Published Reports
- Access Across Australia: 2018
- Catchment if you can: The effect of station entrance and exit locations on accessibility
2015
Dong, Andy; Sarkar, Somwrita
Forecasting technological progress potential based on the complexity of product knowledge Journal Article
In: Technological Forecasting and Social Change, vol. 90, pp. 599–610, 2015, ISSN: 0040-1625.
BibTeX | Links:
@article{Dong2015,
title = {Forecasting technological progress potential based on the complexity of product knowledge},
author = {Andy Dong and Somwrita Sarkar},
doi = {10.1016/j.techfore.2014.02.009},
issn = {0040-1625},
year = {2015},
date = {2015-01-00},
journal = {Technological Forecasting and Social Change},
volume = {90},
pages = {599--610},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yildirimoglu, Mehmet; Ramezani, Mohsen; Geroliminis, Nikolas
Equilibrium Analysis and Route Guidance in Large-scale Networks with MFD Dynamics Journal Article
In: Transportation Research Procedia, vol. 9, pp. 185–204, 2015, ISSN: 2352-1465.
BibTeX | Links:
@article{Yildirimoglu2015,
title = {Equilibrium Analysis and Route Guidance in Large-scale Networks with MFD Dynamics},
author = {Mehmet Yildirimoglu and Mohsen Ramezani and Nikolas Geroliminis},
doi = {10.1016/j.trpro.2015.07.011},
issn = {2352-1465},
year = {2015},
date = {2015-00-00},
journal = {Transportation Research Procedia},
volume = {9},
pages = {185--204},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sarkar, Somwrita
Spectral (Re)construction of Urban Street Networks: Generative Design Using Global Information from Structure Book Chapter
In: Design Computing and Cognition ’14, pp. 41–55, Springer International Publishing, 2015, ISBN: 9783319149561.
BibTeX | Links:
@inbook{Sarkar2015,
title = {Spectral (Re)construction of Urban Street Networks: Generative Design Using Global Information from Structure},
author = {Somwrita Sarkar},
doi = {10.1007/978-3-319-14956-1_3},
isbn = {9783319149561},
year = {2015},
date = {2015-00-00},
booktitle = {Design Computing and Cognition '14},
pages = {41--55},
publisher = {Springer International Publishing},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
2014
Kent, Jennifer L.; Thompson, Susan
The Three Domains of Urban Planning for Health and Well-being Journal Article
In: Journal of Planning Literature, vol. 29, no. 3, pp. 239–256, 2014, ISSN: 1552-6593.
@article{Kent2014d,
title = {The Three Domains of Urban Planning for Health and Well-being},
author = {Jennifer L. Kent and Susan Thompson},
doi = {10.1177/0885412214520712},
issn = {1552-6593},
year = {2014},
date = {2014-08-00},
journal = {Journal of Planning Literature},
volume = {29},
number = {3},
pages = {239--256},
publisher = {SAGE Publications},
abstract = { Urban planning has an important role to play in supporting human health. While this is increasingly recognized in a burgeoning interdisciplinary body of literature, there remains an ongoing need to clarify and conceptualize the relationship between planning and health. This is especially the case from the perspective of built environment professionals, as they increasingly focus on health and well-being issues. The key contribution of this article is such a conceptualization—a framework to group and review the literature in this rapidly expanding area of research. We suggest three domains where urban planning can most effectively focus support for health and well-being. These domains address the principle risk factors for contemporary chronic disease—physical inactivity, obesity, and social isolation. Our framework is then used to review an evidence base that supports the development, prioritization, and implementation of healthy built environment practice. This article concludes with a critical discussion of theoretical and practical tensions identified as potential impediments to the progression of this new and exciting interdisciplinary area of research. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Thompson, Susan; Kent, Jennifer
Connecting and strengthening communities in places for health and well-being Journal Article
In: Australian Planner, vol. 51, no. 3, pp. 260–271, 2014, ISSN: 2150-6841.
