Sökning: "Information hypothesis"

Visar resultat 1 - 5 av 472 avhandlingar innehållade orden Information hypothesis.

1. 1. Information and financial markets

   Författare :Stefan Anchev; Jörgen Hellström; Rickard Olsson; Juha-Pekka Kallunki; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Information; dissemination of information; production of private information; information disadvantage; investor base; stock return anomalies; stock price informativeness; quantity of firm disclosure; less sophisticated individual investors;

   Sammanfattning : The results in this thesis are consistent with the hypotheses that: 1) the incomplete dissemination of information across investors helps in explaining the occurrence and the persistence of cross-sectional stock return anomalies, 2) the properties of the investor base of a stock have implications for the informativeness of the stock's price and 3) a greater quantity of firm disclosure places less sophisticated investors at an information disadvantage. Overall, the thesis provides new empirical evidence about the role of information in financial markets. LÄS MER

3. 2. Information-Theoretic Generalization Bounds: Tightness and Expressiveness

   Författare :Fredrik Hellström; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; information theory; neural networks; generalization; statistical learning; meta learning; PAC-Bayes; Machine learning;

   Sammanfattning : Machine learning has achieved impressive feats in numerous domains, largely driven by the emergence of deep neural networks. Due to the high complexity of these models, classical bounds on the generalization error---that is, the difference between training and test performance---fail to explain this success. LÄS MER

4. 3. Information, Markets and Conflict : Essays on Development and Political Economics

   Författare :David Yanagizawa Drott; Jakob Svensson; La Ferrara Eliana; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Information; Mass Media; Propaganda; Market Information; Conflict; Genocide; Economics; Nationalekonomi; Economics; nationalekonomi;

   Sammanfattning : The thesis consists of four essays.The first essay, “The Strategic Determinants of U.S. Human Rights Reporting: Evidence from the Cold War”, uses a country-level panel dataset to test the hypothesis that the United States biases its human rights reports of countries based on the strategic value of these countries. LÄS MER

5. 4. Essays on Information and Conflicts of Interest in Stock Recommendations

   Författare :Erik Lidén; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Stock recommendations; Printed media; Price-pressure hypothesis; Information hypothesis; Journalists; Analysts; EMH; Initiations; Information asymmetry; Initial public offerings; Quiet period; Underwriter analysts.;

   Sammanfattning : This thesis brings together three separate empirical essays on the information and conflicts of interest in stock recommendations. The first essay analyzes stock-price reactions to recommendations published in printed Swedish media and also trading volumes at and around the publication day, bid/ask spreads, and the post-publication drift in recommended stocks for the period 1995-2000. LÄS MER

7. 5. Process oriented information management in construction

   Författare :Christian Lindfors; KTH; []
   Nyckelord :process orientation; information system; information system success; information management; project management;

   Sammanfattning : The construction industry is often accused of beingfragmented and inefficient in nature due to the lack ofcontinuity and repetitive behaviour in projects. For many yearsinformation technology has been put forward as a solution. But,despite the potentials, little gains have been harvested by thedevelopment of computerised information systems (IS). LÄS MER