Archive for January, 2013

Critical Toolmaking and Arguments on the Internet

Thursday, January 17th, 2013

Wright, Goodchild and Proctor review debates around the conceptualization of GIS as a tool or as a science on a prominent GIS listserv in 1993. In so doing, they unpack the debates and situate possible conceptualizations of GIS on a continuum between tool and science, rather than as a simple dualism.  The additional point on the continuum they introduce is the conceptualization of GIS as toolmaking, analogous to engineering being situated somewhere between the pure and applied sciences.

The article concludes that only the conceptualization of GIS as science is sufficient to be considered science, and thus the only way GIS in and of itself might attain academic credibility. However, it would seem as though the authors failed to anticipate the rise of critical GIS as a field of study.  When they touched on “the scope of research [being] determined not by the tool’s value to geographers, but rather by the multifarious applications of GIS, to include all of the societal effects of the computerization of geographic information” (p. 356), I thought immediately of issues such as VGI,  loaction-based services and geosurveillance—all burgeoning GIS research topics today.  However, Wright at al never come back to these more qualitative opportunities for ‘doing GIS’. Perhaps they overlook this potential because it doesn’t quite fit into their continuum: critical GIS involves GIS gaining academic credence not within science (whether pure or applied), but by way of the humanities and social sciences.

The article also offers an interesting insight into the pitfalls of conducting debates over the medium of the internet, from the perspective of the 1990s. While the GIS-L debates of 1993 do not remotely approach the caliber of trolling and talking past one another typical of political debates on the internet today, Wright et al’s analysis on page 348 does a good job of anticipating the rhetorical impacts of the internet’s shift into widespread use.

-FischbobGeo

People-Centered Geographic Information Science

Thursday, January 17th, 2013

The need for a people-based representation of space brought up by Miller is increasingly relevant as we continue in an age where distances are shrinking and populations become more mobile. It is no doubt that space has become less of an obstacle and time has become a larger constraint on our lives. Thus the need for more dynamic methods and models of representing the needs of populations in terms of transportation and urban resources is present. These are of course extremely complex and the sheer amount of information involved leads to a great deal of time and effort spent sifting through incoming data. I believe that this is where the difficulty lies. With techniques such as twitter scraping and SQL, there are ways to get a hold of this kind of data. However, what follows is the hard part. How do we decide what data is important? Does one space or group of people more relevant than another?
I understand that we can limit this by means of things like socioeconomic and neighborhood grouping, however I believe this inevitably leads to the kinds of generalizations that people-based GIS is trying to get away from. By attempting to choose which incoming information is deemed important or not, certain space-time activities will be ignored. This is, of course, combined with the gaps created by the digital divide can potentially lead to the marginalization of certain groups.

Overall, this movement to a people-based GIS will definitely lead to nuanced information and practices. Theoretically, transportation systems will become more efficient and become tailored more to the actual day-to-day activities of individuals in a city. It will just require a lot of work and a style of thinking never done before.

GEOGMan15

Should we really “define” GIS?

Thursday, January 17th, 2013

Although written 15 years ago in 1997, (which seems like an eternity when considering the expansion of the World Wide Web) this paper by Wright et al. raises some excellent considerations when thinking about how we perceive GIS. GIS is a unique field in the fact that it is so closely knit to a “conventional” discipline (Geography), yet seems to now have its own place in academia. Prior to the writing of this paper (and others by Goodchild), GIS was widely considered as a useful tool to display or visualize findings across many spatially relevant disciplines, and nothing really more. While the view of GIS as a science existed among some of those heavily involved in the field, I think that it was less popular view as it is now. Today, more than ever, GIS has become more accepted as a discipline on its own rather than a vehicle for displaying data.
However, I believe Wright et al. drives the point home in the conclusion when they call for a need to shift away from ‘”black and white’ boxes of description” and move towards a more continuous definition of how GIS should be perceived. While I understand that defining GIS as a science eventually leads to more focus (and funding!) on the field, I cannot see the benefits in trying to encompass a set of rules in order to understand GIS as a science. The reason GIS is unique as a field is because of its versatility and it’s increasing power to contribute to societies in the world today. As of 2013, one cannot deny the amount of discourse concerning the scientific theories, models and analyses involved with the creation of various GIS. The paper by Harvey Miller clearly points this out, as we can no longer look at GIS as a purely objective tool but something that must be developed in line with a specific research question. However, being able to take the entire discipline and invoke rules to try and mimic conventional sciences will not work for GIS. Each individual project will have its own set of scientific methods involving a range of academic disciplines.

