This paper is concerned with the estimation of unknown drift functions of stochastic differential equations (SDEs) from observations of their sample paths. We propose to formulate this as a non-parametric Gaussian process regression problem and use an Ito-Taylor expansion for approximating the SDE. To address the computational complexity problem of Gaussian process regression, we cast the model in

Experimental results from student and other non-representative convenience samples often suggest that men, on average, are more risk taking and competitive than women. We explore whether these gender preference gaps also exist in incentivized tasks in a simple random sample of the Swedish adult population. Our design comprises four different conditions to systematically explore how the experimenta

Random indexing (RI) is a lightweight dimension reduction method, which is used, for example, to approximate vector semantic relationships in online natural language processing systems. Here we generalise RI to multidimensional arrays and therefore enable approximation of higher-order statistical relationships in data. The generalised method is a sparse implementation of random projections, which

The rapid integration of physical systems with cyberspace infrastructure, the so-called Internet of Things, is likely to have a significant effect on how people interact with the physical environment and design information and communication systems. Internet-connected systems are expected to vastly outnumber people on the planet in the near future, leading to grand challenges in software engineeri

Med sina markanta valframgångar befäster högerradikala (populistiska) partier (RRP) sin närvaro i många västerländska demokratier. Det är väldokumenterat att etablerade partier ändrar sina politiska ståndpunkter och sin framtoning i valrörelser för att möta utmaningen från RRP:s, men hur dessa strategier utvecklas i parlamenten är fortfarande ett outforskat område. I den här avhandlingen fokuserarWith their increasing electoral success, radical right (populist) parties (RRPs) are consolidating their presence in many western democracies. It is well-documented that mainstream parties alter policy positions and issue salience during elections to meet the RRP challenge, yet how these strategies unfold in parliament remains an area to be explored. In this dissertation, I focus on two attributes

Med utgångspunkt i unikt arkivmaterial undersöker denna avhandling skillnader i hur västliga demokratier styrt radio och television. Genom en jämförande studie av fyra länder följer den de intressekonflikter som präglat etermediepolitiken — från de tidigaste radioregleringarna till kabel- och satellit-tv:s genomslag under slutet av nittonhundratalet.Snarare än att tolka politiska konflikter kring Using original archival evidence, this doctoral dissertation describes and explains differences in how Western democracies have governed radio and television, tracing interest group struggles over broadcasting in four countries from early radio policy to the rise of cable and satellite television in the late twentieth century.Rather than framing political conflicts over radio and television as a b

Private labels (PL) have gone from being a marginal and rather odd phenomenon in the gro-cery sector 20 years ago, to having a prominent role in the grocery retailing landscape, ac-counting for approximately 25-30% of what is sold in Swedish food stores today. Given the enormous turnover of the grocery trade, amounting to 326 billion SEK in 2023 according to Statistics Sweden (SCB), this is a rema

Den här rapporten syftar till att undersöka och analysera frågor kring handelns egna märkesvaror (EMV) och deras påverkan på konkurrens, priser, produktutveckling och maktbalans i dagligvarukedjan. Genom att betrakta EMV från ett konkurrensperspektiv, undersöker rapporten motiv och strategier bakom användningen av EMV, samt dess effekter på marginaler, prissättning och sortimentsbredd.Rapporten ko