M22 - A Modern Visual Novel Framework

This paper presents a modern, open-source game engine/framework for the visual novel genre of interactive narrative. It takes the insights from the engines of visual novel games and the products made with them to produce a free engine that contains all the features and components required of a standard visual novel, and demonstrates its capabilities with a demo artefact. Visual novels provide authors with a powerful way of presenting their fiction and narratives, yet they are often considered less viable due to the costs required against the profit in sales, or because of their technical requirements to use. The M22 engine aims to address both these issues

Deepr: A Convolutional Net for Medical Records

Feature engineering remains a major bottleneck when creating predictive systems from electronic medical records. At present, an important missing element is detecting predictive regular clinical motifs from irregular episodic records. We present Deepr (short for Deep record), a new end-to-end deep learning system that learns to extract features from medical records and predicts future risk automatically. Deepr transforms a record into a sequence of discrete elements separated by coded time gaps and hospital transfers. On top of the sequence is a convolutional neural net that detects and combines predictive local clinical motifs to stratify the risk. Deepr permits transparent inspection and visualization of its inner working. We validate Deepr on hospital data to predict unplanned readmission after discharge. Deepr achieves superior accuracy compared to traditional techniques, detects meaningful clinical motifs, and uncovers the underlying structure of the disease and intervention space

Caustic Skeleton & Cosmic Web

We present a general formalism for identifying the caustic structure of an evolving mass distribution in an arbitrary dimensional space. For the class of Hamiltonian fluids the identification corresponds to the classification of singularities in Lagrangian catastrophe theory. Based on this we develop a theoretical framework for the formation of the cosmic web, and specifically those aspects that characterize its unique nature: its complex topological connectivity and multiscale spinal structure of sheetlike membranes, elongated filaments and compact cluster nodes. The present work represents an extension of the work by Arnol'd et al., who classified the caustics for the 1- and 2-dimensional Zel'dovich approximation. His seminal work established the role of emerging singularities in the formation of nonlinear structures in the universe. At the transition from the linear to nonlinear structure evolution, the first complex features emerge at locations where different fluid elements cross to establish multistream regions. The classification and characterization of these mass element foldings can be encapsulated in caustic conditions on the eigenvalue and eigenvector fields of the deformation tensor field. We introduce an alternative and transparent proof for Lagrangian catastrophe theory, and derive the caustic conditions for general Lagrangian fluids, with arbitrary dynamics, including dissipative terms and vorticity. The new proof allows us to describe the full 3-dimensional complexity of the gravitationally evolving cosmic matter field. One of our key findings is the significance of the eigenvector field of the deformation field for outlining the spatial structure of the caustic skeleton. We consider the caustic conditions for the 3-dimensional Zel'dovich approximation, extending earlier work on those for 1- and 2-dimensional fluids towards the full spatial richness of the cosmic web

Fermionite spinni polarisatsiooni ja massi mõju top-kvargipaari tekkel ja Higgsi bosoni lagunemisel

Väitekirja elektrooniline versioon ei sisalda publikatsiooneKõik, mida me näeme või saame katsuda, on tehtud aatomitest. Siiski on tänapäevane arusaam erinev Demokritose antiiksest arvamusest ja aatomid ei ole need kõige väiksemad ehituskivid. Tänapäevased maailma ehituskivid on elementaarosakesed nagu elektronid, kvargid ja bosonid. Käegakatsutava ning silmanähtava asja kokkupanemiseks on vaja hoomamatult suurt hulka selliseid ehituskive. Kui uurida kõige väiksemaid asju, siis ilmneb paratamatult, et nende käitumine ei vasta meie igapäevastele kogemustele põhinevatele ootustele. Kvantmehaanika maailmas on täiesti võimalik, et mõni asi on korraga kahes erinevas kohas ja et asjad on samaaegselt nii asjad kui ka lained. Lisaks teada-tuntud asju kirjeldavatele omadustele nagu mass või pikkus, on veel ka selliseid omadusi, mida üleüldse suurtele asjadele omistada ei saa, näiteks spinn. Käesoleva doktoritöö sisuks on mõnede konkreetsete elementaarosakestega toimuvate teatavate konkreetsete protsesside täpsem kirjeldamine. Uuritakse koos tekkinud top-kvargi ja selle antiosakese spinnide omavahelist seotust ehk korrelatsiooni ning kirjeldatakse leptoni mõju Higgsi bosoni lagunemisprotsessile. Arvutatakse spinn-spinn-korrelatsioonide esimest järku parandeid ning käsitletakse spinn-spinn-korrelatsioonide mõõtmise võimalust kvargi lagunemisproduktide liikumissuundade nurkade abil. Higgsi bosoni lagunemisprotsessi arvutamisel võetakse arvesse võimalike tekkivate leptonite masse ning leitakse leptoni massi mõju Higgsi bosoni lagunemise tõenäosusele. Arvutuste unikaalsus seisneb spinnide ja masside kaasamises ning tulemuste analüütilises väljenduses, mis võimaldab täpsemalt uurida sõltuvust erinevatest parameetritest ja arvutada tulemuste käitumist erinevatel piirjuhtudel. Need leiud heidavad valgust massi- ja spinniefektidele osakeste lagunemisel ja sellest juhinduvalt saab tulevastes eksperimentides läbi viia täpsemaid võrdlusi elementaarosakeste füüsika Standardmudeliga. Selle uurimuse eesmärgiks ei ole ühegi konkreetse tänapäevase käesoleva probleemi lahendamine. Motivatsiooniks ja liikumapanevaks jõuks hoopis inimkonna teadmiste horisondi nihutamine ja seeläbi tuleviku tehnoloogiatele vundamendi rajamine.Everything we see and touch in the world, is built up from atoms. However, different from Democritus’ antique opinion, atoms are not the fundamental building blocks. Nowadays’ elementary building blocks are elementary particles like electrons, quarks and bosons. Therefore, to make a tangible and visible thing, an unfathomable number of such tiny building blocks is necessary. If one studies the tiniest things, then it will be inevitably revealed that their behaviour does not comply with our expectations which are based on everyday experience. In the realm of quantum mechanics it is entirely possible for a particle to be in two places at once or to be simultaneously a thing and a wave. In addition to well-known properties that describe items like mass or length, there are some properties (like spin) that cannot be applied to big things. The essence of the thesis is a more precise description of some specific processes that happen to some specific particles. The correlation of spins of jointly created top quark and it’s antiparticle is studied as well as the effect of a lepton to the decay of Higgs boson. The first order corrections to the spin-spin correlation is calculated and opportunity for measuring spin-spin correlations through an angular analysis of movement of the decay products of quarks is discussed. In the calculation of the decay of Higgs boson the created lepton’s mass is taken into account and lepton mass effect to Higgs boson decay probability is found. The originality of the study stems from the inclusion of masses and spins and the analytic presentation of the results, which allows to analyse dependencies on different parameters in detail and to calculate the behaviour in different kinematical limits. These results help to guide future experiments and enable a more detailed comparison with the Standard Model of elementary particles. The aim of this study is not to solve any specific existing modern problem. The motivation and cause for this study is in pushing the boundary of the horizon of the knowledge of the humanity and thus laying a foundation for future technologies