GEOGMan15

The People in Geographic Information Science

Thursday, January 17th, 2013

Miller places dominate GIS practices within the realm of placed-based methods based off of a past where technology and theory began to intersect. In a finite world, limitations are place on an individual to appropriate how much time and resource is spent on an activity. Their decisions are ultimately based on their socio-economic condition. Because of this, a people-based GIS should complement placed-based GIS better understand urban systems. This was a great article that introduces the reader to time geography and activity theory. For me, it made me think about how a person is placed in a particular location because of their socio-economic condition, and now how a person is somewhere with x,y,z conditions (which was intuitive for me at first. Consider looking at a map, where a point represents a person and an attribute table holds their socio-economic profile. To me, the visualization on the screen associates a person to a particular location, and not attributes that bind them to that location.).

While reading the data collection techniques of STA and how new technologies can increasingly improve the cost, rigor, and time associated with data collection, a reoccurring thought was, how can this be applied to the marginalized population where access to mobile devices, computers or knowledge of the technology is limited? How can technology improve their situation in such a way researchers can easily collect and study their space-time activities to offer a policy prescription to remedy this? I think it’s key to recognize our own positionality when we consider how IT has “shrunk” the world for some in a positive way, empowering them to access more information, knowledge while decreasing travel time. On the flip side, it has shrunk the world for others in terms of limiting access and resources to improve their livelihoods.

-tranv

GIS, Science or Tool? A continuum

Thursday, January 17th, 2013

This article nicely lays out 3 distinct arguments where scholars have argued GIS to be a tool, toolmaker and science. GIS as a tool and toolmaker is easier to grasp, while GIScience was much harder for me to wrap my mind around. At the beginning of this paper, my crude understanding of GIS as a science is if some form of rigorous scientific method can be applied to it (form a hypothesis, test a hypothesis, evaluate the results to improve our knowledge about the subject matter) then it may be considered a science. Here, the definition of science also becomes important where some have a vested interest to label GIS as a science to legitimize their work in an academic setting whereas others believe that labeling GIS as a tool doesn’t give it the credit it deserves when it can enact change and increase understanding. By the end of the paper, geographic information science is describe to be “concerned with geographic concepts, primitive elements used to describe, analyze, model, reason about, and make decisions on phenomena distributed on the surface of the earth” (Wright et al., 1997, 357). Does this mean that the “science” involved refers to the decisions we make in how we define categories, what we chose model (thus what we chose to omit), and theorize the particular subject matter?

My experience in GIS falls into the toolbox category – to visualize a certain phenomenon in space. In my opinion, depending on how far you go in your studies, or how you apply the software defines you view of GIS as a tool, science or somewhere in-between. For a technician mapping out underground pipelines, GIS is a tool, whereas a scholar studying the use of GIS by various social groups can be viewed as a science. No matter how GIS is viewed, few people will doubt the contribution it has made in our understanding of spatial phenomenon.

-tranv

Miller 2001

Thursday, January 17th, 2013

In detecting outbreaks of infectious disease, the time model has very much preceded the space model. Most public health agencies rely very heavily on time series of traditional and maybe syndromic health data (laboratory confirmed cases of illnesses as well as secondary data such as emergency department visits), looking for atypical temporal patterns. But few integrate spatial information (even fewer beyond running SatScan), even though statisticians and geographers have shown through research and simulations that outbreaks could be detected with improved timeliness and sensitivity/specificity (fewer false positives or false negatives) if spatial information were included. Many of the concepts in this paper are very relevant to outbreak detection, such as idea of a space-time path in a “lifestyle.” Either way, incorporating both space and time into analysis/research seems to be a real challenge in computational power, in model complexity, and in visualization.  Even though this paper was written over ten years ago and made some very concrete suggestions for moving forward in time geography, I’m not sure how far we’ve come.

