Refine
Year of publication
Document Type
- Doctoral Thesis (91)
- Article (55)
- Bachelor Thesis (17)
- Book (13)
- Master's Thesis (10)
- Conference Proceeding (4)
- Contribution to a Periodical (4)
- Habilitation (2)
- Preprint (2)
- Diploma Thesis (1)
Has Fulltext
- yes (199) (remove)
Is part of the Bibliography
- no (199) (remove)
Keywords
- Machine Learning (5)
- NLP (4)
- ALICE (3)
- Annotation (3)
- Text2Scene (3)
- TextAnnotator (3)
- Virtual Reality (3)
- mathematics education (3)
- Artificial intelligence (2)
- Blockchain (2)
- CBM experiment (2)
- Cellular Automaton (2)
- Computer Vision (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- FPGA (2)
- Machine learning (2)
- MathCityMap (2)
- Natural Language Processing (2)
- Positive polynomials (2)
- Simulation (2)
- Sums of arithmetic-geometric exponentials (2)
- Tracking (2)
- algorithms (2)
- 11N45 (1)
- 14N10 (secondary) (1)
- 2-SAT (1)
- 30F30 (1)
- 32G15 (primary) (1)
- AI Safety (1)
- ALICE experiment (1)
- Ageing (1)
- Agent (1)
- Akademische Zertifikate (1)
- Algebraic Hodge polynomial (1)
- Algebraic number theory (1)
- Anabelian Geometry (1)
- Anemia management (1)
- Approximation Algorithms (1)
- Arithmetic-geometric exponentials (1)
- Augmented reality (1)
- Autonomous Driving (1)
- Autophagy (1)
- Autorensystem (1)
- BIOfid (1)
- Bayesian Persuasion (1)
- Bayesian Statistics (1)
- Belief Propagation (1)
- Bert (1)
- Bifurcation Theory (1)
- Big Data (1)
- Big Data Benchmarks (1)
- Biodiversity (1)
- Bioinformatik (1)
- Biological sciences (1)
- Blood loss calculator (1)
- Blood loss formula (1)
- Blood management (1)
- Boundary elements (1)
- Brownian motion (1)
- C++ (1)
- CBM (1)
- COGNIMUSE (1)
- COVID-19 pandemic (1)
- Calderón operator (1)
- Capital gains taxes (1)
- Changes in labor markets (1)
- Classification (1)
- Cognitive Maps (1)
- Cognitive Spatial Distortions (1)
- Convexity (1)
- Convolution quadrature (1)
- Curvature measure (1)
- Cycle class (1)
- DDC (1)
- DNN Robustness (1)
- Data Acquisition (1)
- Datenanalyse (1)
- Deep Learning (1)
- Delegated Search (1)
- Demuškin groups (1)
- Dewey Decimal Classification (1)
- Diagnostic markers (1)
- Diagramme und Mathematiklernen (1)
- Digitale Pathologie (1)
- Distributional super-solution (1)
- Docker (1)
- Dual cone (1)
- Educational texttechnology (1)
- Event Buffering (1)
- Exponential sums (1)
- External-memory graph algorithms (1)
- Failure Erasure Code (1)
- Finance (1)
- Finite elements (1)
- Finitely many measurements (1)
- Fractional Laplacian (1)
- Functional magnetic resonance imaging (1)
- Future of work (1)
- GABAergic (1)
- GPGPU (1)
- GPU (1)
- Gale-dual pairs (1)
- Gaussian Processes (1)
- Gesten beim Mathematiklernen (1)
- Gesten-Lautsprache-Relationen (1)
- Google Bert (1)
- Graph Neural Networks (1)
- Graph generation (1)
- Graphentheorie (1)
- Ground Texture (1)
- HLT (1)
- HPC (1)
- Hadron-hadron interactions (1)
- Hardy’s inequality (1)
- Heavy Ion experiments (1)
- Hidden Markov Model (1)
- High energy physics (1)
- High-Level-Trigger (1)
- Higher education (1)
- Historical Document Analysis (1)
- Hodge conjecture (1)
- Hopf boundary lemma (1)
- Human factors (1)
- Human-enhancing technologies (1)
- I/O efficiency (1)
- Immunology (1)
- Individual differences (1)
- Information Retrieval (1)
- Intelligence augmentation (1)
- Inter-annotator agreement (1)
- Inverse Problem (1)
- IsoSpace (1)
- Kalman Filter (1)
- Kapitalertragsteuern (1)
- K–12 (1)
- LDPC Codes (1)
- Lattice path matroids (1)
- Leapfrog (1)
- Learning analytics (1)
- Limit mixed Hodge structures (1)
- Linear regression analysis (1)
- Linpack (1)
- Lipschitz–Killing measures (1)
- Localization (1)
- Loewner order (1)
- Log convex sets (1)
- Lyapunov exponents (1)
- Many-core computer architectures (1)
- Mathematical biosciences (1)
- Mathematik (1)
- Mathematikdidaktik (1)
- Mathtrails (1)
- Mc Kean martingale (1)
- MediaEval 2016 (1)
- Mobile (1)
- Mobile Learning (1)
- Moduli space of semi-stable sheaves (1)
- Mollifier decorrelation (1)
- Mollifier multiscale reconstruction and decomposition (1)
