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172 results on '"Bernardini, Sara"'

1. Learning Interpretable Heuristics for WalkSAT

Author

Interian, Yannet and Bernardini, Sara

Subjects
Computer Science - Artificial Intelligence
Abstract

Local search algorithms are well-known methods for solving large, hard instances of the satisfiability problem (SAT). The performance of these algorithms crucially depends on heuristics for setting noise parameters and scoring variables. The optimal setting for these heuristics varies for different instance distributions. In this paper, we present an approach for learning effective variable scoring functions and noise parameters by using reinforcement learning. We consider satisfiability problems from different instance distributions and learn specialized heuristics for each of them. Our experimental results show improvements with respect to both a WalkSAT baseline and another local search learned heuristic.

Published
2023

5. Extracting Lifted Mutual Exclusion Invariants from Temporal Planning Domains

Author

Bernardini, Sara, Fagnani, Fabio, and Smith, David E.

Subjects
Computer Science - Artificial Intelligence
Abstract

We present a technique for automatically extracting mutual exclusion invariants from temporal planning instances. It first identifies a set of invariant templates by inspecting the lifted representation of the domain and then checks these templates against properties that assure invariance. Our technique builds on other approaches to invariant synthesis presented in the literature, but departs from their limited focus on instantaneous actions by addressing temporal domains. To deal with time, we formulate invariance conditions that account for the entire structure of the actions and the possible concurrent interactions between them. As a result, we construct a significantly more comprehensive technique than previous methods, which is able to find not only invariants for temporal domains, but also a broader set of invariants for non-temporal domains. The experimental results reported in this paper provide evidence that identifying a broader set of invariants results in the generation of fewer multi-valued state variables with larger domains. We show that, in turn, this reduction in the number of variables reflects positively on the performance of a number of temporal planners that use a variable/value representation by significantly reducing their running time.

Published
2017

8. Policy Conflict Resolution in IoT via Planning

Author

Göynügür, Emre, Bernardini, Sara, de Mel, Geeth, Talamadupula, Kartik, Şensoy, Murat, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Mouhoub, Malek, editor, and Langlais, Philippe, editor

Published
2017
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12. Squads of Adaptive Robots (SoAR): an architecture for operating heterogeneous fleets of marine robots

Author

Salavasidis, Georgios, primary, Saeharaseelan, Trishna, additional, Jones, Dan, additional, Kirk, James, additional, Fenucci, Davide, additional, Ramdhanie, Shivan, additional, Kamarudzaman, Izzat, additional, Morris, Ashley W., additional, Kingsland, Matthew, additional, Lorenzo, Alvaro, additional, Jones, Owain, additional, Wood, Terry, additional, Phillips, Alexander, additional, Sportich, Benjamin, additional, Bernardini, Sara, additional, Gibbs, Simon, additional, Godfrey, Ian, additional, Bennetts, Tom, additional, So, Dominic, additional, Boghurst, Mark, additional, Rooney, Tom, additional, Law, Jonathan, additional, Vincent, Iain, additional, Gould, Alan, additional, Simmonds, Rebecca, additional, and Wilson-Nash, Ruth, additional

Published
2023
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14. Automated Planning of Simple Persuasion Dialogues

Author

Black, Elizabeth, Coles, Amanda, Bernardini, Sara, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Kobsa, Alfred, editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Tanaka, Yuzuru, editor, Wahlster, Wolfgang, editor, Siekmann, Jörg, editor, Bulling, Nils, editor, van der Torre, Leendert, editor, Villata, Serena, editor, Jamroga, Wojtek, editor, and Vasconcelos, Wamberto, editor

Published
2014
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17. Building Autonomous Social Partners for Autistic Children

Author

Bernardini, Sara, Porayska-Pomsta, Kaska, Smith, Tim J., Avramides, Katerina, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Nakano, Yukiko, editor, Neff, Michael, editor, Paiva, Ana, editor, and Walker, Marilyn, editor

Published
2012
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18. Grandir dans une communauté de l’âge du cuivre en Italie : le rôle des enfants dans la vie quotidienne

Author

Bernardini, Sara, Goude, Gwenaëlle, Sayle, Kerry L., Gauthier, Caroline, Douville, Eric, Aranguren, Biancamaria, del Bove, Antonietta, Tafuri, Mary Anne, Laboratoire méditerranéen de préhistoire Europe-Afrique (LAMPEA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Scottish Universities Environmental Research Centre (SUERC), University of Glasgow-University of Edinburgh, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Soprintendenza Archeologica, Belle Arti e Paesaggio della Toscana, Firenze, Italy, Institut Català de Paleoecologia Humana i Evolució Social (IPHES), and Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA)

