An extended Boolean retrieval strategy has previously been introduced in which the individual Boolean operators can be treated more or less strictly, depending on the perceived strength of association of the query terms. The extended Boolean system is illustrated by examples and evaluation output is used to demonstrate the effectiveness of the operations.
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机译:[n i Sub>] f(2 n Sup>)和[m i Sub>] f()的模拟信号位置参数的布尔求和方法f Σ Sub> [n i Sub>]&[m i Sub>]()中的部分乘积的2 n Sup>) 2 n Sup>)使用双布尔微分d / dn + Sup>和d / dn -中间和 Sup>以及位置格式中结果和[S i Sub>] f(2 n Sup>)的生成(俄语)