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Mark suspicious transitions

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This commit is contained in:
Patrick Niklaus
2015-03-17 01:00:04 +01:00
parent 61dca4a35e
commit a372ade7ce
3 changed files with 15 additions and 3 deletions
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routing_algorithms/map_matching.hpp
+7 -2
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@@ -62,6 +62,9 @@ using SubMatchingList = std::vector<SubMatching>;
constexpr static const unsigned MAX_BROKEN_STATES = 6;
constexpr static const unsigned MAX_BROKEN_TIME = 60;
constexpr static const unsigned MAX_DISTANCE_DELTA = 500;
constexpr static const unsigned SUSPICIOUS_DISTANCE_DELTA = 100;
constexpr static const double default_beta = 10.0;
constexpr static const double default_sigma_z = 4.07;
}
@@ -168,6 +171,7 @@ class MapMatching final : public BasicRoutingInterface<DataFacadeT, MapMatching<
auto &current_viterbi = model.viterbi[t];
auto &current_pruned = model.pruned[t];
auto &current_suspicious = model.suspicious[t];
auto &current_parents = model.parents[t];
auto &current_lengths = model.path_lengths[t];
const auto &current_timestamps_list = candidates_list[t];
@@ -214,7 +218,7 @@ class MapMatching final : public BasicRoutingInterface<DataFacadeT, MapMatching<
const auto d_t = std::abs(network_distance - great_circle_distance);
// very low probability transition -> prune
if (d_t > 500)
if (d_t > osrm::matching::MAX_DISTANCE_DELTA)
{
continue;
}
@@ -232,6 +236,7 @@ class MapMatching final : public BasicRoutingInterface<DataFacadeT, MapMatching<
current_parents[s_prime] = std::make_pair(prev_unbroken_timestamp, s);
current_lengths[s_prime] = network_distance;
current_pruned[s_prime] = false;
current_suspicious[s_prime] = d_t > osrm::matching::SUSPICIOUS_DISTANCE_DELTA;
model.breakage[t] = false;
}
}
@@ -255,7 +260,7 @@ class MapMatching final : public BasicRoutingInterface<DataFacadeT, MapMatching<
}
}
matching_debug.set_viterbi(model.viterbi, model.pruned);
matching_debug.set_viterbi(model.viterbi, model.pruned, model.suspicious);
if (!prev_unbroken_timestamps.empty())
{