Subjects
Cultural Studies, Archeology, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, Anthropology, [SHS.ANTHRO-SE]Humanities and Social Sciences/Social Anthropology and ethnology, [SHS]Humanities and Social Sciences
Abstract

journées 2023 de la société d' anthropologie de Paris; International audience; The study of children’s role in past communities is difficult to face in archaeology. An active contribution of the children in everyday life varies within societies and cultures, as well as the social and biological definition of childhood. In Central Italy, specific funerary customs for subadults are documented in the Copper Age(4th-3rd millennia BCE) according to age classes. Here we propose to investigate childhood in an Italian Copper Age human group by a multi- isotope analysis (δ$^{13}$C, δ$^{15}$N,δ$^{34}$S and $^{87}$Sr/$^{86}$Sr) on dentine/enamel and bone of two adult individuals, from the funerary cave of Grotta Spinosa (Central Italy). The reconstruction of the dietary intake variation and of the displacements occurred during early-life was compared to the adult values and to those of the rest of the group analysed, as well as the few comparative data available from prehistoric Italy. The framework obtained from this multi-tissue and multi-isotope study helped to shed light on experiences previously only suggested by the archaeological and skeletal evidence (i.e. passage to adulthood, and children’s implication in community life). The interpretation of the isotopic data in the light of the archaeological and biological information available, from the cave and the region (Central Italy), allowed us to suggest an age interval (ca. 10-12 y.o.) in which the children were likely involved in the "adult’s" tasks. This exploratory study highlights the interest of geochemical tools applied on archaeological remains and the need to develop further high-resolution and multi-tissue sampling when investigating particular past population practices.

Published
2023
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19. A Longobard osteobiography. A multi-proxy life history of an elderly woman from Castel Trosino (Italy)

Author

Bernardini, Sara, Micarelli, Ileana, Zeppilli, Carlotta, Strani, Flavia, Bedecarrats, Samuel, Paine, Robert R., Bliquez, Lawrence, Gazzaniga, Valentina, Sayle, Kerry L., Goude, Gwenaëlle, Manzi, Giorgio, Tafuri, Mary Anne, Laboratoire méditerranéen de préhistoire Europe-Afrique (LAMPEA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), McDonald Institute for Archaeological Research, University of Cambridge, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Centre Michel de Boüard - Centre de recherches archéologiques et historiques anciennes et médiévales (CRAHAM), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), University of Washington [Seattle], Scottish Universities Environmental Research Centre (SUERC), and University of Glasgow-University of Edinburgh

Subjects
Cultural Studies, Archeology, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, Anthropology, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, [SHS]Humanities and Social Sciences
Abstract

The Longobard cemetery of Castel Trosino (Central Italy, c. 6th-8th CE) was excavated at the end of the 19th century, with more than two hundred burials recovered. Currently only 19 crania and a few mandibles are preserved. Among these crania, a case of trepanation is documented on an elderly woman (c. 50 y.o.): the medical treatment, or the condition that led to it, likely influenced her life history. A multidisciplinary investigation of the only available skeletal remains (cranial and denta...

Published
2023

20. Social Communication between Virtual Characters and Children with Autism

Author

Alcorn, Alyssa, Pain, Helen, Rajendran, Gnanathusharan, Smith, Tim, Lemon, Oliver, Porayska-Pomsta, Kaska, Foster, Mary Ellen, Avramides, Katerina, Frauenberger, Christopher, Bernardini, Sara, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Biswas, Gautam, editor, Bull, Susan, editor, Kay, Judy, editor, and Mitrovic, Antonija, editor

Published
2011
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27. Incremental Compilation-to-SAT Procedures

Author

Benedetti, Marco, Bernardini, Sara, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Hoos, Holger H., editor, and Mitchell, David G., editor

Published
2005
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30. Modelling Users’ Affect in Job Interviews: Technological Demo

Author

Porayska-Pomsta, Kaśka, Anderson, Keith, Damian, Ionut, Baur, Tobias, André, Elisabeth, Bernardini, Sara, Rizzo, Paola, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carberry, Sandra, editor, Weibelzahl, Stephan, editor, Micarelli, Alessandro, editor, and Semeraro, Giovanni, editor

Published
2013
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32. Food security reduces multiple HIV infection risks for high‐vulnerability adolescent mothers and non‐mothers in South Africa: a cross‐sectional study

