TY  - JOUR
IS  - 6
N2  - Identifying the abnormally high-risk regions in a spatiotemporal space that contains an unexpected disease count is helpful to conduct surveillance and implement control strategies. The EigenSpot algorithm has been recently proposed for detecting space-time disease clusters of arbitrary shapes with no restriction on the distribution and quality of the data, and has shown some promising advantages over the state-of-the-art methods. However, the main problem with the EigenSpot method is that it cannot be adapted to detect more than one spatiotemporal hotspot. This is an important limitation, since, in reality, we may have multiple hotspots, sometimes at the same level of importance. We propose an extension of the EigenSpot algorithm, called Multi-EigenSpot that is able to handle multiple hotspots by iteratively removing previously detected hotspots and re-running the algorithm until no more hotspots are found. In addition, a visualization tool (heatmap) has been linked to the proposed algorithm to visualize multiple clusters with different colors. We evaluated the proposed method using the monthly data on measles cases in Khyber-Pakhtunkhwa, Pakistan (Jan 2016- Dec 2016), and the efficiency was compared with the state-of-the-art methods: EigenSpot and Space-time scan statistic (SaTScan). The results showed the effectiveness of the proposed method for detecting multiple clusters in a spatiotemporal space. © 2018 Ullah et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
N1  - cited By 4
ID  - scholars10258
TI  - An eigenspace approach for detecting multiple space-time disease clusters: Application to measles hotspots detection in khyber-pakhtunkhwa, Pakistan
KW  - algorithm; Article; case study; controlled study; disease classification; disease surveillance; health survey; human; information processing; measles; Pakistan; population research; risk factor; algorithm; measles; season; spatiotemporal analysis
KW  -  Algorithms; Humans; Measles; Pakistan; Seasons; Space-Time Clustering
AV  - none
A1  - Ullah, S.
A1  - Daud, H.
A1  - Dass, S.C.
A1  - Hadi, F.-T.
A1  - Khalil, A.
JF  - PLoS ONE
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048760498&doi=10.1371%2fjournal.pone.0199176&partnerID=40&md5=5cb204931ec13aab8a6ea5989bf9795e
VL  - 13
Y1  - 2018///
PB  - Public Library of Science
SN  - 19326203
ER  -