BibTeX | Links:
@article{Thompson2013,
title = {Connecting and strengthening communities in places for health and well-being},
author = {Susan Thompson and Jennifer Kent},
doi = {10.1080/07293682.2013.837832},
issn = {2150-6841},
year = {2014},
date = {2014-07-03},
journal = {Australian Planner},
volume = {51},
number = {3},
pages = {260--271},
publisher = {Informa UK Limited},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Robinson, P. A.; Sarkar, S.; Pandejee, Grishma Mehta; Henderson, J. A.
Determination of effective brain connectivity from functional connectivity with application to resting state connectivities Journal Article
In: Phys. Rev. E, vol. 90, no. 1, 2014, ISSN: 1550-2376.
BibTeX | Links:
@article{Robinson2014,
title = {Determination of effective brain connectivity from functional connectivity with application to resting state connectivities},
author = {P. A. Robinson and S. Sarkar and Grishma Mehta Pandejee and J. A. Henderson},
doi = {10.1103/physreve.90.012707},
issn = {1550-2376},
year = {2014},
date = {2014-07-00},
journal = {Phys. Rev. E},
volume = {90},
number = {1},
publisher = {American Physical Society (APS)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kent, Jennifer L.
Driving to save time or saving time to drive? The enduring appeal of the private car Journal Article
In: Transportation Research Part A: Policy and Practice, vol. 65, pp. 103–115, 2014, ISSN: 0965-8564.
BibTeX | Links:
@article{Kent2014b,
title = {Driving to save time or saving time to drive? The enduring appeal of the private car},
author = {Jennifer L. Kent},
doi = {10.1016/j.tra.2014.04.009},
issn = {0965-8564},
year = {2014},
date = {2014-07-00},
journal = {Transportation Research Part A: Policy and Practice},
volume = {65},
pages = {103--115},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kent, Jennifer L.
Carsharing as active transport: What are the potential health benefits? Journal Article
In: Journal of Transport & Health, vol. 1, no. 1, pp. 54–62, 2014, ISSN: 2214-1405.
BibTeX | Links:
@article{Kent2014,
title = {Carsharing as active transport: What are the potential health benefits?},
author = {Jennifer L. Kent},
doi = {10.1016/j.jth.2013.07.003},
issn = {2214-1405},
year = {2014},
date = {2014-03-00},
journal = {Journal of Transport & Health},
volume = {1},
number = {1},
pages = {54--62},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Thompson, Susan; Kent, Jennifer
Healthy Built Environments Supporting Everyday Occupations: Current Thinking in Urban Planning Journal Article
In: Journal of Occupational Science, vol. 21, no. 1, pp. 25–41, 2014, ISSN: 2158-1576.
BibTeX | Links:
@article{Thompson2013b,
title = {Healthy Built Environments Supporting Everyday Occupations: Current Thinking in Urban Planning},
author = {Susan Thompson and Jennifer Kent},
doi = {10.1080/14427591.2013.867562},
issn = {2158-1576},
year = {2014},
date = {2014-01-02},
journal = {Journal of Occupational Science},
volume = {21},
number = {1},
pages = {25--41},
publisher = {Informa UK Limited},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sarkar, Somwrita; Dong, Andy; Henderson, James A.; Robinson, P. A.
Spectral Characterization of Hierarchical Modularity in Product Architectures1 Journal Article
In: vol. 136, no. 1, 2014, ISSN: 1528-9001.
@article{Sarkar2013,
title = {Spectral Characterization of Hierarchical Modularity in Product Architectures1},
author = {Somwrita Sarkar and Andy Dong and James A. Henderson and P. A. Robinson},
doi = {10.1115/1.4025490},
issn = {1528-9001},
year = {2014},
date = {2014-01-01},
volume = {136},
number = {1},
publisher = {ASME International},
abstract = {Despite the importance of the architectural modularity of products and systems, existing modularity metrics or algorithms do not account for overlapping and hierarchically embedded modules. This paper presents a graph theoretic spectral approach to characterize the degree of modular hierarchical-overlapping organization in the architecture of products and complex engineered systems. It is shown that the eigenvalues of the adjacency matrix of a product architecture graph can reveal layers of hidden modular or hierarchical modular organization that are not immediately visible in the predefined architectural description. We use the approach to analyze and discuss several design, management, and system resilience implications for complex engineered systems. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dong, Andy; Sarkar, Somwrita; Yang, Maria C.; Honda, Tomonori
A linguistic approach to assess the dynamics of design team preference in concept selection Journal Article
In: Res Eng Design, vol. 25, no. 1, pp. 75–92, 2014, ISSN: 1435-6066.