- Monocular Scene Flow (1)
- Monotonicity (1)
- Multiparametric MRI (1)
- Multiplicative convexity (1)
- Named entity recognition (1)
- Networking (1)
- Neural Networks (1)
- Neural networks (1)
- Neuronales Netz (1)
- Neuroscience (1)
- Nodal curves (1)
- Non-Fungible-Token (1)
- Non-negativity certificate (1)
- Nonlinear Schrödinger equation (1)
- Nonlocal Neumann conditions (1)
- Nonlocal normal derivative (1)
- Nonlocal operators (1)
- Online Algorithms (1)
- OpenStreetMap (1)
- OpenStreetMap quality evaluation (1)
- Optimal stopping problem (1)
- Optimales Stoppproblem (1)
- Orbital stability (1)
- Parallel Computing (1)
- Parallel and SIMD calculations (1)
- Partial Differential Equations (1)
- Pedestrian Detection (1)
- Perfect graphs (1)
- Permutation (1)
- Podospora anserina (1)
- Pointwise super-solution (1)
- Polyhedron (1)
- Positive function (1)
- Positive signomials (1)
- Potential methods in exploration (1)
- Preclinical research (1)
- Predictive markers (1)
- Processor (1)
- Prognostic markers (1)
- Prostate cancer (1)
- Protein-protein interaction (1)
- Pseudo-Riemannian manifolds (1)
- Public Administration (1)
- Public Transport (1)
- RADIUS Protocol (1)
- Radiomics (1)
- Random CSP (1)
- Random Graphs (1)
- Random Matrices (1)
- Random graphs (1)
- Reflexive polytopes (1)
- Regional Laplacian (1)
- Regional fractional Laplacian (1)
- Reinforcement Learning (1)
- Relativistic heavy-ion collisions (1)
- Robotics (1)
- SIMD (1)
- SLAM (1)
- STAR (1)
- STAR experiment (1)
- STEM education (1)
- Script Compression (1)
- Second-order cone (1)
- Semantic portal (1)
- Semantics (1)
- Semiotik nach C. S. Peirce (1)
- Sensory perception (1)
- Sign-changing solutions (1)
- Signed Birkhoff polytopes (1)
- Simplicial complexes (1)
- Smartphone (1)
- Specialized information service (1)
- Spectral Theory (1)
- Standard monomials (1)
- Standing waves (1)
- Strange particles (1)
- Student expectations (1)
- Sublinear circuit (1)
- Sums of non-negative circuit polynomials (1)
- Sums of nonnegative circuit polynomials (SONC) (1)
- Surgical blood loss (1)
- Symmetries (1)
- Symmetry Breaking (1)
- TRD (1)
- TTLab (1)
- Taxon (1)
- Text Annotation (1)
- TextImager (1)
- Themenklassifikation (1)
- Thermoelastic wave equation (1)
- Tobler's First Law (1)
- Tokenisierung (1)
- Toxicity (1)
- Traffic Scenes (1)
- Transcriptome analysis (1)
- Translational research (1)
- Transparent boundary conditions (1)
- UIMA (1)
- Unconditional polytopes (1)
- Unimodular triangulations (1)
- Unity (1)
- UrQMD (1)
- Valuation (1)
- Vannotator (1)
- Variational Methods (1)
- Verkehr (1)
- Virtual reality (1)
- Virtuelle Realität (1)
- Vision (1)
- Visual cortex (1)
- Volunteered Geographic Information (1)
- Wavelet decomposition (1)
- Weak super-solution (1)
- Web (1)
- Web Based Training (1)
- Weyl principle (1)
- affective computing (1)
- algebraic thinking (1)
- algorithm engineering (1)
- anabelian geometry (1)
- approximation algorithms (1)
- arithmetic geometry (1)
- autoregressive GANs (1)
- average-case complexity (1)
- barrel cortex (1)
- bioinformatics (1)
- bistable perception (1)
- central limit theorem (1)
- changepoint (1)
- chatbots (1)
- cluster computing (1)
- co-located collaboration analytics (1)
- coding theory (1)
- collaboration (1)
- collaboration analytics (1)
- computational thinking (1)
- computer vision (1)
- convergence (1)
- cover times (1)
- data parallel (1)
- data structures (1)
- debugging (1)
- deformable model (1)
- density maps (1)
- density visualization (1)
- digital distractions (1)
- digital learning (1)
- digitization (1)
- disaster risk management (1)
- discrepancy principle (1)
- distance learning (1)
- domains (1)
- dynamic algorithms (1)
- education (1)
- educational technology (1)
- emotion generation (1)
- emotion prediction (1)
- epilepsy, epileptogenesis, model, neuro-immune, neuroinflammation, blood brain barrier, seizure (1)
- equity and access to technology (1)
- erasure codes (1)
- error correction codes (1)
- event reconstruction (1)
