.102... 0.100...
0.098... 0.096... 0.094... 0.093... 0.091... 0.089... 0.088...
0.086... 0.085... 0.084...
Success rate against test data: 92.60%

涓嶆柇鍑忓皯璇樊鏄釜寰堝ソ鐨勫厗澶達紝榪欒嚦灝戝湪涓孌甸暱鏃墮棿閲屾墍鑾峰緱鐨勪竴縐嶈繘姝ワ紝涓旀渶鍚庣殑緇撴灉蹇呯劧鏄繁鍏ヤ漢蹇冪殑銆傚氨鎴戜滑鐨勮鐐硅岃█錛岀綉緇滃畬鎴愪簡涓欏瑰煎緱灝婃暚鐨勫伐浣滐紝鏉ヨ瘑鍒唬鐮? 鈥?鎴戜滑灝嗕細涔愭剰鍊懼惉錛屽浜庢偍鐨勬暟瀛楀悜閲忓畠鏄浣曞仛鐨勩?



鍙傝冭祫鏂?





Bill Hsu 2008-08-30 20:08 鍙戣〃璇勮
]]>
stredit problemhttp://m.shnenglu.com/billhsu/archive/2008/08/01/57754.htmlBill HsuBill HsuFri, 01 Aug 2008 05:41:00 GMThttp://m.shnenglu.com/billhsu/archive/2008/08/01/57754.htmlhttp://m.shnenglu.com/billhsu/comments/57754.htmlhttp://m.shnenglu.com/billhsu/archive/2008/08/01/57754.html#Feedback0http://m.shnenglu.com/billhsu/comments/commentRss/57754.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/57754.htmlChange string s into string t in the least steps.
In each step you can insert or delete a char of the string.
INPUT n1 s
n2 t
n1 is the length of string s
n2 is the length of string t
OUT the least steps
exp:
INPUT 4 abcd
6 aefbhd
OUT 4
#include<iostream>
#include
<string>

using namespace std;

string s1,s2;
int map[100];
int i,j,result[100];
int n1,n2,nc;

int main(){
    cin
>>n1>>s1>>n2>>s2;
    nc
=0;
    
for (i=0;i<n1;i++){
        
if ((j=s2.find(s1[i]))>=0){
          map[nc]
=j;
          s2.replace(j,
1," ");
          nc
++;
          }
          }
    result[nc
-1]=1;
    
for (i=nc-2;i>=0;i--){
        
for (j=i+1;j<nc;j++if ((map[i]<map[j])&&(result[i]<result[j])) result[i]=result[j];
        result[i]
++;
        }
    j
=0;
    
for (i=0;i<nc;i++if(result[i]>j) j=result[i];
    cout
<<n1+n2-j-j;
    system(
"pause");
    
return 0;
}





Bill Hsu 2008-08-01 13:41 鍙戣〃璇勮
]]>
鐭沖瓙鍚堝茍http://m.shnenglu.com/billhsu/archive/2008/07/24/57083.htmlBill HsuBill HsuThu, 24 Jul 2008 13:37:00 GMThttp://m.shnenglu.com/billhsu/archive/2008/07/24/57083.htmlhttp://m.shnenglu.com/billhsu/comments/57083.htmlhttp://m.shnenglu.com/billhsu/archive/2008/07/24/57083.html#Feedback0http://m.shnenglu.com/billhsu/comments/commentRss/57083.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/57083.html 鍦ㄤ竴涓渾褰㈡搷鍦虹殑鍥涘懆鎽嗘斁鐫n鍫嗙煶瀛愩傜幇瑕佸皢鐭沖瓙鏈夋搴忓湴鍚堝茍鎴愪竴鍫嗐傝瀹氭瘡嬈″彧鑳介夌浉閭葷殑2鍫嗙煶瀛愬悎騫舵垚鏂扮殑涓鍫嗭紝騫跺皢鏂扮殑涓鍫嗙煶瀛愭暟璁頒負璇ユ鍚堝茍鐨勫緱鍒嗐傝瘯璁捐涓涓畻娉曪紝璁$畻鍑哄皢n鍫嗙煶瀛愬悎騫舵垚涓鍫嗙殑鏈灝忓緱鍒嗗拰鏈澶у緱鍒嗐?br>
/*
   Name: Stone Problem
   Copyleft: www.graptor.com
   Author: Bill Hsu
   Date: 27-04-08 15:15
*/

