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Optimal Transport for structured data with application on graphs [article]

Titouan Vayer, Laetitia Chapel, Rémi Flamary, Romain Tavenard, Nicolas Courty
2019 arXiv   pre-print
We consider a new transportation distance (i.e. that minimizes a total cost of transporting probability masses) that unveils the geometric nature of the structured objects space.  ...  Unlike Wasserstein or Gromov-Wasserstein metrics that focus solely and respectively on features (by considering a metric in the feature space) or structure (by seeing structure as a metric space), our  ...  We gratefully acknowledge the support of NVIDIA Corporation with the donation of the Titan X GPU used for this research.  ... 
arXiv:1805.09114v3 fatcat:t65lf7ktdvgizhbx2auckxuoam

Constructing a database structure in the problem of the assignment of air transport operators to commissioned tasks

Ilona Jacyna-Gołda, Mariusz Izdebski, Piotr Klimek, Rostislav Vašek, O. Voznyak, Y. Bolzhelarskyi
2019 MATEC Web of Conferences  
The article defines the database structure used in the issue of the assignment of air transport operators to commissioned transport tasks.  ...  The purpose of the work is to develop a database structure that fulfills the function of recording information, presenting results and processing calculated data.  ...  about customers, operators, -Module of data presentation -mediates the process of sharing data collected in the database for authorized users, -Optimization module -the module stores reports and data  ... 
doi:10.1051/matecconf/201929404004 fatcat:u3ghvhxlvrgpphzszxdtkhufhm

Passenger Transportation Structure Optimization Model Based on User Optimum

Yanli Ma, Yuee Gao
2016 Procedia Engineering  
Rationalization and optimization of passenger transportation structure is one of important means of improving its validity.  ...  According to this idea, optimization model of passenger transportation structure based on resource constraints is built.  ...  Acknowledgements This study was sponsored by the science and technology support project of the National 11th Five-year Plan " Key Techniques of Planning and Evaluation on Urban Comprehensive Transportation  ... 
doi:10.1016/j.proeng.2016.01.251 fatcat:azukauy7yraf5ds3khi3na2h7q

Minimum Entransy Dissipation Principle for Optimization of Transport Networks

X.B. Liu, M. Wang, J. Meng, E. Ben-Naim, Ζ.Υ. Guo
2010 International journal of nonlinear sciences and numerical simulation  
The present optimization analyses agree well with the existing experimental data and optimization theories for transport networks.  ...  The concept of entransy, which describes the capability of heat conduction in the continuum and was originally used for optimization of heat transfer devices, has been extended for optimization of transport  ...  The minimum entransy dissipation principle has been validated by comparing with the existing experimental data and other optimization theories for different transport networks.  ... 
doi:10.1515/ijnsns.2010.11.2.113 fatcat:shwul4otg5aednazwpdqrpxwni

Hierarchical Optimal Transport for Unsupervised Domain Adaptation [article]

Mourad El Hamri and Younès Bennani and Issam Falih and Hamid Ahaggach
2021 arXiv   pre-print
In this paper, we propose a novel approach for unsupervised domain adaptation, that relates notions of optimal transport, learning probability measures and unsupervised learning.  ...  The proposed approach, HOT-DA, is based on a hierarchical formulation of optimal transport, that leverages beyond the geometrical information captured by the ground metric, richer structural information  ...  Matching source and target structures through hierarchical optimal transport Optimal transport offers a well-founded geometric way for comparing probability measures in a Lagrangian framework, and for  ... 
arXiv:2112.02073v1 fatcat:yn7mek3xwzhstka6bubcvpwmu4

Materials Informatics for Heat Transfer: Recent Progresses and Perspectives [article]

Shenghong Ju, Junichiro Shiomi
2019 arXiv   pre-print
However, search for optimal thermal materials is challenge due to the tremendous degrees of freedom in the composition and structure of crystal compounds and nanostructures, and thus empirical search would  ...  design for high/low thermal conductance using the Bayesian optimization and Monte Carlo tree search.  ...  Exploration and designing of materials and structures with desired thermal transport properties have large potential for application.  ... 
arXiv:1901.08504v1 fatcat:a7455dnzarcpxexmvzjhevql3a

Shaping the Optimal Technology for Servicing the Long-Distance Deliveries of Packaged Cargo by Road Transport

Vitalii Naumov, Olha Shulika, Oleksandra Orda, Hanna Vasiutina, Marek Bauer, Myroslav Oliskevych
2022 Sustainability  
That especially applies to road transport deliveries, where the number of alternatives for organizing the transportation process is numerous and the choice of the optimal solution is complicated by the  ...  (Kharkiv, Ukraine) is applied to illustrate the procedure of using the developed approach to choose the optimal transport and technological schemes for long-distance deliveries.  ...  Acknowledgments: The authors acknowledge the support of the Delivery Ltd. company (Kharkiv, Ukraine) for providing real-world data for experimental studies.  ... 
doi:10.3390/su14127283 doaj:b0dc5e4f4dfc46b1a918c1ed880e49bf fatcat:bqtctqskyrb7pg5uch42ivakbu

Latent Space Optimal Transport for Generative Models [article]

