< 0cm 0pt?><B>题目</B><B><FONT face="Times New Roman">B</FONT></B><B>：构造一个检索系统</B><B>
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< 0cm 0pt? 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt; mso-line-height-alt:>以下给出的是某次学术会议所收到的<FONT face="Times New Roman">150</FONT>篇学术论文的关键词（<FONT face="Times New Roman">key words</FONT>），请以此为依据，将这些论文分类，并构造一个检索系统，使得当给出所要查找文献的一组关键词，例如（<FONT face="Times New Roman">eigenvalue problem</FONT>，<FONT face="Times New Roman">inverse</FONT>，<FONT face="Times New Roman">solvability</FONT>）或（<FONT face="Times New Roman">risk perceptions</FONT>，<FONT face="Times New Roman">mental models</FONT>，<FONT face="Times New Roman">bias</FONT>，<FONT face="Times New Roman">synergistic risk</FONT>），即可从上述<FONT face="Times New Roman">150</FONT>篇中找出有关的文章；所使用的方法应能适用于文献数量更大的情况。以下每行前的阿拉伯数字为文章编号，后面的英文单词为该文的关键词。除少量明显错误外，关键词（包括大小写）均原文照录。</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">1</FONT>．<FONT face="Times New Roman"> Drazin inverse</FONT>，<FONT face="Times New Roman">moore-penrose inverse</FONT>，<FONT face="Times New Roman">reverse order law</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">2</FONT>．<FONT face="Times New Roman"> Nonlinear approximation problems</FONT>，<FONT face="Times New Roman">applications</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">3</FONT>．<FONT face="Times New Roman"> Nonnested multilevel preconditioning method</FONT>，<FONT face="Times New Roman">Hermite element</FONT>，<FONT face="Times New Roman">Wilson element</FONT>，<FONT face="Times New Roman">Carey element</FONT>，<FONT face="Times New Roman">P1 element</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">4</FONT>．<FONT face="Times New Roman"> Chebyshev-Halley type methods</FONT>，<FONT face="Times New Roman">2-th </FONT>γ-<FONT face="Times New Roman">condition</FONT>，δ<FONT face="Times New Roman">criterion</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">5</FONT>．<FONT face="Times New Roman"> Convection-diffusion equations</FONT>，<FONT face="Times New Roman">upwind splitting scheme</FONT>，<FONT face="Times New Roman">maximum principle</FONT>，<FONT face="Times New Roman">stability and convergence</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">6</FONT>．<FONT face="Times New Roman"> Matrix</FONT>；<FONT face="Times New Roman">singular value</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">7</FONT>．<FONT face="Times New Roman"> Multisplitting</FONT>，<FONT face="Times New Roman">diagonal compensated reduction</FONT>，<FONT face="Times New Roman"> symmetric positive definite</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">8</FONT>．<FONT face="Times New Roman"> Superconvergence</FONT>，<FONT face="Times New Roman">mixed finite element</FONT>，<FONT face="Times New Roman">full discrete</FONT>，<FONT face="Times New Roman">compressible miscible displacement</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">9</FONT>．<FONT face="Times New Roman"> Ishikawa fixed point iteration</FONT>，<FONT face="Times New Roman">contractive mappings</FONT>，<FONT face="Times New Roman">normal linear space</FONT>，<FONT face="Times New Roman">T-stable</FONT>；</P>
<P 0cm 0pt? 0pt; mso-line-height-alt:><FONT face="Times New Roman">10</FONT>．<FONT face="Times New Roman"> Symmetric matrices</FONT>，<FONT face="Times New Roman">multiple linear systems</FONT>，<FONT face="Times New Roman">block Lanczos algorithm</FONT>，<FONT face="Times New Roman">block MINRES method</FONT>；</P></DIV>
<P>不会吧，这是你们学校的题？？？我去年暑假培训的时候就做过了，很Easy的一道训练题
<P>寒寒~~~~</P>
发表于 2004-5-19 07:37:43
>去年我们就练过检索的题，不过我们队没有做</P>
楼主
发表于 2004-5-20 01:49:50