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NeoGeocoding?

21 March 2013 - 12:11pm
The article of Roongpiboonsopit and Karimi highlights the fact that ubiquitous mapping and new practices facilitated by the technology allow everybody to geocode data without really knowing what is happening ‘behind’ the geocoder tools (Geocoder.us, MapQuest, Google, MapPoint, and Yahoo!). Coding is defined in the article as “applying a rule for converting a piece of [...]

Geocoding

21 March 2013 - 10:01am
Goldberg et al. provides an overview of geocoding and touches on several aspects that relate to GISci. For instance, the authors elaborate on how the evolution of the reference dataset has allowed for more complex and resourceful queries to geocode postal codes, landmarks, buildings and so on. The underlying cause of the shift has been [...]

Putting Geography on the Map

20 March 2013 - 9:05pm
Roongpiboonsopit and Karimi’s 2010 comparison study of five free online geocoders is an example of an important process in weeding out poor geocoders and creating one that works accurately and reliably. Considering geocoding is at the heart of many GIS applications, especially those involving the Geoweb, spatial accuracy is key. The authors used empirical analysis [...]

Geocoding Errors

19 March 2013 - 1:24am
Goldberg et al.’s article “ From Text to Geographic Coordinates: The Current State of Geocoding” demonstrates an in-depth view of recent geocoding, its process and the errors involved in geocoding. That said, I wish that more discussed on the errors occurring in geocoding resulting from database managers “correcting” system errors in coding. In essence, when an [...]

Geocoding and public health

18 March 2013 - 7:22pm
I think Geocoding is one of the most central issues in GIS (science and systems) and yet is probably one of the less well understood issues for lay people and non-experts who use spatial data (along with map projections). As the authors mentioned, there has been research in public health and epidemiology on the accuracy [...]

Business and LBS

15 March 2013 - 11:27am
Before I read this paper, I was not very familiar with the concept of location based services. There are of course lots of commercial uses of geographic information but this direct discussion of spatial information translating directly into business is very interesting and not something I had thought about. This subject seems like another interesting [...]

Time geography

15 March 2013 - 11:20am
Even though this article is not new, it seems like the field has not advanced incredibly since it was written. Being able to efficiently and effectively store, retrieve and particularly visualize the temporal aspects of data in GIS continues to be a major limitation of spatial analysis. In spatial statistics, models that account for space-time [...]

LBS and corporations’ interests

15 March 2013 - 10:56am
I feel like the LBS development are focused on marketing purposes and privacy issues might be underestimated in this domain. Profit is a major interest and priority before individual’s privacy concerns. The article of Rao and Minakakis shows that the way that LBS can be profitable and worth the developments in this field is by [...]

Challenges and temporal GIS

15 March 2013 - 10:55am
The article of Langran et al. is dated but it represent an important development in the field of temporal GIS. The space-time composite model breaks from early snapshot models that were ineffective in representing spatio-temporal complexities. The space-time composite model proposed by Langran et al. takes into consideration both database time and world time. Nonetheless, [...]

Location Based Surveillance

15 March 2013 - 1:07am
Steinfield’s ca. 2003 paper reviews the current state and future prospects of Location Based Services—electronic applications which make use of the user’s location to communicate relevant information or take contextual actions. The development that got Steinfield discussing LBS was the increasing ubiquity of mobile phones at the turn of the millennium, which seemed to offer [...]

What will it take for LBS to take the next step?

15 March 2013 - 12:09am
Location Based Services can provide many benefits to consumers. Generally, it involves answering 2 questions: how do I get to where I want to go? And once there, what kind of personalized services can be offered? One of the major issues is identifying precisely where someone is, in order to be able to offer them [...]

There Should be an App for That

14 March 2013 - 10:18pm
First of all, expectations are always going to fall either short or long of reality. Rarely, if ever, does anyone get it spot on. Consider the predictions published in 1899 of what the year 2000 would look like (http://gizmodo.com/5939765/what-people-in-1899-thought-the-year-2000-would-look-like). Aside from the fact that everyone is wearing shoes, and heavier-than-air human flight has been developed [...]

Temporal Topology

14 March 2013 - 9:56pm
Location, size, and proximity are just three of many characteristics a feature can be attributed. As complex as they are, the topology and relationships are absolute. Before reading this article I thought it was just a matter of applying the concept of a temporal relationship in a similar manner. I still believe that this is [...]

Temporal GIS do we go back, or only forward?

14 March 2013 - 9:30pm
Marceau et al.’s paper on temporal topology in GIS Databases outlines the faults with temporal GIS which seems echoes Marceau’s earlier paper on spatial GIS and its faults within social and natural sciences. In both temporal and spatial GIS, as I compare the two papers, the resolution seems to be one of the main issues [...]

Location Based Services

14 March 2013 - 9:03pm
Steinfield’s article on the development of LBS is a nice summation of the technology used, potential applications, and a few of the issues that arise out of LBS services such as privacy. Reoccurring themes that we’ve seen relating to GISci issues definitely include privacy and ethical issues. It’s interesting that a regulation created as a [...]

Like a Memory Lost in Time

14 March 2013 - 8:00pm
Langran and Chrisman (1988) covered various conceptualizations of temporal GIS, stressing temporal topology and the need to visualize temporal structure, trap errors, and minimize data storage requirements. In a topic based on the conceptualization of abstract and multidimensional notions, it was enormously useful for the authors to include simple visualizations of the conceptualizations of time, [...]

Try and Find Me

14 March 2013 - 7:55pm
Rao and Minakakis wrote on the current (in 2004) and future state of location-based services (LBS). In their article, they touched on the growing interest in LBS, the requirements for growth, and the types of LBS. While 2004 was not too long ago, nine years is eons for modern technology, and I’m curious how much [...]

A Temporal MAUP

14 March 2013 - 7:18pm
Marceau, Guindon, Bruel, and Marois outline two major problems with the temporal model in GIS: the lack of temporal topology, and the sampling interval. The temporal interval determines the scale at which the geographic phenomenon will be studied, and consequently “may affect the perception of the pattern dynamics of the phenomenon” (p. 4). Ultimately, this [...]

Moving Beyond Snapshots

14 March 2013 - 7:03pm
Marceau et al set out to develop temporal database and analysis functionality in a GIS environment.  They are motivated to do this by the inadequacies of current GIS software to deal with temporal elements, which results in a de facto spatiotemporal analysis approach known as the “snapshot model”: limited to knowledge about specific moments in [...]

LBS: Ideas lost to time and tech advances

14 March 2013 - 6:02pm
Charles Steinfield’s article, “the development of Location based Services…” is a great summation of location based services (LBS) in the first half of the last decade, however most of the trends and technologies have changed. For instance, the mention of growing “802.11b” wifi networks have gone the way of beta cassettes, mini-disc players and HD-DVDs [...]