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Combining Context Awareness and Planning to Learn Behavior Trees from Demonstration [article]

Oscar Gustavsson, Matteo Iovino, Jonathan Styrud, Christian Smith
2022 arXiv   pre-print
Fast changing tasks in unpredictable, collaborative environments are typical for medium-small companies, where robotised applications are increasing. Thus, robot programs should be generated in short time with small effort, and the robot able to react dynamically to the environment. To address this we propose a method that combines context awareness and planning to learn Behavior Trees (BTs), a reactive policy representation that is becoming more popular in robotics and has been used
more » ... y in many collaborative scenarios. Context awareness allows to infer from the demonstration the frames in which actions are executed and to capture relevant aspects of the task, while a planner is used to automatically generate the BT from the sequence of actions from the demonstration. The learned BT is shown to solve non-trivial manipulation tasks where learning the context is fundamental to achieve the goal. Moreover, we collected non-expert demonstrations to study the performances of the algorithm in industrial scenarios.
arXiv:2109.07133v2 fatcat:midxsmrm7fbdbgcy5yn2gwug5e

Severe thiamine deficiency in eastern Baltic cod (Gadus morhua)

Josefin Engelhardt, Oscar Frisell, Hanna Gustavsson, Tomas Hansson, Rajlie Sjöberg, Tracy K. Collier, Lennart Balk, Ilaria Corsi
2020 PLoS ONE  
Writing -review & editing: Josefin Engelhardt, Oscar Frisell, Hanna Gustavsson, Tomas Hansson, Rajlie Sjöberg, Tracy K. Collier, Lennart Balk. 17. Balaghi M, Pearson WN.  ...  Balk L, Hägerroth PÅ, Gustavsson H, Sigg L, Åkerman G, Muñoz YR, et al. Widespread episodic thiamine deficiency in Northern Hemisphere wildlife.  ... 
doi:10.1371/journal.pone.0227201 pmid:31895939 pmcid:PMC6939936 fatcat:s7xo5pivejaffjqkyxairmlloq

Augmented Reality Smart Glasses in the Smart Factory: Product Evaluation Guidelines and Review of Available Products

Anna Syberfeldt, Oscar Danielsson, Patrik Gustavsson
2017 IEEE Access  
Augmented reality smart glasses (ARSG) are increasingly popular and have been identified as a vital technology supporting shop-floor operators in the smart factories of the future. By improving our knowledge of how to efficiently evaluate and select the ARSG for the shop-floor context, this paper aims to facilitate and accelerate the adoption of the ARSG by the manufacturing industry. The market for ARSG has exploded in recent years, and the large variety of products to select from makes it not
more » ... only difficult but also time consuming to identify the best alternative. To address this problem, this paper presents an efficient step-by-step process for evaluating the ARSG, including concrete guidelines as to what parameters to consider and their recommended minimum values. Using the suggested evaluation process, manufacturing companies can quickly make optimal decisions about what products to implement on their shop floors. This paper demonstrates the evaluation process in practice, presenting a comprehensive review of currently available products along with a recommended best buy. This paper also identifies and discusses topics meriting research attention to ensure that the ARSG are successfully implemented on the industrial shop floor. INDEX TERMS Augmented reality smart glasses, smart factory, augmented reality, industrial operator support. 9118 2169-3536
doi:10.1109/access.2017.2703952 fatcat:eghc56wpxfep5khrppuqbeupqm

Combining Context Awareness and Planning to Learn Behavior Trees from Demonstration [article]

Oscar Gustavsson, Matteo Iovino, Jonathan Styrud, Christian Smith
2021
Fast changing tasks in unpredictable, collaborative environments are typical for medium-small companies, where robotised applications are increasing. Thus, robot programs should be generated in short time with small effort, and the robot able to react dynamically to the environment. To address this we propose a method that combines context awareness and planning to learn Behavior Trees (BTs), a reactive policy representation that is becoming more popular in robotics and has been used
more » ... y in many collaborative scenarios. Context awareness allows to infer from the demonstration the frames in which actions are executed and to capture relevant aspects of the task, while a planner is used to automatically generate the BT from the sequence of actions from the demonstration. The learned BT is shown to solve non-trivial manipulation tasks where learning the context is fundamental to achieve the goal. Moreover, we collected non-expert demonstrations to study the performances of the algorithm in industrial scenarios.
doi:10.48550/arxiv.2109.07133 fatcat:jrjuqwopnrdnthbrco7mkwtiru