BibTeX | Links:
@article{Dong2013b,
title = {A linguistic approach to assess the dynamics of design team preference in concept selection},
author = {Andy Dong and Somwrita Sarkar and Maria C. Yang and Tomonori Honda},
doi = {10.1007/s00163-013-0165-1},
issn = {1435-6066},
year = {2014},
date = {2014-01-00},
journal = {Res Eng Design},
volume = {25},
number = {1},
pages = {75--92},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dong, Andy; Sarkar, Somwrita
Generalized Design Knowledge and the Higher-Order Singular Value Decomposition Book Chapter
In: Design Computing and Cognition ’12, pp. 415–432, Springer Netherlands, 2014, ISBN: 9789401791120.
BibTeX | Links:
@inbook{Dong2014,
title = {Generalized Design Knowledge and the Higher-Order Singular Value Decomposition},
author = {Andy Dong and Somwrita Sarkar},
doi = {10.1007/978-94-017-9112-0_23},
isbn = {9789401791120},
year = {2014},
date = {2014-00-00},
booktitle = {Design Computing and Cognition '12},
pages = {415--432},
publisher = {Springer Netherlands},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
2013
Ramezani, Mohsen; Geroliminis, Nikolas
Exploiting probe data to estimate the queue profile in urban networks
2013.
BibTeX | Links:
@{Ramezani2013,
title = {Exploiting probe data to estimate the queue profile in urban networks},
author = {Mohsen Ramezani and Nikolas Geroliminis},
doi = {10.1109/itsc.2013.6728492},
year = {2013},
date = {2013-10-00},
pages = {1817--1822},
publisher = {IEEE},
keywords = {},
pubstate = {published},
tppubtype = {}
}
Kent, Jennifer L.; Dowling, Robyn
Puncturing automobility? Carsharing practices Journal Article
In: Journal of Transport Geography, vol. 32, pp. 86–92, 2013, ISSN: 0966-6923.
BibTeX | Links:
@article{Kent2013,
title = {Puncturing automobility? Carsharing practices},
author = {Jennifer L. Kent and Robyn Dowling},
doi = {10.1016/j.jtrangeo.2013.08.014},
issn = {0966-6923},
year = {2013},
date = {2013-10-00},
journal = {Journal of Transport Geography},
volume = {32},
pages = {86--92},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Haddad, Jack; Ramezani, Mohsen; Geroliminis, Nikolas
Cooperative traffic control of a mixed network with two urban regions and a freeway Journal Article
In: Transportation Research Part B: Methodological, vol. 54, pp. 17–36, 2013, ISSN: 0191-2615.
BibTeX | Links:
@article{Haddad2013,
title = {Cooperative traffic control of a mixed network with two urban regions and a freeway},
author = {Jack Haddad and Mohsen Ramezani and Nikolas Geroliminis},
doi = {10.1016/j.trb.2013.03.007},
issn = {0191-2615},
year = {2013},
date = {2013-08-00},
journal = {Transportation Research Part B: Methodological},
volume = {54},
pages = {17--36},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dong, Andy; Sarkar, Somwrita; Nichols, Crighton; Kvan, Thomas
The capability approach as a framework for the assessment of policies toward civic engagement in design Journal Article
In: Design Studies, vol. 34, no. 3, pp. 326–344, 2013, ISSN: 0142-694X.
BibTeX | Links:
@article{Dong2013,
title = {The capability approach as a framework for the assessment of policies toward civic engagement in design},
author = {Andy Dong and Somwrita Sarkar and Crighton Nichols and Thomas Kvan},
doi = {10.1016/j.destud.2012.10.002},
issn = {0142-694X},
year = {2013},
date = {2013-05-00},
journal = {Design Studies},
volume = {34},
number = {3},
pages = {326--344},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Geroliminis, Nikolas; Haddad, Jack; Ramezani, Mohsen
Optimal Perimeter Control for Two Urban Regions With Macroscopic Fundamental Diagrams: A Model Predictive Approach Journal Article
In: IEEE Trans. Intell. Transport. Syst., vol. 14, no. 1, pp. 348–359, 2013, ISSN: 1558-0016.