Author

Cluver, Lucie, primary, Rudgard, William E., additional, Toska, Elona, additional, Orkin, Mark, additional, Ibrahim, Mona, additional, Langwenya, Nontokozo, additional, Kuo, Caroline, additional, Xaba, Nonhlanhla, additional, Roehm, Kai, additional, Smith, Michael, additional, Bernardini, Sara, additional, Giordana, Giovanni, additional, Mumma, Manaan, additional, Kingori, James, additional, Yates, Rachel, additional, and Sherr, Lorraine, additional

Published
2022
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39. Modular Robots for Enabling Operations in Unstructured Extreme Environments

Author

Sayed, Mohammed E., primary, Roberts, Jamie O., additional, Donaldson, Karen, additional, Mahon, Stephen T., additional, Iqbal, Faiz, additional, Li, Boyang, additional, Franco Aixela, Santiago, additional, Mastorakis, Georgios, additional, Jonasson, Emil T., additional, Nemitz, Markus P., additional, Bernardini, Sara, additional, and Stokes, Adam A., additional

Published
2022
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40. A multirobot system for autonomous deployment and recovery of a blade crawler for operations and maintenance of offshore wind turbine blades.

Author

Jiang, Zhengyi, Jovan, Ferdian, Moradi, Peiman, Richardson, Tom, Bernardini, Sara, Watson, Simon, Weightman, Andrew, and Hine, Duncan

Subjects
WIND turbine blades, OFFSHORE structures, AUTONOMOUS robots, GLOBAL Positioning System, OFFSHORE wind power plants, WIND turbines, DRONE aircraft
Abstract

Offshore wind farms will play a vital role in the global ambition of net zero energy generation. Future offshore wind farms will be larger and further from the coast, meaning that traditional human‐based operations and maintenance approaches will become infeasible due to safety, cost, and skills shortages. The use of remotely operated or autonomous robotic assistants to undertake these activities provides an attractive alternative solution. This paper presents an autonomous multirobot system which is able to transport, deploy and retrieve a wind turbine blade inspection robot using an unmanned aerial vehicle (UAV). The proposed solution is a fully autonomous system including a robot deployment interface for deployment, a mechatronic link‐hook module (LHM) for retrieval, both installed on the underside of a UAV, a mechatronic on‐load attaching module installed on the robotic payload and an intelligent global mission planner. The LHM is integrated with a 2‐DOF hinge that can operate either passively or actively to reduce the swing motion of a slung load by approximately 30%. The mechatronic modules can be coupled and decoupled by special maneuvers of the UAV, and the intelligent global mission planner coordinates the operations of the UAV and the mechatronic modules for synchronous and seamless actions. For navigation in the vicinity of wind turbine blades, a visual‐based localization merged with the location knowledge from Global Navigation Satellite System has been developed. A proof‐of‐concept system was field tested on a full‐size decommissioned wind‐turbine blade. The results show that the experimental system is able to deploy and retrieve a robotic payload onto and from a wind turbine blade safely and robustly without the need for human intervention. The vicinity localization and navigation system have shown an accuracy of 0.65 and 0.44 m in the horizontal and vertical directions, respectively. Furthermore, this study shows the feasibility of systems toward autonomous inspection and maintenance of offshore windfarms. [ABSTRACT FROM AUTHOR]

Published
2023
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44. A Multi-Robot Platform for the Autonomous Operation and Maintenance of Offshore Wind Farms

Author

Bernardini, Sara, Jovan, Ferdian, Jiang, Zhengyi, Moradi, Peiman, Richardson, Tom, Sadeghian, Rasoul, Sareh, Sina, Watson, Simon, and Weightman, Andrew

Abstract

With the increasing scale of offshore wind farm development, maintaining farms efficiently and safely becomes a necessity. The length of turbine downtime and the logistics for human technician transfer make up a significant proportion of the operation and maintenance (O&M) costs. To reduce such costs, future O&M infrastructures will increasingly rely on offshore autonomous robotic solutions that are capable of co-managing wind farms with human operators located onshore. In particular, unmanned aerial vehicles, autonomous surface vessels and crawling robots are expected to play important roles not only to bring down costs but also to significantly reduce the health and safety risks by assisting (or replacing) human operators in performing the most hazardous tasks. This paper portrays a visionary view in which heterogeneous robotic assets, underpinned by AI agent technology, coordinate their behavior to autonomously inspect, maintain and repair offshore wind farms over long periods of time and unstable weather conditions. They cooperate with onshore human operators, who supervise the mission at a distance, via the use of shared deliberation techniques. We highlight several challenging research directions in this context and offer ambitious ideas to tackle them as well as initial solutions.

Published
2020

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