Towards crowd-aware indoor path planning

Tiantian Liu, Huan Li, Hua Lu, Muhammad Aamir Cheema, Lidan Shou

Publikation: Bidrag til tidsskriftKonferenceartikelpeer review


Indoor venues accommodate many people who collectively form crowds. Such crowds in turn influence people’s routing choices, e.g., people may prefer to avoid crowded rooms when walking from A to B. This paper studies two types of crowd-aware indoor path planning queries. The Indoor Crowd-Aware Fastest Path Query (FPQ) finds a path with the shortest travel time in the presence of crowds, whereas the Indoor Least Crowded Path Query (LCPQ) finds a path encountering the least objects en route. To process the queries, we design a unified framework with three major components. First, an indoor crowd model organizes indoor topology and captures object flows between rooms. Second, a time-evolving population estimator derives room populations for a future timestamp to support crowd-aware routing cost computations in query processing. Third, two exact and two approximate query processing algorithms process each type of query. All algorithms are based on graph traversal over the indoor crowd model and use the same search framework with different strategies of updating the populations during the search process. All proposals are evaluated experimentally on synthetic and real data. The experimental results demonstrate the efficiency and scalability of our framework and query processing algorithms.

TidsskriftProceedings of the VLDB Endowment
Udgave nummer8
Sider (fra-til)1365-1377
Antal sider13
StatusUdgivet - 2021
Begivenhed47th International Conference on Very Large Data Bases, VLDB 2021 - Virtual, Online
Varighed: 16 aug. 202120 aug. 2021


Konference47th International Conference on Very Large Data Bases, VLDB 2021
ByVirtual, Online

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