| 词汇 | backtracking |
| 释义 | backtracking present participle ofbacktrack backtrack verb[ I ] uk /ˈbæk.træk/ us /ˈbæk.træk/ backtrackverb[I] (GO BACK)to go back along a path that you have just followed: 走回头路，原路返回 We went the wrong way and had to backtrack till we got to the right turning.我们走错了路，只好原路返回，直到找到正确的拐弯处。 Returning to a place call call back come come back darken double back get back go back huddled join reappear reappearance refoul refoulement regain rejoin return revenant turn (someone) back way back backtrackverb[I] (CHANGE OPINION)to say that you did not mean something you said earlier or say that you have changed your opinion: 收回说法;改变意见 [ + speech ]"All right," he backtracked, "It's possible that I was mistaken."“好吧，”他改变了态度说道：“我可能是错了。” The officers were forced to backtrack on their statements.这些军官被迫收回他们的声明。 She refused to backtrack from her criticisms of the proposal.她拒绝收回对该提案的批评。 Denying & contradicting abnegate abnegation apparently breath bubble burst someone's bubbleidiom contradictorily counter-argue debunk dispute I'm a Dutchmanidiom myth-buster myth-busting non-acceptance non-recognition nonsense oxymoron recant refute speak for yourselfidiom Examples of backtrackingbacktracking In English, many past and present participles of verbs can be used as adjectives. Some of these examples may show the adjective use. This enables one to start the design stage on a consistent version of the system, which considerably reduces the backtracking process. When compiling a set of deterministic rules with some non-deterministic matching conditions, some choice points are needed to handle the backtracking. We explain the modifications needed for backtracking, trailing, variable binding and tidy trail in this new layout. A solution for this problem is to remove all dangerous entries (those referencing untagged heap cells) from the remembered sets upon backtracking. This approach is optimal for frequent variable-variable bindings, and where dereferencing is more frequent than backtracking. Section 5 introduces conflict sets and our generic search algorithm, and recasts backtracking search in that framework. The presence of the all/2 collector avoids the need for backtracking over multiple remote answers. This is best done on the heap since backtracking permits the space to be reclaimed when the substitution itself becomes redundant. Chapter 6 improves naive backtracking using look-back schemes for backjumping and learning. The code in figure 5 uses trees of states to implement a backtracking solver, btsolver0, using a lazy pipeline. Upon backtracking, it is possible that heap space can be recovered in the aging space and even in the old generation through instant reclaiming. Backtracking points were represented by pointers into this list, and backtracking to remove bindings involved discarding the list down to the pointer. To deal with non-determinism a rich language of "strategy annotations" has been devised to allow choice in a broad space of search and backtracking strategies. When such nodes are found within a negation the search typically stops and backtracking is initiated at the higher level (where the negation was called). Therefore, homology is a useful trait to search for, and one that can be handled by backtracking along paths. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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