Abstract: A system comprising: an input receiving an input document comprising text data and graphical data distinguishing hierarchically first and second portion of the text data; a display displaying said input document; a user interface allowing a user to add, in superposition with the displayed input document, boundary markers visually bounding said first and second text portions; and a processor arranged for, using the boundary markers added to the displayed input document, training a layout data analysis model to determine, in a further input document having further text data, if graphical data distinguishes hierarchically first and second portions of the further text data to display automatically boundary markers visually bounding said first and second portions of said further text data; the user interface allowing said user to correct the boundary markers displayed by the layout analysis model and the processor training the layout data analysis model using the corrected boundary markers.

Abstract: A graphical user interface comprising a data interface for receiving a set of text documents; a calculator for transforming each received text document into a vector of a n-dimensional manifold, n being larger than 2; transforming each n-dimensional manifold vector into a 2-D data; generating a first mapping of what 2-D data corresponds to what n-dimensional manifold vector; and generating a second mapping of what 2-D data corresponds to what received text document; a first user display arranged for displaying each 2-D data on a 2-D plane; a first user interface arranged for allowing a user to select a subset of the displayed 2-D data; wherein selecting said subset of 2-D data automatically selects the n-dimensional manifold vectors that correspond to said subset of 2-D data; and a second user display arranged for displaying a list of the text documents that correspond to said subset of 2-D data.