#include 
<iostream>
#include 
<string>
#include 
<fstream>

#define MAX 100
#define MAXint 1000
using namespace std;

int i,j;//寰幆鐢ㄧ殑
ifstream in("in.txt");
ofstream 
out ("out.txt");
int f[MAX][MAX];//f[i][j]琛ㄧず浠巌璧峰彇j鍫嗙殑鏈澶у?/span>
int sum[MAX][MAX];//sum[i][j]琛ㄧず浠巌璧峰彇j鍫嗙殑鍜?/span>
int num[MAX];

int main()
{
int n;
in >>n;
for(i=1;i<=n;i++)
{
in >>num[i];
sum[i][
1]=num[i];
f[i][
1]=0;
}
//end for

for (j=2;j<=n;++j)
{
cout 
<<endl<<j<<endl<<endl;
for(i=1;i<=n;++i)
{
cout 
<<(sum[i][j]=num[i]+sum[i%n+1][j-1])<<endl;

}
//end for i
}//end for j
int k,x,t;

for (j=2;j<=n;j++)
{
for(i=1;i<=n;i++)
{
f[i][j]
=MAXint;
t
=sum[i][j];
for(k=1;k<=j-1;k++)
{
x
=(i+k-1)%n+1;
if(f[i][k]+f[x][j-k]+t<f[i][j])
f[i][j]
=f[i][k]+f[x][j-k]+t;
}
//end for k
cout <<f[i][j]<<endl;
}
//end for i

}
//end for j

int tmp=f[1][n];
for(j=1;j<=n;++j)
{
if (f[j][n]<tmp)
tmp
=f[j][n];
}
//end for

cout 
<<tmp<<endl;