Geographies of networks and knowledge production [chapter]

Anna Gustavsson
2020 Communities and knowledge production in archaeology  
However, I Anna Gustavsson -9781526134561 Downloaded from manchesterhive.com at 05/05/2020 04:48:11PM via free access 6. 3 3 Examples of original illustrations and sketches sent to Oscar Montelius by  ...  In 1881 Oscar and Agda returned to continue the collection of data.  ... 
doi:10.7765/9781526134561.00013 fatcat:3bg3unctf5dd5nctoga77sqzve

Contents [chapter]

Julia Roberts, Kathleen Sheppard, Ulf R. Hansson, Jonathan R. Trigg
2020 Communities and knowledge production in archaeology  
Montelius and Italy 109 Anna Gustavsson 7 'More feared than loved': interactional strategies in late- nineteenth-century Classical archaeology: the case of Adolf Furtwängler 128 Ulf R.  ...  School at Athens 88 Thea De Armond Trigg -9781526134561 Downloaded from manchesterhive.com at 05/06/2020 08:25:59AM via free access 6 Geographies of networks and knowledge production: the case of Oscar  ... 
doi:10.7765/9781526134561.00002 fatcat:o565mkplb5gqpkmvrcglbcdyx4

Page 337 of Acta Physiologica Vol. 191, Issue 4 [page]

2007 Acta Physiologica  
Sydney, NSW Botker Hans Erik, Aarhus Canto Carles, Strasbourg Carmeliet Edward, Leuven Carpenter Mark, Vancouver, BC 2007 The Authors Journal compilation © 2007 Scandinavian Physiological Society, Casis Oscar  ...  Fort Worth, TX Ducroc Robert, Paris Eggington Stuart, Birmingham, UK Eiken Ola, Stockholm Eisner David, Manchester, UK Ekblom Orjan, Stockholm Eladari Dominique, Paris Engstr6m-Laurent Anna, Umea Essén-Gustavsson  ... 

Page 484 of National Union Catalog Vol. 18, Issue [page]

1958 National Union Catalog  
L QC780.Gi 338.4762148 30-6: 2603 ICU a OU FU CLSU Gustavsson, Alvar, 1902- Fardminnen. Orebro, 1960; 93 p. 22 cm. L Title. MnU Gustavsson, Alvar, 1902- eko.  ...  Gustafsson, Oscar, 1891- Fran Ariel till Belle Amie; harmodet 1947- 1957. ,Stockholm?, Lindfors Bokforlag ,1957, 93 p. illus. 28 cm. 1. Hairdressing. I. Title.  ... 

Page 193 of Anais Paulistas de Medicina E Cirurgia Vol. 43, Issue 2 [page]

1942 Anais Paulistas de Medicina E Cirurgia  
telliti, Alfio Trovato, Alvaro de Figueiredo Ferraz de Siqueira, Al- varo Leite Penteado, Antonio Cag- giano, Aref Buazar, Arlindo Con- de, Armando Rhein Filho, Attilio Maffei, Avedis Victor Nahas, Bo Gustavsson  ...  Rodrigues Alves, Luiz Heraldo da CAmara Lopes dos Anjos, Marcello Pio da _ Silva, Mario Crocco, Mario Ferreira Braz, Mario Finocchiaro, Octavio Della Serra, Octavio Ribeiro Ratto,Ores- tes Menegazzo, Oscar  ... 

