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. Author manuscript; available in PMC: 2019 Oct 28.
Published in final edited form as: KDD. 2012 Aug;2012:262–270. doi: 10.1145/2339530.2339576

Figure 8:

Figure 8:

left) Normally the LB_Keogh envelope is built around the query (see also Figure 4.right), and the distance between C and the closer of {U,L} acts as a lower bound. right) However, we can reverse the roles such that the envelope is built around C and the distance between Q and the closer of {U,L} is the lower bound