Highly Divergent Profiles: For routing configurations that are not pre-calculated as common scenarios and whose costs vary too much from default configurations, the original A* algorithm might still be faster (and is often used as an automatic fallback).
換言之，單是業主的構成已可分為是否已補地價、需否繳交房貸。
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2-phase A* already uses many heuristics which don't always create an optimal route and still 5-10x slower.
分析师观点出现分化。Evercore ISI 认为，IBM 早已向客户提供多种现代化路径，主机客户仍因可靠性、吞吐量、安全性等因素坚持使用该平台，并重申对 IBM 的「跑赢大盘」评级。