- external memory (1)
- extreme value theory (1)
- field mapping (1)
- field papers (1)
- flood risk perception (1)
- flooding (1)
- fringe tree (1)
- fundamental theorem of asset pricing (1)
- generic tasks (1)
- graph theory (1)
- group speech analytics (1)
- hierarchical fields (1)
- high performance computing (1)
- independence number (1)
- information processing (1)
- information transfer (1)
- inquiry-based education (1)
- interactive data analysis (1)
- k-shortest path (1)
- literature review (1)
- machine learning (1)
- math trails (1)
- mathematics (1)
- media multitasking (1)
- mikroskopisch (1)
- multimodal (1)
- multimodal fusion (1)
- multimodal learning analytics (1)
- neural network decoder (1)
- neural networks (1)
- neural ordinary differential equation (1)
- neuronal morphology (1)
- neuroscience (1)
- no unbounded profit with bounded risk (1)
- octonions (1)
- online bayesian change point detection (1)
- optimal coding (1)
- optimality (1)
- outdoor activities (1)
- outdoors (1)
- parallel file systems (1)
- parallel programming (1)
- patricia trie (1)
- pedagogical roles (1)
- phase coding (1)
- point inversion (1)
- point process (1)
- positivity preserving property (1)
- privacy (1)
- privacy-enhancing technologies (1)
- problem solving (1)
- proportional transaction costs (1)
- protein assembly (1)
- protein structure (1)
- random energy model (1)
- random tree (1)
- real world problems ; (1)
- representation learning (1)
- respiratory complex I (1)
- satisfiability problem (1)
- section conjecture (1)
- security (1)
- security management (1)
- self-attention (1)
- self-control (1)
- self-regulation (1)
- semimartingales (1)
- shape prior (1)
- shortest path (1)
- social engineering (1)
- spectral cut-off (1)
- spike timing (1)
- spin group (1)
- statistical inverse problems (1)
- statistical shape analysis (1)
- stochastic integration (1)
- stochastic model (1)
- storage (1)
- sum-product algorithm (1)
- synaptogenesis (1)
- synchronous teaching (1)
- task design (1)
- teaching with technology (1)
- technology-enhanced learning (1)
- torsion function (1)
- transfer entropy (1)
- valuation (1)
- vectorization (1)
- video prediction (1)
- visual programming (1)
- ÖPNV (1)
- 𝒮-cone (1)
Institute
- Informatik und Mathematik (199) (remove)
We show the existence of additive kinematic formulas for general flag area measures, which generalizes a recent result by Wannerer. Building on previous work by the second named author, we introduce an algebraic framework to compute these formulas explicitly. This is carried out in detail in the case of the incomplete flag manifold consisting of all (p+1)-planes containing a unit vector.
We show how nonlocal boundary conditions of Robin type can be encoded in the pointwise expression of the fractional operator. Notably, the fractional Laplacian of functions satisfying homogeneous nonlocal Neumann conditions can be expressed as a regional operator with a kernel having logarithmic behaviour at the boundary.
We provide a Hopf boundary lemma for the regional fractional Laplacian (−Δ)sΩ, with Ω ⊂ RN a bounded open set. More precisely, given u a pointwise or weak super-solution of the equation (−Δ)s u = c(x)u in Ω, we show that the ratio u(x)∕(dist(x, 𝜕Ω))2s−1 is strictly Ω positive as x approaches the boundary 𝜕Ω of Ω. We also prove a strong maximum principle for distributional super-solutions.
We show explicit formulas for the evaluation of (possibly higher-order) fractional Laplacians (-△)ˢ of some functions supported on ellipsoids. In particular, we derive the explicit expression of the torsion function and give examples of s-harmonic functions. As an application, we infer that the weak maximum principle fails in eccentric ellipsoids for s ∈ (1; √3 + 3/2) in any dimension n ≥ 2. We build a counterexample in terms of the torsion function times a polynomial of degree 2. Using point inversion transformations, it follows that a variety of bounded and unbounded domains do not satisfy positivity preserving properties either and we give some examples.
