Crime and Place: A Longitudinal Examination of Street Segment Patterns in Vancouver, BC
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To test the generalizability of previous crime and place trajectory analysis research on a different geographic location, Vancouver BC, and using alternative methods.
A longitudinal analysis of a 16-year data set using the street segment as the unit of analysis. We use both the group-based trajectory model and a non-parametric cluster analysis technique termed k-means that does not require the same degree of assumptions as the group-based trajectory model.
The majority of street blocks in Vancouver evidence stable crime trends with a minority that reveal decreasing crime trends. The use of the k-means has a significant impact on the results of the analysis through a reduction in the number of classes, but the qualitative results are similar.
The qualitative results of previous crime and place trajectory analyses are confirmed. Though the different trajectory analysis methods generate similar results, the non-parametric k-means model does significantly change the results. As such, any data set that does not satisfy the assumptions of the group-based trajectory model should use an alternative such as k-means.
KeywordsCrime and place Trajectory analysis Spatial criminology
- Andruff H, Carraro N, Thompson A, Gaudreau P, Louvet B (2009) Latent class growth modelling: a tutorial. Tutor Quant Methods Psychol 5(1):11–24Google Scholar
- Brantingham PJ, Brantingham PL (1991) Environmental criminology. Waveland Press, Prospect HeightsGoogle Scholar
- Calinski T, Harabasz J (1974) A dendrite method for cluster analysis. Commun Stat 3(1):1–27Google Scholar
- Elragal A, El-Gendy N (2012) Trajectory data mining and the need for semantics. European, Mediterranean and Middle Easter Conference on Information Systems, June 7–8, Munich, GermanyGoogle Scholar
- Ouimet M (2002) Explaining the American and Canadian crime “drop” in the 1990s. Can J Criminol 44(1):33–50Google Scholar
- Weisburd D, Bruinsma GJN, Bernasco W (2009a) Units of analysis in geographic criminology: historical development, critical issues, and open questions. In: Weisburd D, Bernasco W, Bruinsma GJN (eds) Putting crime in its place: units of analysis in geographic criminology. Springer, New York, pp 3–31CrossRefGoogle Scholar