BaseMatching¶
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class
leuvenmapmatching.matcher.base.BaseMatching(matcher: leuvenmapmatching.matcher.base.BaseMatcher, edge_m: leuvenmapmatching.util.segment.Segment, edge_o: leuvenmapmatching.util.segment.Segment, logprob=-inf, logprobema=-inf, logprobe=-inf, logprobne=-inf, dist_obs: float = 0.0, obs: int = 0, obs_ne: int = 0, prev: Optional[Set[BaseMatching]] = None, stop: bool = False, length: int = 1, delayed: int = 0, **_kwargs)[source]¶ Matching object that represents a node in the Viterbi lattice.
Parameters: - matcher – Reference to the Matcher used to generate this matching object.
- edge_m – Segment in the given graph (thus line between two nodes in the graph).
- edge_o – Segment in the given observations (thus line in between two observations).
- logprob – Log probability of this matching.
- logprobema – Exponential Mean Average of Log probability.
- logprobe – Emitting
- logprobne – Non-emitting
- dist_obs – Distance between map point and observation
- obs – Reference to path entry index (observation)
- obs_ne – Number of non-emitting states for this observation
- prev – Previous best matching objects
- stop – Stop after this matching (e.g. because probability is too low)
- length – Lenght of current matching sequence through lattice.
- delayed – This matching is temporarily stopped if >0 (e.g. to first explore better options).
- dist_m – Distance over graph
- dist_o – Distance over observations
- _kwargs –
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classmethod
first(logprob_init, edge_m, edge_o, matcher, dist_obs)[source]¶ Create an initial lattice Matching object.
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key¶ Key that indicates the node or edge, observation and non-emitting step. This is the unique key that is used in the lattice.
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next(edge_m: leuvenmapmatching.util.segment.Segment, edge_o: leuvenmapmatching.util.segment.Segment, obs: int = 0, obs_ne: int = 0)[source]¶ Create a next lattice Matching object with this Matching object as the previous one in the lattice.
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prune_value¶ Pruning the lattice (e.g. to delay) is based on this key.
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shortkey¶ Key that indicates the node or edge. Irrespective of the current observation.