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Hiding Sensitive Trajectory Patterns
Seventh IEEE International Conference on Data Mining Workshops (ICDMW 2007), 2007Spatio-temporal traces left behind by moving individuals are increasingly available. On the one hand, mining this kind of data is expected to produce interesting behavioral knowledge enabling novel classes of mobility applications; but on the other hand, due to the peculiar nature of position data, mining it creates important privacy concerns.
ABUL O +3 more
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A probabilistic likelihood approach to trajectory sensitivity
Automatica, 1974Comparative trajectory sensitivity is investigated with respect to small probabilistic perturbations in initial state and plant parameters when a neighboring feedback control rather than the nominally equivalent open-loop control is used. The uncertainty in initial state and plant parameters is modeled by jointly normally distributed random variables ...
Y. Hontoir, Jose B. Cruz Jr.
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A sensitivity approach to optimal spline robot trajectories
Automatica, 1991Abstract A robot trajectory planning problem is considered. Using interpolating cubic splines as joint space trajectories, the path is parametrized in terms of the n-1 time intervals between the η knots. A minimum time optimization problem is formulated under maximum dynamic torque and maximum velocity constraints and solved by means of a first order
DE LUCA, Alessandro +2 more
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Optimization with trajectory sensitivity considerations
IEEE Transactions on Automatic Control, 1976A new algorithm is presented for reducing trajectory sensitivity for the optimal linear regulator problem. Results for a first-order example yield improvements over existing methods.
Byrne, P. C., Burke, M.
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Rate sensitivity of fracture trajectory
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1997Abstract The coupling of crack growth rate with the crack trajectory is critical for adequate modeling and control of hydraulic fracture initiation and growth and has many important field applications. The identification of optimal breakdown rate for minimizing the near-wellbore fracture tortuosity and the evaluation of fracture penetration depth in ...
A. Chudnovsky +4 more
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Infant sensitivity to trajectory forms.
Journal of Experimental Psychology: Human Perception and Performance, 2001The authors investigated whether infants are sensitive to visual event trajectory forms, and whether they are sensitive to the underlying dynamics of trajectory forms. The authors habituated 8-month-old infants to a videotaped event run either forward or reversed in time and then switched them to the same event run in the opposite direction.
E A, Wickelgren, G P, Bingham
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Reducing metric sensitivity in randomized trajectory design
Proceedings 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems. Expanding the Societal Role of Robotics in the the Next Millennium (Cat. No.01CH37180), 2002This paper addresses the trajectory design for generic problems that involve: (1) complicated global constraints that include nonconvex obstacles, (2) nonlinear equations of motion that involve substantial drift due to momentum, and (3) a high-dimensional state space.
Peng Cheng 0009, Steven M. LaValle
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On minimization of trajectory sensitivity
International Journal of Control, 1968The paper explores the engineering potential of incorporating quadratic sensitivity terms in linear optimization problems as a means of sensitivity reduction to plant-parameter deviations in linear feedback control systems.
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Minimal parametric sensitivity trajectories for nonlinear systems
2013 American Control Conference, 2013Trajectory optimization techniques can be used to minimize error norms on both state and controls with respect to a reference. However, without sufficient control authority, resulting controllers can be sensitive to variations in model parameters. This paper presents a method to incorporate parametric sensitivity in optimal control calculations to ...
Alex Ansari, Todd D. Murphey
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On trajectory sensitivity in optimal control
Proceedings of the IEEE, 1969Available results are summarized on the comparative trajectory sensitivities of nominally equivalent open-loop and closed-loop optimal control systems.
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