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Thoughts on Roth (2009)

Computers, Society, and Nature - 17 November 2017 - 4:50pm
I found this paper by Roth (2009) fascinating for multiple reasons. Firstly, my undergraduate thesis research involved making a map of sediment distribution in water ways, which I collected with a sonar and dGPS. There were multiple layers of uncertainty, mainly relating to error potential in the data collection (from the sonar and the dGPS), […]

OSullivan 2006: Critical GIS

Computers, Society, and Nature - 17 November 2017 - 3:31pm
I found this article on critical GIS quite interesting, and very relevant to our topics in GIS ranging from VGI to PPGIS. This paper acknowledges the large gap in the GIScience literature pertaining to social theory, which I find is a very important idea to keep in mind especially when assessing papers in GIS literature […]

O’Sullivan (2006) and Critical GIS

Computers, Society, and Nature - 17 November 2017 - 12:53pm
O’Sullivan (2006) begins by highlighting the divide between social theory and GIS that critical GIS attempts to bridge. This article provides a brief overview of the field of critical GIS with respect to the topics such as feminist GIS, PPGIS, privacy, and ethics. In my opinion, this article did an excellent job of exemplifying the […]

On Roth (2009) and Uncertainty

Computers, Society, and Nature - 17 November 2017 - 12:32pm
It was super interesting to learn about the differences between certain words that, outside of GISci/geography/mathematics, are often equivalent, like vagueness, ambiguity, etc. Knowing more about McEachern’s methodology would have definitely been helpful, but I’m looking forward to hearing more in Cameron’s talk! I thought it was weird that their central argument about uncertainty was […]

Some thoughts on Schuurman (2006)

Computers, Society, and Nature - 16 November 2017 - 10:11pm
I bring this up in many of the blog posts that I write, but it truly amazes me how much I learn about the inner workings of GIScience every week in this class. During his talk on critical GIS for GIS day, Dr. Wilson mentioned how too often critical GIS is a lecture tacked on […]

Optimal routes in GIS and emergency planning application (Dunn and Newton, 1992)

Computers, Society, and Nature - 13 November 2017 - 12:37am
This is an old paper presenting two algorithms (i.e., Dijkstra’s algorithm and out-of-kilter algorithm) for shortest path calculation. The different is that out-of-kilter algorithm can tackle the problems with flow control. This is useful in many situations such as transportation. And as the authors note, it is still far from the reality if we apply […]

VGI and Crowdsourcing Disaster Relief (Zook et al., 2010)

Computers, Society, and Nature - 12 November 2017 - 10:55pm
This paper mainly reviews the applications of four online mapping platforms in Haiti earthquake in 2010. It cannot be denied that the four platforms (i.e., CrisisCamp Haiti, OpenStreetMap, Ushahidi, GeoCommons) contribute to disaster relief in the earthquake. However, these technologies also bring problems remain to be discussed and further solved. Primarily, in the beginning parts […]

Zook et al. Haiti Relief & VGI

Computers, Society, and Nature - 12 November 2017 - 10:37pm
Volunteered Geographic information is tool used to consolidate knowledge where it is needed by those willing to offer their data and expertise. I feel comfortable arguing that it is strictly a tool; it create no new process or analysis of information but simply refers to consolidation of knowledge to complete various projects. The project in […]

Dunn and Newton (1992)

Computers, Society, and Nature - 12 November 2017 - 5:09pm
This paper discusses two prominent forms of network analysis: Dijkstra’s shortest path analysis, and off-kilter network analysis. Dijkstra’s algorithm presents a very simple form of network analysis by regarding the path from point A to point B through a series of nodes and arcs, which are accounted simply by length. Indeed, the authors make a […]

Network Analysis (Curtin 2007)

Computers, Society, and Nature - 12 November 2017 - 4:57pm
I found this article quite interesting, in both its recap of traditional Network analyses (i.e. Djikstra’s formula) as well as how the network features of GIS are some of GIScience’s earliest and most popular uses. I find the point on how Graph Theory is ultimately the thought holding this immense function together. On this train […]

Optimal routes in GIS and Emergency Planning, Dunn & Newton (1992)