BibTeX | Links:
@article{Geroliminis2013,
title = {Optimal Perimeter Control for Two Urban Regions With Macroscopic Fundamental Diagrams: A Model Predictive Approach},
author = {Nikolas Geroliminis and Jack Haddad and Mohsen Ramezani},
doi = {10.1109/tits.2012.2216877},
issn = {1558-0016},
year = {2013},
date = {2013-03-00},
journal = {IEEE Trans. Intell. Transport. Syst.},
volume = {14},
number = {1},
pages = {348--359},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sarkar, Somwrita; Henderson, James A.; Robinson, Peter A.
Spectral Characterization of Hierarchical Network Modularity and Limits of Modularity Detection Journal Article
In: PLoS ONE, vol. 8, no. 1, 2013, ISSN: 1932-6203.
BibTeX | Links:
@article{Sarkar2013b,
title = {Spectral Characterization of Hierarchical Network Modularity and Limits of Modularity Detection},
author = {Somwrita Sarkar and James A. Henderson and Peter A. Robinson},
editor = {Jesus Gomez-Gardenes},
doi = {10.1371/journal.pone.0054383},
issn = {1932-6203},
year = {2013},
date = {2013-01-28},
journal = {PLoS ONE},
volume = {8},
number = {1},
publisher = {Public Library of Science (PLoS)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2012
Ramezani, Mohsen; Geroliminis, Nikolas
On the estimation of arterial route travel time distribution with Markov chains Journal Article
In: Transportation Research Part B: Methodological, vol. 46, no. 10, pp. 1576–1590, 2012, ISSN: 0191-2615.
BibTeX | Links:
@article{Ramezani2012,
title = {On the estimation of arterial route travel time distribution with Markov chains},
author = {Mohsen Ramezani and Nikolas Geroliminis},
doi = {10.1016/j.trb.2012.08.004},
issn = {0191-2615},
year = {2012},
date = {2012-12-00},
journal = {Transportation Research Part B: Methodological},
volume = {46},
number = {10},
pages = {1576--1590},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Ramezani, Mohsen; Haddad, Jack; Geroliminis, Nikolas
Macroscopic Traffic Control of a Mixed Urban and Freeway Network Journal Article
In: IFAC Proceedings Volumes, vol. 45, no. 24, pp. 89–94, 2012, ISSN: 1474-6670.
BibTeX | Links:
@article{Ramezani2012b,
title = {Macroscopic Traffic Control of a Mixed Urban and Freeway Network},
author = {Mohsen Ramezani and Jack Haddad and Nikolas Geroliminis},
doi = {10.3182/20120912-3-bg-2031.00017},
issn = {1474-6670},
year = {2012},
date = {2012-09-00},
journal = {IFAC Proceedings Volumes},
volume = {45},
number = {24},
pages = {89--94},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dong, Andy; Sarkar, Somwrita
Endogenous Progress Potential
2012.
@{Dong2012,
title = {Endogenous Progress Potential},
author = {Andy Dong and Somwrita Sarkar},
doi = {10.1115/detc2012-70096},
year = {2012},
date = {2012-08-12},
pages = {647--657},
publisher = {American Society of Mechanical Engineers},
abstract = {This paper provides a graph-theoretic framework for assessing the progress potential for a product or class of products based on the underlying knowledge structure. We characterize the knowledge structure based on singular value signatures and extend the characterization to multi-dimensional functional model representations of product knowledge. We show that the progress potential for a product is partially determined by graph properties of the knowledge structure, and whether the graph structure is modular, random, or hierarchically modular. The characterization is empirically tested on energy harvesting devices. Our model connects the knowledge underlying a product to its potential for progress, appropriately taking into account the nature of product knowledge and its ‘complexity’. },
keywords = {},
pubstate = {published},
tppubtype = {}
}
Haddad, J.; Ramezani, M.; Geroliminis, N.
Model predictive perimeter control for urban areas with macroscopic fundamental diagrams
2012.