Page 51 of Art Institute of Chicago. Bulletin of the Art Institute of Chicago Vol. 65, Issue SUPPLEMENT [page]

1970 Art Institute of Chicago. Bulletin of the Art Institute of Chicago  
Breen, Reference Librarian Jeffrey Chong, Clerical Assistant Marilyn Fillis, General Assistant, Slide and Photograph Department Martha Gabel, Reference Librarian, Slide and Photograph Department Ruth Gustavsson  ...  William Gray, Supervisor; John Anderson, Ernest Bell, Joe Carter, Dave Edwards, Elmo Griffin, John Hall, Melvin Harris, Willie Hodges, James Holt, John Jackson, David Jennings, Eddie Lewis, Robert Mannie, Oscar  ... 

Några bildningsfilosofiska perspektiv i synen på folkbildning

Kjell Gustavsson
2002 Utbildning & Demokrati  
Några bildningsfilosofiska perspektiv i synen på folkbildning Kjell Gustavsson Popular adult education is an action of various meanings and activities.  ...  Enligt Oscar Olsson skapas samhällsförändringar genom en "landsomfattande cirkeldemokrati" (Gustavsson 1991 , Vestlund 1996 .  ...  En person som inspirerats av Hans Larsson är Oscar Olsson -"studiecirkelns fader".  ... 
doi:10.48059/uod.v11i2.727 fatcat:uwflwifdtje4blghycrybgzvoi

Page 59 of Art Institute of Chicago. Bulletin of the Art Institute of Chicago Vol. 67, Issue SUPPLEMENT [page]

1972 Art Institute of Chicago. Bulletin of the Art Institute of Chicago  
Schoneman, Director Frances Vivian, Head Cataloguer Cecilia Chin, Head of Reference Department Ruth Gustavsson, Head of Slide and Photograph Department Robert Atherton, Typist and Exchange Assistant Rosann  ...  Anderson, John Binion, Thomas Buckner, Joe Carter, Nathan Cowan, Dave Edwards, Elmo Griffin, John Hall, Melvin Harris, Willie Hodges, James Holt, John Jackson, London Jenkins, Eddie Lewis, Robert Mannie, Oscar  ... 

Page 59 of Art Institute of Chicago. Bulletin of the Art Institute of Chicago Vol. 66, Issue SUPPLEMENT [page]

1971 Art Institute of Chicago. Bulletin of the Art Institute of Chicago  
Ruth Gustavsson, Cataloguer of Slides Ilse Hecht, Cataloguer of Slides Carolyn Hurt, Reference Librarian Ursula McGrath, Periodicals Assistant Daniel Starr, Circulation Assistant Ludwika Szklarek, Circulation  ...  Custodians: William Gray, Supervisor; John Anderson, Joe Carter, Dave Edwards, Elmo Griffin, James Hall, John Hall, Melvin Harris, Willie Hodges, James Holt, John Jackson, Eddie Lewis, Robert Mannie, Oscar  ... 

Special issue: professional practice, education and learning: a sociomaterial perspective

Madeleine Abrandt Dahlgren, Maria Gustavsson, Andreas Fejes
2018 Studies in Continuing Education  
Oscar Rantatalo and Ola Lindberg, turn their attention to the question of liminality, in their paper, Liminal practice and reflection in professional education.  ...  Madeleine Abrandt Dahlgren Linköping University, Sweden madeleine.abrandt.dahlgren@liu.se Maria Gustavsson Linköping University, Sweden Andreas Fejes Linköping University, Sweden  ... 
doi:10.1080/0158037x.2018.1508174 fatcat:5hohz674fvgazexaj7v2s724wm

Relationships between Karolinska Personality Scales and the new factors and facets of the Zuckerman-Kuhlman-Aluja Personality Questionnaire

Sergio Escorial, Anton Aluja, Luis F. García, Oscar García, Ángel Blanch
2015 Escritos de Psicología  
Besides, the SSP seems to present a robust three-factor structure (Aluoja, Voogne, Maron, Gustavsson, Võhma, & Shlik, 2009; Gustavsson et al., 2000) .  ...  The SSP instrument improved the psychometric properties and retained the validity of the original KPS (Gustavsson et al., 2000) .  ... 
doi:10.5231/psy.writ.2015.2304 fatcat:afklfybccvfl3n65gmdyqbrw4m
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