-Kathryn

Wright 1997

Thursday, January 17th, 2013

I believe GIS is a field of study, similar to (and related to) statistics, and the authors draw this analogy several times in the paper as well. What often inspires the question “science vs. tool” is the lack of substantive application – the associated methods can be applied in a variety of disciplines. But like statistics, GIS has theoretical underpinnings that are understood by experts, and practical applications that can be used (and misused) by experts and nonexperts in various fields.

One interesting point was a comment by someone in the listserve who compared GIS to statistical software – that using the statistical software isn’t “doing science” either. This is a good example and I believe the author of this comment was actually making the opposite point he or she intended to. Using statistical software does not make you a statistician, and using GIS does not make you a scientist or a GIS expert.  But the respective experts (statisticians; GIS-focused geographers or computer scientists), while they may not themselves be the architects of this software, often use it, and have a strong understanding of the theoretical underpinnings it uses to perform analysis.

When someone is “doing GIS”, this doesn’t not automatically make their work scientific, but methodological advancements from experts in GIS are scientific, and I would say that experts applying the methods in novel applications is often scientific. Again, like statistics, sometimes it seems like GIS is used to legitimize research, and this may be a symptom of a societal obsession with ranking academic discipline worth by how “scientific” or “hard” it is. When a research paper overemphasizes the use of GIS, attempting to add legitimacy, it is similar to using an unnecessarily complex statistical model in order to make up for poor quality data or add a false sense of achievement to a work. I see that an issue in academia rather than an issue specific to GIS.

[Side note: interesting that when this paper was written (1997) the authors claimed that academics in general are not well set up to create reliable software with a couple exceptions. In 2013 I’m sure we can all think of many of examples that show this is no longer the case! The creators of R; Luc Anselin; Andrew Gelman…many more]

-Kathryn

 

GIS: tool or science? Does it really matter?

Thursday, January 17th, 2013

Wright et als’ article “GIS: tool or science?” takes as a basis of theory a 1993 listserv discussion grappling with the question: is GIS a tool, or a science? While the paper is generally a summary piece, it moves some interesting theory with regards to the subject. After reading, however, one is left wondering, beyond practical funding concerns, whether the discussion is ultimately fruitful, and if in defining a strictly demarcated tool or science, we are losing something along the way.

The authors identify three major strands of classification for GIS within the cited discussion: tool, toolmaking and science. I guess the problem for me with this debate is that I don’t think that anybody is really wrong. I think GIS can be a tool, toolmaking and/or science. The categories don’t necessarily have to be mutually exclusive. While the drive to classify is strong and understandable, it often means a loss of nuance, or an effacing of important aspects of a discipline. In rejecting GIS as a tool (or toolmaking, or science), we lose some of the unique capabilities produced by that classification.

Unrelatedly, I find the integration of these more casual (and frankly pretty snarky) conversations in scholarship to be interesting (it feels like a bending of disciplines and spheres!)  The brief opening note on new systems of citation caught my eye, because I think that the wealth of information on the internet (doubtless important to GIS however we conceive of it) is posing new challenges by producing important theory and content that we’re having to learn very swiftly how to integrate into formal academia. The introduction to academic work of informal discussions is also an important step in bridging the gap between different modes of scholarship and technology. Importantly, it may be more accessible to those people who may not be pursuing a formal education or may lack a background in theory. Personally, I respond well to forms of learning that occur outside of traditional lecturing and incorporate multiple voices, so I found the transcript section of the article useful (and also pretty funny).

Wyatt

Changes in thought and perceptions of science, tools and GIS

Thursday, January 17th, 2013

Wright, Goodchild, and  Proctor in their article “GIS: Tool or Science?” outline the varying cases for GIS being a tool or a science.  The article may point to opening our definition of science and shifting how science is quantified by results to a broader definition of applied and practical use. However, one can ask how does one’s perception and thought on, what is a tool? and what is a science? influence how GIS is viewed, and thus how it is defined. Can GIS not be both a tool and a science? Does not every science include tools and equations to understand the variability in nature and our world, and does not every tool rely on science to have a use? I believe GIS is a tool and a science. One just has to think of mathematics or physics where equations originally developed as a tool to answer a question have themselves become a science. For example, quantum mechanics where once only considered a tool to understand the atom but has since become a field of science and scientific research, although quantum mechanics can still be a tool. Any tool can become a science and any science can become a tool.