BibTeX | Links:
@{Haddad2012,
title = {Model predictive perimeter control for urban areas with macroscopic fundamental diagrams},
author = {J. Haddad and M. Ramezani and N. Geroliminis},
doi = {10.1109/acc.2012.6314693},
year = {2012},
date = {2012-06-00},
pages = {5757--5762},
publisher = {IEEE},
keywords = {},
pubstate = {published},
tppubtype = {}
}
Meyers, Robert A. (Ed.)
Encyclopedia of Sustainability Science and Technology
2012.
BibTeX | Links:
@{2012,
title = {Encyclopedia of Sustainability Science and Technology},
editor = {Robert A. Meyers},
doi = {10.1007/978-1-4419-0851-3},
year = {2012},
date = {2012-00-00},
publisher = {Springer New York},
keywords = {},
pubstate = {published},
tppubtype = {}
}
Kent, Jennifer; Thompson, Susan
Health and the Built Environment: Exploring Foundations for a New Interdisciplinary Profession Journal Article
In: Journal of Environmental and Public Health, vol. 2012, pp. 1–10, 2012, ISSN: 1687-9813.
@article{Kent2012,
title = {Health and the Built Environment: Exploring Foundations for a New Interdisciplinary Profession},
author = {Jennifer Kent and Susan Thompson},
doi = {10.1155/2012/958175},
issn = {1687-9813},
year = {2012},
date = {2012-00-00},
journal = {Journal of Environmental and Public Health},
volume = {2012},
pages = {1--10},
publisher = {Wiley},
abstract = {The supportive role of the built environment for human health is a growing area of interdisciplinary research, evidence-based policy development, and related practice. Nevertheless, despite closely linked origins, the contemporary professions of public health and urban planning largely operate within the neoliberal framework of academic, political, and policy silos. A reinvigorated relationship between the two is fundamental to building and sustaining an effective “healthy built environment profession.” A recent comprehensive review of the burgeoning literature on healthy built environments identified an emergent theme which we have termed “Professional Development.” This literature relates to the development of relationships between health and built environment professionals. It covers case studies illustrating good practice models for policy change, as well as ways professionals can work to translate research into policy. Intertwined with this empirical research is a dialogue on theoretical tensions emerging as health and built environment practitioners and researchers seek to establish mutual understanding and respect. The nature of evidence required to justify policy change, for example, has surfaced as an area of asynchrony between accepted disciplinary protocols. Our paper discusses this important body of research with a view to initiating and supporting the ongoing development of an interdisciplinary profession of healthy planning. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2011
DONG, ANDY; SARKAR, SOMWRITA
Unfixing Design Fixation: From Cause to Computer Simulation Journal Article
In: Journal of Creative Behavior, vol. 45, no. 2, pp. 147–159, 2011, ISSN: 2162-6057.
@article{DONG2011,
title = {Unfixing Design Fixation: From Cause to Computer Simulation},
author = {ANDY DONG and SOMWRITA SARKAR},
doi = {10.1002/j.2162-6057.2011.tb01093.x},
issn = {2162-6057},
year = {2011},
date = {2011-06-00},
journal = {Journal of Creative Behavior},
volume = {45},
number = {2},
pages = {147--159},
publisher = {Wiley},
abstract = {ABSTRACT This paper argues that design fixation, in part, entails fixation at the level of meta‐representation, the representation of the relation between a representation and its reference. In this paper, we present a mathematical model that mimics the idea of how fixation can occur at the meta‐representation level. In this model, new abstract concepts derived from the meta‐representation are not simple combinations of the design ideas expressed in the primary representation. Instead, the process of meta‐representation corresponds to the abstraction of new features at a higher, hierarchically separated level of representation from an existing one. We show a computational process of pattern extraction from existing design representations that results in the crystallization of design ideas or ‘chunks’ at an abstract level. The relation between the representation and its referent is explicitly described in these ‘chunks’, yet the ‘chunks’ have different properties from the properties of the original representation. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sarkar, Somwrita; Dong, Andy
Community detection in graphs using singular value decomposition Journal Article
In: Phys. Rev. E, vol. 83, no. 4, 2011, ISSN: 1550-2376.
