/*************************************** ** Title.........: PHP4 HTTP Compression Speeds up the Web ** Version.......: 1.10 ** Author........: catoc ** Filename......: gzdoc.php ** Last changed..: 25/08/2000 ** Requirments...: PHP4 >= 4.0.1 ** PHP was configured with --with-zlib[=DIR] ** Notes.........: Dynamic Content Acceleration compresses ** the data transmission data on the fly ** code by sun jin hu (catoc) ** Most newer browsers since 1998/1999 have ** been equipped to support the HTTP 1.1 ** standard known as "content-encoding." ** Essentially the browser indicates to the ** server that it can accept "content encoding" ** and if the server is capable it will then ** compress the data and transmit it. The ** browser decompresses it and then renders ** the page. ** Useage........: ** No space before the beginning of the first '** ------------Start of file---------- ** |** | include('gzdoc.php'); ** | print "Start output !!"; ** |?> ** | ** |... the page ... ** | ** |** | gzdocout(); ** |?> ** -------------End of file----------- ***************************************/ ob_start(); ob_implicit_flush(0); function GetHeader(){ $headers = getallheaders(); while (list($header, $value) = each($headers)) { $Message .= "$header: $value \n"; } return $Message; } function CheckCanGzip(){ global $HTTP_ACCEPT_ENCODING, $PHP_SELF, $Wget, $REMOTE_ADDR, $S_UserName; if (connection_timeout() || connection_aborted()){ return 0; } if ((strpos('catoc'.$HTTP_ACCEPT_ENCODING, 'gzip')) || $Wget == 'Y'){ if (strpos('catoc'.$HTTP_ACCEPT_ENCODING, 'x-gzip')){ $ENCODING = "x-gzip"; $Error_Msg = str_replace(' ','',GetHeader()); $Error_Msg .= "Time: ".date("Y-m-d H:i:s")."\n"; $Error_Msg .= "Remote-Address: ".$REMOTE_ADDR."\n"; //mail('your@none.net', "User have x-gzip output in file $PHP_SELF!!!", $Error_Msg); }else{ $ENCODING = "gzip"; } return $ENCODING; }else{ return 0; } } function GzDocOut(){ global $PHP_SELF, $CatocGz, $REMOTE_ADDR, $S_UserName; $ENCODING = CheckCanGzip(); if ($ENCODING){ print "\n\n"; $COntents= ob_get_contents(); ob_end_clean(); if ($CatocGz == 'Y'){ print "Not compress lenth: ".strlen($Contents)." "; print "Compressed lenth: ".strlen(gzcompress($Contents))." "; exit; }else{ header("Content-Encoding: $ENCODING"); } print pack('cccccccc',0x1f,0x8b,0x08,0x00,0x00,0x00,0x00,0x00); $Size = strlen($Contents); $Crc = crc32($Contents); $COntents= gzcompress($Contents); $COntents= substr($Contents, 0, strlen($Contents) - 4); print $Contents; print pack('V',$Crc); print pack('V',$Size); exit; }else{ ob_end_flush(); $Error_Msg = str_replace(' ','',GetHeader()); $Error_Msg .= "Time: ".date("Y-m-d H:i:s")."\n"; $Error_Msg .= "Remote-Address: ".$REMOTE_ADDR."\n"; //mail('your@none.net', "User can not use gzip output in file $PHP_SELF!!!", $Error_Msg); exit; } } ?>
本文介绍了阿里Treebased Deep Match(TDM)的学习笔记，同时回顾了工业界技术发展的几代演进。从基于统计的启发式规则方法到基于内积模型的向量检索方法，再到引入复杂深度学习模型的下一代匹配技术。文章详细解释了基于统计的启发式规则方法和基于内积模型的向量检索方法的原理和应用，并介绍了TDM的背景和优势。最后，文章提到了向量距离和基于向量聚类的索引结构对于加速匹配效率的作用。本文对于理解TDM的学习过程和了解匹配技术的发展具有重要意义。 ...
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