@conference {416,
	title = {Heterogeneous Multirobot System for Exploration and Strategic Water Sampling},
	booktitle = {IEEE International Conference on Robotics and Automation (ICRA)},
	year = {2018},
	url = {https://doi.org/10.1109/ICRA.2018.8460759},
	author = {Sandeep Manjanna and Quattrini~Li, Alberto and Ryan N. Smith and Ioannis Rekleitis and Gregory Dudek}
}
@conference {417,
	title = {Multi-robot Dubins Coverage with Autonomous Surface Vehicles},
	booktitle = {IEEE International Conference on Robotics and Automation (ICRA)},
	year = {2018},
	url = {https://doi.org/10.1109/ICRA.2018.8460661},
	author = {Nare Karapetyan and Jason Moulton and Jeremy S. Lewis and Quattrini~Li, Alberto and Jason M. O{\textquoteright}Kane and Ioannis Rekleitis}
}
@article {331,
	title = {Strategies for coordinated multirobot exploration with recurrent connectivity constraints},
	journal = {Autonomous Robots},
	volume = {42},
	year = {2018},
	pages = {875{\textendash}894},
	abstract = {During several applications, such as search and rescue, robots must discover new information about the environment and, at the same time, share operational knowledge with a base station through an ad hoc network. In this paper, we design exploration strategies that allow robots to coordinate with teammates to form such a network in order to satisfy recurrent connectivity constraints{\textendash}-that is, data must be shared with the base station when making new observations at the assigned locations. Current approaches lack in flexibility due to the assumptions made about the communication model. Furthermore, they are sometimes inefficient because of the synchronous way they work: new plans are issued only once all robots have reached their goals. This paper introduces two novel asynchronous strategies that work with arbitrary communication models. In this paper, {\textquoteleft}asynchronous{\textquoteright} means that it is possible to issue new plans to subgroups of robots, when they are ready to receive them. First, we propose a single-stage strategy based on Integer Linear Programming for selecting and assigning robots to locations. Second, we design a two-stage strategy to improve computational efficiency, by separating the problem of locations{\textquoteright} selection from that of robot-location assignments. Extensive testing both in simulation and with real robots show that the proposed strategies provide good situation awareness at the base station while efficiently exploring the environment.},
	keywords = {Communication constraints, Exploration, Multirobot systems, Recurrent connectivity},
	doi = {10.1007/s10514-017-9652-y},
	author = {Jacopo Banfi and Quattrini~Li, Alberto and Ioannis Rekleitis and Francesco Amigoni and Nicola Basilico}
}
@conference {334,
	title = {Collaborative Sampling Using Heterogeneous Marine Robots Driven by Visual Cues},
	booktitle = {Proceedings of the Conference on Computer and Robot Vision (CRV)},
	year = {2017},
	abstract = {This paper addresses distributed data sampling in marine environments using robotic devices. We present a method to strategically sample locally observable features using two classes of sensor platforms. Our system consists of a sophisticated autonomous surface vehicle (ASV) which strategically samples based on information provided by a team of inexpensive sensor nodes. The sensor nodes effectively extend the observational capabilities of the vehicle by capturing georeferenced samples from disparate and moving points across the region. The ASV uses this information, along with its own observations, to plan a path so as to sample points which it expects to be particularly informative. We compare our approach to a traditional exhaustive survey approach and show that we are able to effectively represent a region with less energy expenditure. We validate our approach through simulations and test the system on real robots in field.},
	doi = {10.1109/CRV.2017.49},
	author = {Sandeep Manjanna and Johanna Hansen and Quattrini~Li, Alberto and Ioannis Rekleitis and Gregory Dudek}
}
@conference {332,
	title = {Multirobot Exploration for Building Communication Maps with Prior from Communication Models},
	booktitle = {Proceedings of the International Symposium on Multi-Robot and Multi-Agent Systems (MRS)},
	year = {2017},
	author = {Phani Krishna Penumarthi and Quattrini~Li, Alberto and Jacopo Banfi and Nicola Basilico and Francesco Amigoni and Jason O{\textquoteright}Kane and Ioannis Rekleitis and Srihari Nelakuditi}
}
@conference {333,
	title = {Multirobot Online Construction of Communication Maps},
	booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation (ICRA)},
	year = {2017},
	abstract = {The importance of communication in many multirobot information-gathering tasks requires the availability of reliable communication maps. These provide estimates of the radio signal strength and can be used to predict the presence of communication links between different locations of the environment. In the problem we consider, a team of mobile robots has to build such maps autonomously in a robot-to-robot communication setting. The solution we propose models the signal{\textquoteright}s distribution with a Gaussian Process and exploits different online sensing strategies to coordinate and guide the robots during their data acquisition. Our methods show interesting operative insights both in simulations and on real TurtleBot 2 platforms.},
	doi = {10.1109/ICRA.2017.7989300},
	author = {Jacopo Banfi and Quattrini~Li, Alberto and Nicola Basilico and Ioannis Rekleitis and Francesco Amigoni}
}
@conference {171,
	title = {Asynchronous Multirobot Exploration under Recurrent Connectivity Constraints},
	booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation (ICRA)},
	year = {2016},
	address = {Stockholm, Sweden},
	abstract = {In multirobot exploration under centralized control, communication plays an important role in constraining the team exploration strategy. Recurrent connectivity is a way to define communication constraints for which robots must
connect to a base station only when making new observations.
This paper studies effective multirobot exploration strategies under recurrent connectivity by considering a centralized and
asynchronous planning framework. We formalize the problem of selecting the optimal set of locations robots should reach, provide an exact formulation to solve it, and devise an approximation algorithm to obtain efficient solutions with a bounded loss of optimality. Experiments in simulation and on real robots
evaluate our approach in a number of settings.},
	author = {Jacopo Banfi and Alberto Quattrini~Li and Nicola Basilico and Ioannis Rekleitis and Francesco Amigoni}
}
@conference {335,
	title = {Data Correlation and Comparison from Multiple Sensors over a Coral Reef with a Team of Heterogeneous Aquatic Robots},
	booktitle = {International Symposium on Experimental Robotics (ISER)},
	year = {2016},
	abstract = {This paper presents experimental insights from the deployment of an ensemble of heterogeneous autonomous sensor systems over a shallow coral reef. Visual, inertial, GPS, and ultrasonic data collected are compared and correlated to produce a comprehensive view of the health of the coral reef. Coverage strategies are discussed with a focus on the use of informed decisions to maximize the information collected during a fixed period of time.},
	doi = {10.1007/978-3-319-50115-4_62},
	author = {Quattrini~Li, Alberto and Ioannis Rekleitis and Sandeep Manjanna and Nikhil Kakodkar and Johanna Hansen and Gregory Dudek and Leonardo Bobadilla and Jacob Anderson and Ryan N. Smith}
}