BibTeX | Links:
@article{Sarkar2011,
title = {Community detection in graphs using singular value decomposition},
author = {Somwrita Sarkar and Andy Dong},
doi = {10.1103/physreve.83.046114},
issn = {1550-2376},
year = {2011},
date = {2011-04-00},
journal = {Phys. Rev. E},
volume = {83},
number = {4},
publisher = {American Physical Society (APS)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sarkar, Somwrita; Dong, Andy
Characterizing Modularity, Hierarchy and Module Interfacing in Complex Design Systems
2011.
@{Sarkar2011b,
title = {Characterizing Modularity, Hierarchy and Module Interfacing in Complex Design Systems},
author = {Somwrita Sarkar and Andy Dong},
doi = {10.1115/detc2011-47992},
year = {2011},
date = {2011-01-01},
pages = {375--384},
publisher = {ASMEDC},
abstract = {Modular engineering systems have multiple benefits over their more integral counterparts. Despite the importance of modularity, metrics and methods for a precise quantitative characterization of modularity, hierarchy and module interfacing remain relatively ambiguous. In this paper, using graph theory and linear algebra, we develop a spectral approach to establish: (1) a metric to characterize modularity, hierarchy and module interfacing in complex engineering systems; and, (2) a method for module identification and system decomposition that addresses hierarchical and overlapping organization of modularity in a complex system. The Singular Values (SV) signatures of random, regular, modular and hierarchically modular benchmark graph models are used to establish the metric. Then, the method is applied to a real design model and its modularity signature is assessed. The modularity signature of a real world system is shown to sit in the continuum established by the extremes of random, regular and modular and hierarchically modular graph models. The main contribution of the work is that it proposes that modularity is an aggregate concept that is measured in terms of multiple concepts expressed as graph properties. An ideal numeric modularity measurement index would have to incorporate these multiple criteria that affect modularity. The method can be used in the conceptual and detailed design stages for purposes of redesigning a product based on the degree of desired modularity. },
keywords = {},
pubstate = {published},
tppubtype = {}
}
2010
Sarkar, Somwrita; Dong, Andy; Gero, John S.
Learning symbolic formulations in design: Syntax, semantics, and knowledge reification Journal Article
In: AIEDAM, vol. 24, no. 1, pp. 63–85, 2010, ISSN: 1469-1760.
@article{Sarkar2010,
title = {Learning symbolic formulations in design: Syntax, semantics, and knowledge reification},
author = {Somwrita Sarkar and Andy Dong and John S. Gero},
doi = {10.1017/s0890060409990175},
issn = {1469-1760},
year = {2010},
date = {2010-02-00},
journal = {AIEDAM},
volume = {24},
number = {1},
pages = {63--85},
publisher = {Cambridge University Press (CUP)},
abstract = {Abstract An artificial intelligence (AI) algorithm to automate symbolic design reformulation is an enduring challenge in design automation. Existing research shows that design tools either require high levels of knowledge engineering or large databases of training cases. To address these limitations, we present a singular value decomposition (SVD) and unsupervised clustering-based method that performs design reformulation by acquiring semantic knowledge from the syntax of design representations. The development of the method was analogically inspired by applications of SVD in statistical natural language processing and digital image processing. We demonstrate our method on an analytically formulated hydraulic cylinder design problem and an aeroengine design problem formulated using a nonanalytic design structure matrix form. Our results show that the method automates various design reformulation tasks on problems of varying sizes from different design domains, stated in analytic and nonanalytic representational forms. The behavior of the method presents observations that cannot be explained by pure symbolic AI approaches, including uncovering patterns of implicit knowledge that are not readily encoded as logical rules, and automating tasks that require the associative transformation of sets of inputs to experiences. As an explanation, we relate the structure and performance of our algorithm with findings in cognitive neuroscience, and present a set of theoretical postulates addressing an alternate perspective on how symbols may interact with each other in experiences to reify semantic knowledge in design representations. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2009
Ghalenoei, Mohsen Ramezani; Hajimirsadeghi, Hossein; Lucas, Caro
Discrete invasive weed optimization algorithm: application to cooperative multiple task assignment of UAVs
2009.