Huidong Liu, Yang Guo, Na Lei, Zhixin Shu, Shing-Tung Yau, Dimitris Samaras, Xianfeng Gu
2018 arXiv   pre-print
A GAN can transform a simple distribution to a latent-space data distribution and thus preserve the manifold structure, but optimizing a GAN involves solving a Min-Max optimization problem, which is difficult  ...  However, this causes the posterior collapse problem and loses manifold structure which can be important for datasets such as facial images.  ...  AE-OT has a strong geometric motivation and is therefore more suitable for data that has strong manifold structures, for example, handwritten digits and human faces.  ... 
arXiv:1809.05964v1 fatcat:adtnibobkfguhgzjg2v57xi5ea

Geometry Optimization of Self-Similar Transport Network

X. D. Shan, M. Wang, Z. Y. Guo
2011 Mathematical Problems in Engineering  
Using this optimization method, we obtained optimal relationships of geometric parameters of T-shape networks for fluid flow, heat conduction, convective heat transfer, and other transport phenomena.  ...  The optimized transport network structure depends strongly on the optimization objective and the constraints, so that both the maximum heat transfer effect and minimum flow resistance cannot be satisfied  ...  Their optimization analyses agreed well with the existing experimental data and optimization theories for transport networks 31 .  ... 
doi:10.1155/2011/421526 fatcat:hl6wi7ll4rd6fljgeyewohimga

Structural conservation in the major facilitator superfamily as revealed by comparative modeling

Eyal Vardy, Isaiah T. Arkin, Kay E. Gottschalk, H. Ronald Kaback, Shimon Schuldiner
2004 Protein Science  
The models for both proteins are in good agreement with the data available and support the notion of a shared fold for all MFS proteins.  ...  The models are based on the two MFS structures and on experimental data.  ...  We thank Yael Elbaz for helpful discussions. The publication costs of this article were defrayed in part by payment of page charges.  ... 
doi:10.1110/ps.04657704 pmid:15215526 pmcid:PMC2279927 fatcat:icqjz3ncvngmzdshyy3xbd5pwq

PANDORA - A python based framework for modelling and structural sizing of transport aircraft

Michael Petsch, Dieter Kohlgrüber, Jörg Heubischl, K. Kontis, S. Pantelakis
2018 MATEC Web of Conferences  
SOROUR -A FINITE ELEMENT BASED TOOL CHAIN FOR STRUCTURAL SIZING OF TRANSPORT AIRCRAFT IN PRELIMINARY AIRCARFT DESIGN" DLRK 2013, STUTTGART PANDORA -Toolenviroment (Parametric Numerical Design and Optimization  ...  Petsch • PANDORA > 05.09.2018 Python FE raw data (Parametric Numerical Design and Optimization Routines for Aircraft) > EASN 2018 > M.  ... 
doi:10.1051/matecconf/201823300013 fatcat:dpl4auf4fjeq3l65lw27flohyy

Materials discovery and properties prediction in thermal transport via materials informatics: a mini-review [article]

Xiao Wan, Wentao Feng, Yunpeng Wang, Chengcheng Deng, Nuo Yang
2019 arXiv   pre-print
In addition, some perspectives are given for the outlook of materials informatics in the field of thermal transport.  ...  , including optimal thermal conductivity, interfacial thermal conductance and thermoelectricity efficiency.  ...  optimization (a)-(d) Optimal structures with the maximum and minimum interfacial thermal conductance (ITC) for Si-Si and Si-Ge interface.  ... 
arXiv:1901.04133v1 fatcat:2lmiikbszbf6fptbffxitnrtem

Functional Maturity Based Optimization of Public Service Mode of Urban Road Transportation—Case Study of Taizhou City in China

Ying Chen, Wenping Guo, Xiaoming Zhao
2016 International Journal of Transportation  
to build new road transport industry, namely transport serving for economy, management serving for market and operation serving for the public.  ...  proposes to optimize the road transport management.  ...  Based on the data collected by questionnaire, this paper uses covariance structure analysis to evaluate the functional maturity, and then proposes to optimize the road transport management.  ... 
doi:10.14257/ijt.2016.4.3.04 fatcat:icay4x6mu5ethi7l65cfmca5tu

Research on Collaborative Optimization Model of Tourism Resources and Highway Network Based on IoT Network and Deep Learning

Zhiwen Xu, Fang Xie, Muhammad Arif
2022 Security and Communication Networks  
With the development of tourism, people's demand and concern for tourist transportation are increasing.  ...  For the total investment of tourism construction projects, the time cost saved by highway network optimization, and the total tourism revenue, the lower-level model aims to minimize the travel time of  ...  To gather and extract high-order data from samples, many processing layers are utilized, including complex structures and nonlinear transformation. e study on the road network optimization issue is mostly  ... 
doi:10.1155/2022/1637348 fatcat:rkzpjyfn6jhhvhz7ktcxm44h6y

Essential Tasks to Reduce Environmental Pollution in Urban Transportation Networks

Fengxiang Qiao, Qing Li, Lei Yu
2017 Environment Pollution and Climate Change  
structures to improve urban air quality: This is to develop models to optimize network topological structures so as to mitigate GHG and pollutant emissions for urban networks and improve air quality.  ...  This will thus develop theoretical and applied models for optimizing the network topological structure with environmental and economic constrains so as to reducing GHG and pollutant emissions. • Developing  ... 
doi:10.4172/2573-458x.1000142 fatcat:6yk5daeju5hkvk7a7j2yvrfph4
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