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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Purity and torsors over Prüfer bases
纯度 扭转器 普吕弗底座
2023/4/21
In algebraic geometry, purity refers to a diverse range of phenomena in which certain invariants or categories associated to geometric objects are insensitive to the removal of closed subsets of large...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars： Purity and torsors over Prüfer bases
纯度 扭转器 普吕弗底座
2023/4/23
In algebraic geometry, purity refers to a diverse range of phenomena in which certain invariants or categories associated to geometric objects are insensitive to the removal of closed subsets of large...
Randomly Rotate Qubits Compute and Reverse --- IT-Secure Non-Interactive Fully-Compact Homomorphic Quantum Computations over Classical Data Using Random Bases
Homomorphic encryption Quantum cryptography Information-theoretic security
2019/9/16
Homomorphic encryption (HE) schemes enable processing of encrypted data and may be used by a user to outsource storage and computations to an untrusted server. A plethora of HE schemes has been sugges...
PLONK: Permutations over Lagrange-bases for Oecumenical Noninteractive arguments of Knowledge
zk-SNARKs SRS
2019/8/22
zk-SNARK constructions that utilize an updatable universal structured reference string remove one of the main obstacles in deploying zk-SNARKs [GKMMM, Crypto 2018]. The important work of Maller et al....
Algorithmic aspects of elliptic bases in finite field discrete logarithm algorithms
discrete logarithm problem finite fields elliptic representation
2019/7/10
Elliptic bases, introduced by Couveignes and Lercier in 2009, give an elegant way of representing finite field extensions. A natural question which seems to have been considered independently by sever...
AUTOMATED BUILDING DETECTION IN DENSE POINT CLOUD AND UPDATE OF OPEN SOURCE DATA BASES
Dense matching, Building detection Classification Digital Terrain Model openstreetmap point cloud
2018/11/9
In this paper a method of detecting buildings in dense populated city areas using a three-dimensional model, produced by aerial images, is described. Further to the detection of the outline of the bui...
The bases of (im)politeness evaluations: Culture, the moral order and the East–West debate
(im)politeness evaluation east–west debate moral order cultural values beliefs
2018/3/22
Evaluation is an important aspect of (im)politeness, and this article explores it
from an interdisciplinary perspective. It starts by considering the East–West debate
in politeness theory and argues...
On the smallest ratio problem of lattice bases
lattice reduction lattice enumeration algorithms smallest ratio problem
2016/12/10
Let (b1,…,bn)(b1,…,bn) be a lattice basis with Gram-Schmidt orthogonalization (b∗1,…,b∗n)(b1∗,…,bn∗), the quantities ∥b1∥/∥b∗i∥∥b1∥/∥bi∗∥ for i=1,…,ni=1,…,n play im...
We describe an asymptotically fast variant of the LLL lattice reduction algorithm. It takes as input a basis B∈Zn×nB∈Zn×n and returns a (reduced) basis CC of the Euclidean lattice LL spanned by BB, wh...
Automatic detection of changes in road data bases using satellite imagery
Automatic detection changes satellite imagery
2016/5/20
An automatic procedure is developed for detection of changes between an existing road database and a newly registered satellite image, rectified to an orthophoto.
Measurement Bases for Acquisitions and Mergers in Financial Accounting and in Commercial Law
Acquisition Acquisition method, Commercial law Financial Accounting Measurement base Merger Purchase method
2016/1/27
In association with transactions involving businesses, acquisitions and mergers, etc., commercial law stipulates the new measurement of business assets and thus also net business assets. Similarly, fi...
Scalable Column Concept Determination for Web Tables Using Large Knowledge Bases
Scalable Column Concept Web Tables Large Knowledge Bases
2016/1/23
Tabular data on the Web has become a rich source of struc-tured data that is useful for ordinary users to explore. Due to its potential, tables on the Web have recently attracted a number of studies w...
Lattice Point Enumeration on Block Reduced Bases
Lattice Algorithms Shortest Vector Problem Enumeration Algorithms
2016/1/5
When analyzing lattice-based cryptosystems, we often need to solve the Shortest Vector
Problem (SVP) in some lattice associated to the system under scrutiny. The go-to algorithms
in practice to solv...
Defining the biological bases of individual differences in musicality
musicality individual differences
2015/12/18
Advances in molecular technologies make it possible to pinpoint genomic factors associated with complex human traits. For cognition and behaviour,
identification of underlying genes provides new entr...
Automated Updating of Building Data Bases from Digital Surface Models and Multi-Spectral Images: Potential and Limitations
Change Detection Digital Surface Models Data Fusion
2015/12/4
A method for automatic updating of building data bases from Digital Surface Models (DSM) and a normalised difference vegetation index is evaluated. The DSM can be generated from Airborne Laserscanner ...