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Vahid Moosavi
Modeling in Coexistence with DataToward a Generic Notion of Space
First PartModeling in Coexistence with Data, (the conceptual story line of this talk)
Second PartToward a Generic Notion of Space ( three applications around the notion of space)
The Classical Modeling Process and the Role of Data(A set theoretical notion of a model)
Abstract(Universals(
Data$
Modeling$Process$ Final$Model$(Ideals )
Abstract Universals and Rational Modeling
Here, “Circle-ness” as an Ideal form is assumed.Then, each observation is a “circle”.Or each observation is a “circle” with specific “radius”.
Rational Modeling and Modern Analysis based on the
Idealized dictionariesO
bser
ved
Mod
elFourier Decomposition
Urban Modeling and Idealization
Space SyntaxAgent Based Modeling
System Dynamics
This approach of modeling reaches to a theoretical limit in complex systems...
The Secondary role of the data in the classical modeling and simulation:•First we establish a dictionary and a grammar of the real phenomena based on a set of ideal conditions.•Then we tune the model with the
Abstract(Universals(
Data$
Modeling$Process$ Final$Model$
What if instead of given
dictionaries and ideals, we learn
them in a Coexistence
withUrban Data Streams?
An Alternative Approach
We need a conceptual inversion in the role of data in the modeling process
Concrete(Universals(
Unstructured*Data* Modeling*Process* Final*Model*
Modeling in Co-existence with DataBeyond the notion of error and the ideal form
Second part: Toward a generic notion of space
Given Dictionary of Forms
Learned Dictionary of Forms
Self Organizing Map (SOM)
(As a Generic Space, where closer items are more similar to each other)
CAAD 2010Benjamin Dillenburger
The interplay between two different spaces
The interplay between two different spaces
Ludger Hovestadt, Vahid Moosavi, Mathias Standfest 2012
First Application
Urban Air Pollution Modeling
Urban Air Pollution Modeling
Vahid Moosavi, Gideon Aschwanden, Erik Velasco 2014
Urban Air Pollution Modeling
Vahid Moosavi, Gideon Aschwanden, Erik Velasco 2014
Urban Information +
few measurements
Urban Air Pollution Modeling
Learning a dictionaryA new space based on similarity of urban parameters
Urban Air Pollution Modeling
Learning a dictionary Estimating the air pollution level with different confidence levels with only 3% direct measurement
Urban Air Pollution Modeling
Locating the monitoring stations
Second Application
Modeling the Dynamics of Real Estate Market
Modeling the Dynamics of Real Estate Market
First Law of Geography (FLG)Waldo Tobler :"Everything is related to everything else, but near things are more related than distant things”
Basics of Spa7al Modeling
Q: But near in which space and based on which similarity and relatedness?
Idea: Is there a way to reach to a generic notion of space which is based on any
similarity of interest?
Modeling the Dynamics of Real Estate Market
Monthly Median Price per sq.ft of sold houses of each Zip code in the state of
Florida
Modeling the Dynamics of Real Estate Market
The topology of this dynamic
It seems there should be some patterns
Modeling the Dynamics of Real Estate Market
But not necessarily a spatial pattern
How about the FLG?
It is like a jigsaw puzzle
From 2002
To 2015But not just one, several
puzzles at once
Modeling the Dynamics of Real Estate Market
SOM$
Learning a temporal dictionary
Modeling the Dynamics of Real Estate Market
From a spatial image of the marketwith random pixels
To another image of market that follows FLG?
SOM$
Modeling the Dynamics of Real Estate Market
An Image of the market
Median price of a all the zip codes in Florida from 2002-2015
Modeling the Dynamics of Real Estate MarketTwo notions of space
Modeling the Dynamics of Real Estate MarketPredicting 6 months ahead priceUsing the same prediction methodOnly different neighbors
Most of the times, we get better results with looking to the new space!
Modeling the Dynamics of Real Estate Market
Two notions of space
Geo Space
SOM Space
Modeling the Dynamics of Real Estate MarketSpatial Distribution of Error
Third Application
Contextual MappingOr how to be able to create personalized images of the space?
Cities are complex and multi-facetedHow to look at a city with huge amount of digital data?
Is it possible that instead of a top-down map, we provide a simple mapping process?
“Toward personalized images of space”
Age + Health
Method: Learn a one dimensional dictionary and take its elements as an ordered set of numbers.
Age + Health
Levels of Education + Health
Distance travel to work
Crime Categories
Contextual MappingRacial Mixture in New York City?
Contextual MappingRedistricting and the will of the people
How polarized is Colorado in different elections?Is there any bottom up approach to define the electoral borders?
thank YOU
•Abstraction dis-solves the current problem and transcends to a new world with new kind of challenges.
•Generalization opens up or keeps the discussions in the same world that the problem exists.