look ahead基本解釋
動(dòng)詞計(jì)劃未來(lái)，預(yù)測(cè)未來(lái); 預(yù)取
look ahead網(wǎng)絡(luò)解釋
1. 先行：針對(duì)以往群體智能聚類(lèi)算法中分類(lèi)錯(cuò)誤率較高、算法運(yùn)行時(shí)間較長(zhǎng)等不足,提出記憶體方法和基于密度的先行(lookahead)策略. 用人工數(shù)據(jù)集和真實(shí)數(shù)據(jù)集進(jìn)行實(shí)驗(yàn),將實(shí)驗(yàn)結(jié)果進(jìn)行比較分析. 分析結(jié)果表明,基于密度的啟發(fā)性群體智能聚類(lèi)算法能夠得到令人滿意的聚類(lèi)結(jié)果,
2. 展望：關(guān)于公因子的問(wèn)題,可以改寫(xiě)算法(提取公因子),也可以通過(guò)展望(lookahead)更多符號(hào)的方法來(lái)解決. 但是因?yàn)閖avacc擴(kuò)展了經(jīng)典的BNF,因此它面臨更多的問(wèn)題. 總之,當(dāng)在編譯時(shí)碰到?jīng)_突問(wèn)題時(shí),就說(shuō)到了一個(gè)choice point.
look ahead詞典解釋
1. 展望未來(lái)；規(guī)劃未來(lái)
If you look ahead, you think about what is going to happen in the future and perhaps make plans for the future.
e.g. I'm trying to lookahead at what might happen and be ready to handle it.
我打算未雨綢繆，作好應(yīng)對(duì)準(zhǔn)備。