Computers, Society, and Nature - 12 November 2017 - 4:12pm
Dunn and Newton (1992) examine the performance of two popular approaches to network analysis, Dijkstra’s and out-of-kilter algorithms, in the context of population evacuation. At the time of publication, it’s clear that the majority of network analysis research has been conducted by computer scientists and mathematicians. It’s interesting how historical conceptualizations of networks, which appear […]

VGI and Crowdsourcing Disaster Relief, Zook et al. (2010)

Computers, Society, and Nature - 12 November 2017 - 2:37pm
Zook et al. (2010) describe the ways in which crowdsourced VGI was operationalized through the 2010 earthquake in Haiti, with emphasis on the response organized by CrisisCamp Haiti, OpenStreetMap, Ushahidi, and GeoCommons. The authors refer to the principle that “given enough eyeballs, all bugs are shallow” in deference of the suitability of crowdsourced VGI. It’s […]

Thoughts on “Network Analysis in Geographic Information Science…” Curtis 2007

Computers, Society, and Nature - 12 November 2017 - 2:15pm
I came into this paper not knowing too much about network analysis, but having some general notion of it through its ubiquity in geographic and neuroscience literature (network distance, social networks, neural networks). I thought the paper did a good job of outlining the fundamentals of the field before progressing into geographic specificities and future […]

Thoughts on “Assuring the quality of…”Goodchild 2012

Computers, Society, and Nature - 12 November 2017 - 12:40pm
In discussing methods to assure the quality of VGI, Goodchild states that; “The degree to which such triage can be automated varies; in some cases it might be fully automatic, but in other cases it might require significant human intervention.” In VGI, the source of the data is human (as opposed to a scraping algorithm […]

Curtin (2013) – Networks in GIScience

Computers, Society, and Nature - 12 November 2017 - 3:42am
Curtin (2013) calls on the Geographic Information Science (GISc) community to seize the opportunities surrounding network analysis in geographic information systems (GIS). If GISc researchers and GIS developers can sufficiently integrate networks into existing theoretical frameworks, construct robust methods and design compatible softwares, they could exert a strong geographically-minded influence on the expansion of network […]

Goodchild and Li (2012) – Quality VGI

Computers, Society, and Nature - 12 November 2017 - 12:41am
Goodchild and Li (2012) outline crowd-sourcing, social and geographic approaches to quality assurance for volunteered geographic information (VGI). Representing an increasingly important resource for data acquisition, there is a need to create and interrogate the frameworks used to accept, query or reject instances of VGI on the basis of its accuracy, consistency and completeness. The […]

Curtin 2007: Network Analysis in GIS

Computers, Society, and Nature - 12 November 2017 - 12:06am
Network analysis is very useful for showing relationships between objects/agents/people and does not require some of the more formal geographic foundations. The result is the formation and growth of informal and natural linkages to create complex systems which can model how things are connected to each other. It essentially provides an alternative to geographic datum […]

Thoughts on Goodchild (2012)

Computers, Society, and Nature - 11 November 2017 - 2:57pm
Goodchild does a thorough job assessing the benefits and hindrances of his three methods for quality assurance of VGI. His first two, the crowd-sourcing approach and the social approach, he evaluates in comparison to Wikipedia contribution. Goodchild failed to specify a few important details of the social approach. Ideally Wikipedia contributions are made by users […]

Volunteered Geographic Information and Crowdsourcing Disaster Relief: A Case Study of the Haitian Earthquake, Zook et al. (2010)

Computers, Society, and Nature - 11 November 2017 - 10:57am
This article by Zook et al. (2010) talks about VGI specifically in the context of the 2010 Earthquake in Haiti, but more broadly discusses many of the issues presented in Goodchild and Li (2012) regarding the accuracy and validity VGI. I think Zook et al. (2010) do a good job of considering many aspects of […]

Network analysis in GIS (Curtin, 2007)

Computers, Society, and Nature - 10 November 2017 - 4:33pm
I found it very interesting how Curtin (2007) points out that network analysis is the only subfield of GISciences that has redefined a spatial reference system. Linear referencing, or using the network itself as a reference, is so intuitive that I had never thought of it as an alternative method of spatial referencing. I realize […]
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