system(
"pause");
return 0;
}
//end main



Bill Hsu 2008-07-24 21:37 鍙戣〃璇勮
]]>
鑳介噺欏歸摼http://m.shnenglu.com/billhsu/archive/2008/07/23/56947.htmlBill HsuBill HsuWed, 23 Jul 2008 07:37:00 GMThttp://m.shnenglu.com/billhsu/archive/2008/07/23/56947.htmlhttp://m.shnenglu.com/billhsu/comments/56947.htmlhttp://m.shnenglu.com/billhsu/archive/2008/07/23/56947.html#Feedback0http://m.shnenglu.com/billhsu/comments/commentRss/56947.htmlhttp://m.shnenglu.com/billhsu/services/trackbacks/56947.html NOIP2006鐨勭涓棰樸?br> 鍦∕ars鏄熺悆涓婏紝姣忎釜Mars浜洪兘闅忚韓浣╁甫鐫涓涓茶兘閲忛」閾俱傚湪欏歸摼涓婃湁N棰楄兘閲忕彔銆傝兘閲忕彔鏄竴棰楁湁澶存爣璁頒笌灝炬爣璁扮殑鐝犲瓙錛岃繖浜涙爣璁板搴旂潃鏌愪釜姝f暣鏁般傚茍 涓旓紝瀵逛簬鐩擱偦鐨勪袱棰楃彔瀛愶紝鍓嶄竴棰楃彔瀛愮殑灝炬爣璁頒竴瀹氱瓑浜庡悗涓棰楃彔瀛愮殑澶存爣璁般傚洜涓哄彧鏈夎繖鏍鳳紝閫氳繃鍚哥洏錛堝惛鐩樻槸Mars浜哄惛鏀惰兘閲忕殑涓縐嶅櫒瀹橈級鐨勪綔鐢紝榪欎袱棰? 鐝犲瓙鎵嶈兘鑱氬悎鎴愪竴棰楃彔瀛愶紝鍚屾椂閲婃斁鍑哄彲浠ヨ鍚哥洏鍚告敹鐨勮兘閲忋傚鏋滃墠涓棰楄兘閲忕彔鐨勫ご鏍囪涓簃錛屽熬鏍囪涓簉錛屽悗涓棰楄兘閲忕彔鐨勫ご鏍囪涓簉錛屽熬鏍囪涓簄錛屽垯鑱氬悎鍚? 閲婃斁鐨勮兘閲忎負m*r*n錛圡ars鍗曚綅錛夛紝鏂頒駭鐢熺殑鐝犲瓙鐨勫ご鏍囪涓簃錛屽熬鏍囪涓簄銆?br> 闇瑕佹椂錛孧ars浜哄氨鐢ㄥ惛鐩樺す浣忕浉閭葷殑涓ら鐝犲瓙錛岄氳繃鑱氬悎寰楀埌鑳介噺錛岀洿鍒伴」閾句笂鍙墿涓嬩竴棰楃彔瀛愪負姝€傛樉鐒訛紝涓嶅悓鐨勮仛鍚堥『搴忓緱鍒扮殑鎬昏兘閲忔槸涓嶅悓鐨勶紝璇蜂綘璁捐涓涓仛鍚堥『搴忥紝浣夸竴涓查」閾鵑噴鏀懼嚭鐨勬昏兘閲忔渶澶с?br> 渚嬪錛氳N=4錛?棰楃彔瀛愮殑澶存爣璁頒笌灝炬爣璁頒緷嬈′負(2錛?) (3錛?) (5錛?0) (10錛?)銆傛垜浠敤璁板彿⊕琛ㄧず涓ら鐝犲瓙鐨勮仛鍚堟搷浣滐紝(j⊕k)琛ㄧず絎琷錛宬涓ら鐝犲瓙鑱氬悎鍚庢墍閲婃斁鐨勮兘閲忋傚垯絎?銆?涓ら鐝犲瓙鑱氬悎鍚庨噴鏀劇殑鑳介噺涓猴細
(4⊕1)=10*2*3=60銆?br> 榪欎竴涓查」閾懼彲浠ュ緱鍒版渶浼樺肩殑涓涓仛鍚堥『搴忔墍閲婃斁鐨勬昏兘閲忎負
((4⊕1)⊕2)⊕3錛?10*2*3+10*3*5+10*5*10=710銆?br> 銆愯緭鍏ユ枃浠躲?br> 杈撳叆鏂囦歡energy.in鐨勭涓琛屾槸涓涓鏁存暟N錛?≤N≤100錛夛紝琛ㄧず欏歸摼涓婄彔瀛愮殑涓暟銆傜浜岃鏄疦涓敤絀烘牸闅斿紑鐨勬鏁存暟錛屾墍鏈夌殑鏁板潎涓嶈秴榪? 1000銆傜i涓暟涓虹i棰楃彔瀛愮殑澶存爣璁幫紙1≤i≤N錛夛紝褰搃<N< span>鏃訛紝絎琲棰楃彔瀛愮殑灝炬爣璁板簲璇ョ瓑浜庣i+1棰楃彔瀛愮殑澶存爣璁般傜N棰楃彔瀛愮殑灝炬爣璁板簲璇ョ瓑浜庣1棰楃彔瀛愮殑澶存爣璁般?br> 鑷充簬鐝犲瓙鐨勯『搴忥紝浣犲彲浠ヨ繖鏍風‘瀹氾細灝嗛」閾炬斁鍒版闈笂錛屼笉瑕佸嚭鐜頒氦鍙夛紝闅忔剰鎸囧畾絎竴棰楃彔瀛愶紝鐒跺悗鎸夐『鏃墮拡鏂瑰悜紜畾鍏朵粬鐝犲瓙鐨勯『搴忋?br> 銆愯緭鍑烘枃浠躲?br> 杈撳嚭鏂囦歡energy.out鍙湁涓琛岋紝鏄竴涓鏁存暟E錛圗≤2.1*109錛夛紝涓轟竴涓渶浼樿仛鍚堥『搴忔墍閲婃斁鐨勬昏兘閲忋?br> 銆愯緭鍏ユ牱渚嬨?br> 4
2 3 5 10
銆愯緭鍑烘牱渚嬨?br> 710
#include <iostream>
using   namespace std;
#define MAX 100
int n;//鏁伴噺
int f[MAX][MAX];
int a[MAX];//a[i]涓虹i涓彔瀛愮殑鍊?/span>
int k,i,j,r,tmp;
int max(int x,int y)
{
if (x>y) return x;
return y;
}
int main()
{
cin 
>>n;
for (i=0;i<n;++i)
{
cin 
>>a[i];
}
for(i=2;i<=n;i++)
for(j=0;j<n;j++)
{
k
=(i+j)%n;
for(r=1;r<i;r++)
f[j][k]
=max(f[j][(j+r)%n]+f[(j+r)%n][k]+a[j]*a[(j+r)%n]*a[k],f[j][k]);
}
tmp
=-1;
for(i=0;i<n;i++)
if(f[i][i]>tmp)tmp=f[i][i];
cout
<<tmp<<endl;
system(
"pause");
return 0;
}



