Author Xinlian Liang Name of the doctoral dissertation Feasibility of Terrestrial Laser Scanning for Plotwise Forest Inventories Unit Department of Real Estate, Planning and Geoinformatics Publisher Finnish Geodetic Institute Series Publications of the Finnish Geodetic Institute Field of research Geoinformatics Manuscript submitted 5 April 2013 Date of the defence 4 October 2013 Permission to p...

Recurrence plots exhibit line structures which represent typical behaviour of the investigated system. The local slope of these line structures is connected with a specific transformation of the time scales of different segments of the phase-space trajectory. This provides us a better understanding of the structures occurring in recurrence plots. The relationship between the timescales and line...

This paper studies the discontinuity in the behavior of neighboring integral curves. Discontinuity is measured by a number of selected attributes of the integral curves. A variety of attribute fields are defined. The attribute value at any given spatio-temporal point in these fields is assigned the attribute of the integral curve that passes through this point. This encodes the global behavior ...

Consider real-time exploration of large multidimensional spatiotemporal datasets with billions of entries, each defined by a location, a time, and other attributes. Are certain attributes correlated spatially or temporally? Are there trends or outliers in the data? Answering these questions requires aggregation over arbitrary regions of the domain and attributes of the data. Data cubes are a we...

Many solutions to cost-sensitive classification (and regression) rely on some or all of the following assumptions: we have complete knowledge about the cost context at training time, we can easily re-train whenever the cost context changes, and we have technique-specific methods (such as cost-sensitive decision trees) that can take advantage of that information. In this paper we address the pro...

Many solutions to cost-sensitive classification (and regression) rely on some or all of the following assumptions: we have complete knowledge about the cost context at training time, we can easily re-train whenever the cost context changes, and we have technique-specific methods (such as cost-sensitive decision trees) that can take advantage of that information. In this work we address the prob...

Nowadays there is a clear trend towards using methods and tools that can develop multi-agent systems (MAS) capable of performing dynamic selforganization when they detect changes in the environment. Moreover, the ideas that model the interactions of a multi-agent system cannot be related only to the agents and their communication skills in gaining strength, but it is necessary to use the concep...

We present a new method to stabilize the three term AVO inversion using curvelet and wavelet transforms. Curvelets are basis functions that effectively represent otherwise smooth objects having discontinuities along smooth curves. The applied formalism explores them to make the most of the continuity along reflectors in seismic images. Combined with wavelets, curvelets are used to denoise the d...