The annotation of texts and other material in the field of digital humanities and Natural Language Processing (NLP) is a common task of research projects. At the same time, the annotation of corpora is certainly the most time- and cost-intensive component in research projects and often requires a high level of expertise according to the research interest. However, for the annotation of texts, a wide range of tools is available, both for automatic and manual annotation. Since the automatic pre-processing methods are not error-free and there is an increasing demand for the generation of training data, also with regard to machine learning, suitable annotation tools are required. This paper defines criteria of flexibility and efficiency of complex annotations for the assessment of existing annotation tools. To extend this list of tools, the paper describes TextAnnotator, a browser-based, multi-annotation system, which has been developed to perform platform-independent multimodal annotations and annotate complex textual structures. The paper illustrates the current state of development of TextAnnotator and demonstrates its ability to evaluate annotation quality (inter-annotator agreement) at runtime. In addition, it will be shown how annotations of different users can be performed simultaneously and collaboratively on the same document from different platforms using UIMA as the basis for annotation.
In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD)1. These partons subsequently emit further partons in a process that can be described as a parton shower2, which culminates in the formation of detectable hadrons. Studying the pattern of the parton shower is one of the key experimental tools for testing QCD. This pattern is expected to depend on the mass of the initiating parton, through a phenomenon known as the dead-cone effect, which predicts a suppression of the gluon spectrum emitted by a heavy quark of mass mQ and energy E, within a cone of angular size mQ/E around the emitter3. Previously, a direct observation of the dead-cone effect in QCD had not been possible, owing to the challenge of reconstructing the cascading quarks and gluons from the experimentally accessible hadrons. We report the direct observation of the QCD dead cone by using new iterative declustering techniques4,5 to reconstruct the parton shower of charm quarks. This result confirms a fundamental feature of QCD. Furthermore, the measurement of a dead-cone angle constitutes a direct experimental observation of the non-zero mass of the charm quark, which is a fundamental constant in the standard model of particle physics.
Polarization of Λ and ¯Λ hyperons along the beam direction in Pb-Pb collisions at √sNN=5.02 TeV
(2022)
The polarization of the Λ and ¯Λ hyperons along the beam (z) direction, Pz, has been measured in Pb-Pb collisions at √sNN=5.02 TeV recorded with ALICE at the Large Hadron Collider (LHC). The main contribution to Pz comes from elliptic flow-induced vorticity and can be characterized by the second Fourier sine coefficient Pz,s2=⟨Pzsin(2φ−2Ψ2)⟩, where φ is thhyperon azimuthal emission angle and Ψ2 is the elliptic flow plane angle. We report the measurement of Pz,s2 for different collision centralities and in the 30%–50% centrality interval as a function of the hyperon transverse momentum and rapidity. The Pz,s2 is positive similarly as measured by the STAR Collaboration in Au-Au collisions at √sNN=200 GeV, with somewhat smaller amplitude in the semicentral collisions. This is the first experimental evidence of a nonzero hyperon Pz in Pb-Pb collisions at the LHC. The comparison of the measured Pz,s2 with the hydrodynamic model calculations shows sensitivity to the competing contributions from thermal and the recently found shear-induced vorticity, as well as to whether the polarization is acquired at the quark-gluon plasma or the hadronic phase.
We show that throughout the satisfiable phase the normalized number of satisfying assignments of a random 2-SAT formula converges in probability to an expression predicted by the cavity method from statistical physics. The proof is based on showing that the Belief Propagation algorithm renders the correct marginal probability that a variable is set to “true” under a uniformly random satisfying assignment.
Der Inhalt dieser Arbeit ist die Entwicklung und Evaluation einer mobilen Webanwendung für die Annotation von Texten. Dem Benutzer ist es durch diese Webanwendung, im folgenden auch MobileAnnotator genannt, möglich Wörter und Textausschnitte zu kategorisieren oder auch mit Wissensquellen, zum Beispiel Wikipedia, zu verknüpfen. Der MobileAnnotator ist dabei für mobile Endgeräte ausgelegt und insbesondere für Smartphones optimiert worden.
Für die Funktionalität verwendet der MobileAnnotator die Architektur des bereits existierenden und etablierten TextAnnotators. Dieser stellt bereits eine Vielzahl von Annotations Werkzeugen bereit, von denen zwei auf den MobileAnnotator übertragen wurden. Da der TextAnnotator vollständig für einen Desktopbetrieb ausgelegt wurde, ist es jedoch nicht möglich diese Werkzeuge ohne Anpassungen für ein mobiles Gerät umzubauen. Der MobileAnnotator beschränkt sich somit auf ein Mindestmaß an Funktionen dieser Werkzeuge um sie dem Benutzer in geeigneter Art und Weise verfügbar zu machen.
Für die Evaluation der Benutzerfreundlichkeit des MobileAnnotator und dessen Werkzeuge wurde anschließend eine Studie durchgeführt. Den Probanten war es innerhalb der Studie möglich Aussagen über die Bedienbarkeit des MobileAnnotators zu treffen und einen Vergleich zwischen dem Mobile- und TextAnnotator zu ziehen.