Bill Hsu 2008-07-23 15:37 鍙戣〃璇勮
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寰堝ソ鐨勯掓帹棰橈細閾虹鐮栧拰璧版牸瀛?/title><link>http://m.shnenglu.com/billhsu/archive/2008/07/23/56948.html</link><dc:creator>Bill Hsu</dc:creator><author>Bill Hsu</author><pubDate>Wed, 23 Jul 2008 07:37:00 GMT</pubDate><guid>http://m.shnenglu.com/billhsu/archive/2008/07/23/56948.html</guid><wfw:comment>http://m.shnenglu.com/billhsu/comments/56948.html</wfw:comment><comments>http://m.shnenglu.com/billhsu/archive/2008/07/23/56948.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.shnenglu.com/billhsu/comments/commentRss/56948.html</wfw:commentRss><trackback:ping>http://m.shnenglu.com/billhsu/services/trackbacks/56948.html</trackback:ping><description><![CDATA[<font color="#ff6600"><font color="#000000">榪欐槸</font></font>Matrix67.com鐨勯掓帹涓撻」璁粌鐨勯鐩紝鎰熻寰堝ソ銆?font color="#ff6600"><br> <br> *棰樹竴錛氱敤1 x 1鍜? x 2鐨勭鐮栦笉閲嶅彔鍦伴摵婊 x 3鐨勫湴鏉匡紝鍏辨湁澶氬皯縐嶆柟妗堬紵<br> 鏍蜂緥杈撳叆錛?<br> 鏍蜂緥杈撳嚭錛?</font><br> <br> 鍏堣涓涓猣[i]琛ㄧずi*3鐨勫湴鏉塊摵鐨勬柟娉?f[1]=1;f[2]=3;<br> i*3鐨勫湴鏉挎暟鏄繖鏍峰緱鍒扮殑錛?i-1)*3鐨勫湴鏉挎瘮i*3鐨勫湴鏉垮皯鐨勫湴鏂瑰叏閾轟笂1*1鐨勭摲鐮栵紝榪欐湁涓縐嶉摵娉曪紱<br> 鎴栬呭湪(i-2)*3鐨勫湴鏉挎瘮i*3鐨勫湴鏉垮皯鐨勫湴鏂歸摵涓?*2鐨勭摲鐮栧拰2涓?*1鐨勭摲鐮栵紝榪欐湁涓ょ閾烘硶錛?br> 鎵浠ュ緱鍒伴掓帹寮忥細<strong>f[i]=f[i-1]+2*f[i-2];</strong><br> <br> <font color="#ff6600"> *棰樹簩錛氫粠鍘熺偣鍑哄彂錛屼竴姝ュ彧鑳藉悜鍙寵蛋銆佸悜涓婅蛋鎴栧悜宸﹁蛋銆傛伆濂借蛋N姝ヤ笖涓嶇粡榪囧凡璧扮殑鐐瑰叡鏈夊灝戠璧版硶錛?br> 鏍蜂緥杈撳叆錛?<br> 鏍蜂緥杈撳嚭錛?</font><br> <br> 榪欎釜鎴戞病鎯沖嚭鏉ワ紝鐪嬮瑙f墠寮勬槑鐧姐傘?br> 鍏堣涓涓猣[i]琛ㄧず鎭板ソ璧癷姝ヤ笖涓嶇粡榪囧凡璧扮殑鐐?鍏辨湁鐨勮蛋娉曘?br> 濡傛灉鍚戜笂璧幫紝涓嶄細鍑虹幇緇忚繃宸茶蛋鐨勭偣錛涘鏋滃悜宸︽垨鍙籌紝涓婁竴姝ヤ笉鑳芥槸鍚戝彸鎴栧乏銆?br> <br> 寮曠敤棰樿В涓婄殑涓鍙ヨ瘽錛?*<br> <font color="#999999"> 榪欎竴姝ョ殑閫夋嫨鏁? 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