Science is derived in latin from the word for knowledge, therefore it can be considered as the pursuit and modification of knowledge and is that   not what GIS allow people to accomplish through the gathering and modification of information. Yet GIS is still a tool because it offers a means to an end (i.e. it allow a person to modify data to get a result). The way a person thinks, influences how they may perceive GIS. For instance if GIS is a means to an end, it is a tool, like a surveyor’s station to a surveyor who is plotting a map. Oppositely, if GIS is used to gather and study, it is a science, like a surveyor’s station to a geologist who is gathering data to understand the relationships of rocks to a point.  At present, technology and science are at a crux where both are intertwined, yet have the same definitions given centuries ago and are perceived in that same old fashion. Maybe it is time for a new definition to be created, as development in our world advances the tools and sciences we do as humans,where to integrate both GIS as a means and an end together.

C_N_Cycles

Toolbox vs. Test Tube

Thursday, January 17th, 2013

Wright’s investigation into the nature of GIS is like the International Baccalaureates course, Theory of Knowledge; it poses more questions than it provides answers. In response to the title of the paper, my initial reaction was that it was a clear cut, hands down, tool. From my own experience, whenever people asked what I wanted to do I would say, without hesitation, “mapping.” I have since been told that GIS is far more than mapping, but until now that is all I have ever used it for. Eventually, most conversations would turn to, “what is GIS?” Until recently, my response was always, “It’s a toolbox. Much like a hammer is to a toolbox, as Clip, and Collapse Dual to Centerline are to ArcGIS. The tools are self evident, it’s just a matter of finding what you need in the shed.” That, however, is not the case.

My experience with GIS is marginal, at best. I am an end user, who contributes little in return to the further development of the software. Therefore, for my purposes it is a tool. For others, as is seen in the informal survey conducted on GIS-L, it has a much broader range of uses. These uses, however, are laden with subjectivity. Wright points out that fields considered a science are seen as more legitimate. The sequence of the paper gives “GIS as a science” the last say. The conclusion does not overtly state it, but from the point of view of Wright et al. they aim to promote GIS as a means of acquiring legitimacy. In time, much like Computer Science, it is likely that GIS will be given the same weight. It would serve GIS, however, if it spread to more than just “phenomena on the Earth’s surface.” Until it digs deeper, it will only be scratching the surface.

AMac

The Science of Doing GIS

Thursday, January 17th, 2013

Wright, Goodchild, and Proctor’s article explores whether GIS (as it was known in 1997) is a tool or a science. This is a question that isn’t easily answered, as evidenced by the article’s inability to answer it. However, the article does illustrate central themes of the argument via a synthesis of crowdsourced answers. This article rose a lot of questions for me and eventually answered them. That being said, I would rearrange the format– putting the why-do-we-care bit at the beginning, followed by the definition of science, and then jumping into the GIS-L discussion would provide greater perspective to the entire article.

Wright et al. distinguish three positions on GIS: GIS as a tool, GIS as toolmaking, and GIS as a science. Interestingly, throughout the article there are ideas implying that GIS can be all three simultaneously. One GIS-L participant noted, “the answer depends on who is involved,” (p. 350) and consequently what they are doing. It follows that most students regard GIS as a tool whereas professors see it as a science (let’s ignore the article’s GIS = science = academic validity = funding idea)– and I don’t think either are wrong. But while the article places GIS on a continuum, I’ll place it on a circle to bring tool and science closer together and attempt to crudely illustrate some kind of cycle.
  • Start with science: science talks about its use as a method for developing spatial theories and dealing with research issues.  Research issues are inherent in GIS: uncertainty, representation choice, analysis methodology, etc.
  • Then tool: These issues are in the software and are issues that users (should) recognize when using GIS as a tool for problem solving.
  • Then toolmaking: These are considered by developers and the like, and GIS undergoes toolmaking to make it easier to answer these issues. Toolmakers critically analyze and reflect; evaluating the tool on how well it does its job– which is, essentially, digitally implementing “all geographic concepts and procedures,” (p. 357) and how best to do this–bringing us back to the science and methodology.
The article concludes with, “GIS appears not to constrain its uses to any epistemological stance,” (p. 359) and essentially comes full-circle.

