We examined "descriptor collision" for several chemical fingerprint systems (MDL 320, Daylight, SMDL), and for a 2D-based descriptor set. For large databases (ChemNavigator and WOMBAT), the smallest collision rate remains around 5%. We systematically increase the "descriptor collision" rate (here termed "descriptor confusion"), in order to design a set of "descriptors to mask chemical structure...

Computer system IO (with accelerator, network, storage, graphics components) has been optimized to use descriptor-based direct memory access (DMA) operations to move data to and from relatively fast addressable system (or main) memory or cache structures. Traditionally, transactions between slower IO sub-systems and system memory have been done using a host bus/bridge adapter (HBA). Each IO int...

This paper considers the problem of computing the state reachable points, from the origin, of a linear constant coefficient first or higher order descriptor system. A method is proposed that allows to compute the reachable set in a numerically stable way. The original descriptor system is transformed into a strangeness-free system within the behavioral framework followed by a projection that se...

Development of various image descriptors has greatly contributed to the advancement in image retrieval. Image descriptors can be made invariant to various image changes. In this paper, a new image descriptor is described and its application in image retrieval is evaluated. The descriptor uses the autoencoder concept to reduce the dimension of the feature vector measuing various properties of a ...

The problem of robust D admissibility analysis and admissibilization is studied for uncertain descriptor linear systems. Two classes of uncertainties are considered in this paper, i.e., the norm bounded uncertainty and the polytopic uncertainty. With the introduction of some free matrices, a new necessary and sufficient condition for the considered descriptor linear system to be D admissible is...

This paper considers H∞ filtering for rectangular descriptor systems with unknown inputs that affect both the system and the output. An optimal H∞ filter is developed based on the maximum likelihood descriptor Kalman filtering (DKF) method. The developed H∞ filter serves as a unified solution to solve H∞ and Kalman filtering for descriptor systems and standard systems with or without unknown in...

Surface registration is the process that brings scans into a common coordinate system by aligning their overlapping components, which can be achieved by finding a few pairs of matched points on each scan pair using shape descriptors and employing the matches to compute an alignment transformation. This paper proposes a local voxelizer descriptor, and the key idea is to define a unique local ref...

In mobile robotics, it is necessary to have a robust and efficient way of describing the visual stream provided by a vision system to be used afterwards in tasks such as object recognition. Color histograms are a useful tool to capture and represent color properties of sets of images taken from a certain position. Since those images were obtained at different time and light conditions, their ap...

This paper proposes a novel descriptor called Mean-Variance-Median based Local binary pattern (MVM-LBP). The Median (MBP) calculates the difference between median of all pixels in 3 $$\times$$ pixel window and respective eight neighbours. main drawback MBP is that two different windows can have same code which not appropriate face recognition systems. To improve performance system, proposed (MV...