BibTeX | Links:
@{RamezaniGhalenoei2009,
title = {Discrete invasive weed optimization algorithm: application to cooperative multiple task assignment of UAVs},
author = {Mohsen Ramezani Ghalenoei and Hossein Hajimirsadeghi and Caro Lucas},
doi = {10.1109/cdc.2009.5400938},
year = {2009},
date = {2009-12-00},
pages = {1665--1670},
publisher = {IEEE},
keywords = {},
pubstate = {published},
tppubtype = {}
}
Sarkar, Somwrita; Dong, Andy; Gero, John S.
Design Optimization Problem Reformulation Using Singular Value Decomposition Journal Article
In: vol. 131, no. 8, 2009, ISSN: 1528-9001.
@article{Sarkar2009,
title = {Design Optimization Problem Reformulation Using Singular Value Decomposition},
author = {Somwrita Sarkar and Andy Dong and John S. Gero},
doi = {10.1115/1.3179148},
issn = {1528-9001},
year = {2009},
date = {2009-08-01},
volume = {131},
number = {8},
publisher = {ASME International},
abstract = {This paper presents a design optimization problem reformulation method based on singular value decomposition, dimensionality reduction, and unsupervised clustering. The method calculates linear approximations of associative patterns of symbol co-occurrences in a design problem representation to induce implicit coupling strengths between variables and constraints. Unsupervised clustering of these approximations is used to heuristically identify useful reformulations. In contrast to knowledge-rich Artificial Intelligence methods, this method derives from a knowledge-lean, unsupervised pattern recognition perspective. We explain the method on an analytically formulated decomposition problem, and apply it to various analytic and nonanalytic problem forms to demonstrate design decomposition and design “case” identification. A single method is used to demonstrate multiple design reformulation tasks. The results show that the method can be used to infer multiple well-formed reformulations starting from a single problem representation in a knowledge-lean manner. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2008
Sarkar, Somwrita; Dong, Andy; Gero, John S.
A Learning and Inference Mechanism for Design Optimization Problem (Re)-Formulation Using Singular Value Decomposition
2008.
@{Sarkar2008,
title = {A Learning and Inference Mechanism for Design Optimization Problem (Re)-Formulation Using Singular Value Decomposition},
author = {Somwrita Sarkar and Andy Dong and John S. Gero},
doi = {10.1115/detc2008-49147},
year = {2008},
date = {2008-01-01},
pages = {97--106},
publisher = {ASMEDC},
abstract = {This paper presents a knowledge-lean learning and inference mechanism based on Singular Value Decomposition (SVD) for design optimization problem (re)-formulation at the problem modeling stage. The distinguishing feature of the mechanism is that it requires very few training cases to extract and generalize knowledge for large classes of problems sharing similar characteristics. The genesis of the mechanism is based on viewing problem (re)-formulation as a statistical pattern extraction problem. SVD is applied as a dimensionality reduction tool to extract semantic patterns from a syntactic formulation of the design problem. We explain and evaluate the mechanism on a model-based decomposition problem, a hydraulic cylinder design problem, and a medium-large scale Aircraft Concept Sizing problem. The results show that the method generalizes quickly and can be used to impute relations between variables, parameters, objective functions, and constraints when training data is provided in symbolic analytical form, and is likely to be extensible to forms when the representation is not in analytical functional form. },
keywords = {},
pubstate = {published},
tppubtype = {}
}
Sarkar, Somwrita; Dong, Andy; Gero, John S.
Learning Symbolic Formulations in Design Optimization Book Chapter
In: Design Computing and Cognition ’08, pp. 533–552, Springer Netherlands, 2008, ISBN: 9781402087288.
BibTeX | Links:
@inbook{Sarkar2008b,
title = {Learning Symbolic Formulations in Design Optimization},
author = {Somwrita Sarkar and Andy Dong and John S. Gero},
doi = {10.1007/978-1-4020-8728-8_28},
isbn = {9781402087288},
year = {2008},
date = {2008-00-00},
booktitle = {Design Computing and Cognition '08},
pages = {533--552},
publisher = {Springer Netherlands},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}