Wright, D. J., M. F. Goodchild, and J. D. Proctor. (1997). Demystifying the persistent abiguity of GIS as “tool” versus “science”. Annals of the Association of American Geographers, 87(2) pp. 346–362.

-sidewalkballet

Analogies

Thursday, January 17th, 2013

McNoleg speaks of the Tessallati and the Vectules, living in a prehistoric Europe (but still subjected to the hazards of global warming). I had to read the article four or five or six times to pick out the important parts, discard the superfluous parts, and synthesize the general gist of the article.

We know he’s talking about conventional geospatial data models. It’s obvious that the Tessellati are the inventors of the raster data model and the Vectules are the inventors of the vector data model. I’m going to attempt to unpack the analogies McNoleg wittingly and creatively puts together.

The Tessellati need to fit the maximum number of individual pig cells on their small amount of land. They want a series of geometric shapes with no overlaps or gaps (a tessellation)–they want a raster grid of regulated pixels. This system is shortlived for a reason akin to too much storage (I think). McNoleg suggests to diversify your diet–diversify your data types–insinuating that you can’t do everything you’ll ever want to do using a raster grid alone (or eating only pig products).

The Vectules are under threat of flooding and can’t swim, so they have to climb trees. Because they are climbing trees, we know where they will end up and where they are in relation to other things. Not being able to swim means they can’t float around wherever they want–and the trees give them a determined toplogical structure that they must follow. Eventually they develop a frame to hold their vacant polygons, completing their data structure model. The downfall of this system–like their religion–is that there are a lot of rules that need to be followed.

As an addition to this article, I would love to read McNoleg’s interpretation of what happens when the Tessellati meet the Vectules. Or if the Vectules suddenly start eating the Tesselatti‘s pigs.

-sidewalkballet

Conceptual models of geographic space or mutant pig vs. predatory parrot

Thursday, January 17th, 2013

In ” An account of the origins of conceptual models of geographic space” by Oleg McNoleg, there are many points where questions may be raised on the idea of what one may conceive as geographic space. These points may  lie beneath imaginary animals and tribes, and masked within a silly story, but do make one think about how man perceives himself within his natural environment. The Tessellati, a tribe along the frost line,  for example is shown to perceive a particular area of a few square kilometres divided into sections as their space and world. Whilst, the Vectules, a tribe along an ocean, perceives their world as a set of defining lines (water’s edge) and points of security (trees). The two tribes provide the defining ideas of what can be thought of as raster and vector data and how these formats are utilized to define one’s area. Furthermore, the paper provides a unique way of thinking about how geographic space is actually defined and to what extent a person or group may define that area. For example, is it defined by a point that represents a tree with a predatory parrot or  defined equal area containing a mutant pig. Questions of an individual’s or group’s idea of space  from article seems to be based on one’s need and therefore forcing a particular way of perception on space. Although this article does help to show how personal situation reflects one’s perception of space, it does not deal with how perception may change if the tribes or some individuals from the different tribes exchanged places.

C_N_Cycles

Some kind of account of the origins of coneceptual models of geographic space

Thursday, January 17th, 2013

McNoleg conveys so much, and yet so little, in three pages. Further research reveals the Tessellati and Vectules either never existed, or have succeeded in erasing any trace of their existence from Google, Yahoo, Facebook Graph, etc. It is easy to draw parallels between the raster and vector data formats, though the pigcells of the Tessellati are a much better analogy. What McNoleg fails to mention is what sort of tessellation the Tessellati found to be most successful. A triangular model would simplify the construction of fencing with fewer angles required, but would produce areas in the pen wholly useless to the animal in that the nooks and crannies created by the acute angles would prevent the creature from accessing the area in the first place. Thus, maybe they found that rectangular, or even hexagonal pens worked better. Though, the 90 degrees required for the construction of a rectangular pen are much more common, considering it’s readily available in the hand of any child taunting a friend with the letter “L” on his or her forehead.

The “poly-gones” are a bit more of a stretch. Chances are the name Polly wasn’t even invented at the time, the name Wendy wasn’t around until the writing of Peter Pan. Furthermore, he does not include any differentiation between the single parrot cage, a line of parrot cages, and agglomeration of parrot cages. Whether or not this makes a difference is still up for debate, until then we’ll just have to scratch our heads and wonder what’s going on.

AMac