35,241 research outputs found
The use of intellectual capital information by sell-side analysts in company valuation
This paper investigates the role of intellectual capital information (ICI) in sell-side analystsâ fundamental analysis and valuation of companies. Using in-depth semi-structured interviews, it penetrates the black box of analystsâ valuation decision-making by identifying and conceptualising the mechanisms and rationales by which ICI is integrated within their valuation decision processes. We find that capital market participants are not ambivalent to ICI, and ICI is used: (1) to form analystsâ perceptions of the overall quality, strengths and future prospects of companies; (2) in deriving valuation model inputs; (3) in setting price targets and making investment recommendations; and (4) as an important and integral element in analystâclient communications. We show that: there is a âpecking orderâ of mechanisms for incorporating ICI in valuations, based on quantifiability; IC valuation is grounded in valuation theory; there are designated entry points in the valuation process for ICI; and a number of factors affect analystsâ ICI use in valuation. We also identify a need to redefine âvalue-relevantâ ICI to include non-price-sensitive information; acknowledge the boundedness and contextuality of analystsâ rationality and motives of their ICI use; and the important role of analystâclient meetings for ICI communication
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Accounting quality under IFRS during stressed volatility: an examination of UK banks
This paper examines whether accounting quality is maintained for UK banks that report under the IFRS accounting standards during times of stressed market price volatility. We find that the UK banksâ accounting quality, measured from 1992 to 2008 using the relationship between total shareholdersâ equity and market price, experienced a significant decrease during the high levels of market price volatility in 2008. This paper contributes to research that examines the IFRS accounting standards and to the examination of accounting quality in banks during periods of stressed volatility. Furthermore, this study concludes by calling for the examination of methods and processes to mitigate risks that impact on accounting quality
Can Google searches help nowcast and forecast unemployment rates in the Visegrad Group countries?
Online activity of the Internet users has been repeatedly shown to provide a
rich information set for various research fields. We focus on the job-related
searches on Google and their possible usefulness in the region of the Visegrad
Group -- the Czech Republic, Hungary, Poland and Slovakia. Even for rather
small economies, the online searches of their inhabitants can be successfully
utilized for macroeconomic predictions. Specifically, we study the unemployment
rates and their interconnection to the job-related searches. We show that the
Google searches strongly enhance both nowcasting and forecasting models of the
unemployment rates.Comment: 22 pages, 2 figures, 3 table
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A business planning framework for WiMAX applications
Mobile networking refers to wireless technologies which provide communications between devices. Applications for mobile networking have a broad scope as they can be applied to many situations in either industrial or commercial sectors. The challenge for firms is to better match market-induced variability to the organizational issues and systems necessary for technological innovation. This chapter develops a business planning framework for mobile networking applications. This framework recognises the fluidity of the situation when trying to anticipate and model emerging wireless applications. The business planning framework outlined in this chapter is a generic model which can be used by companies to assess the business case for applications utilizing mobile networking technologies
Assessing Volatility Forecasting Models: Why GARCH Models Take the Lead
The paper provides a critical assessment of the main forecasting techniques and an evaluation of the superiority of the more advanced and complex models. Ultimately, its scope is to offer support for the rationale behind of an idea: GARCH is the most appropriate model to use when one has to evaluate the volatility of the returns of groups of stocks with large amounts (thousands) of observations. The appropriateness of the model is seen through a unidirectional perspective of the quality of volatility forecast provided by GARCH when compared to any other alternative model, without considering any cost component.volatility, GARCH, forecast, correlation, risk, heteroskedasticity
Stochastic Optimal Power Flow Based on Data-Driven Distributionally Robust Optimization
We propose a data-driven method to solve a stochastic optimal power flow
(OPF) problem based on limited information about forecast error distributions.
The objective is to determine power schedules for controllable devices in a
power network to balance operation cost and conditional value-at-risk (CVaR) of
device and network constraint violations. These decisions include scheduled
power output adjustments and reserve policies, which specify planned reactions
to forecast errors in order to accommodate fluctuating renewable energy
sources. Instead of assuming the uncertainties across the networks follow
prescribed probability distributions, we assume the distributions are only
observable through a finite training dataset. By utilizing the Wasserstein
metric to quantify differences between the empirical data-based distribution
and the real data-generating distribution, we formulate a distributionally
robust optimization OPF problem to search for power schedules and reserve
policies that are robust to sampling errors inherent in the dataset. A simple
numerical example illustrates inherent tradeoffs between operation cost and
risk of constraint violation, and we show how our proposed method offers a
data-driven framework to balance these objectives
Quantifying risk and uncertainty in macroeconomic forecasts
This paper discusses methods to quantify risk and uncertainty in macroeconomic forecasts. Both, parametric and non-parametric procedures are developed. The former are based on a class of asymmetrically weighted normal distributions whereas the latter employ asymmetric bootstrap simulations. Both procedures are closely related. The bootstrap is applied to the structural macroeconometric model of the Bundesbank for Germany. Forecast intervals that integrate judgement on risk and uncertainty are obtained. --Macroeconomic forecasts,stochastic forecast intervals,risk,uncertainty,asymmetrically weighted normal distribution,asymmetric bootstrap
The Kalman-Levy filter
The Kalman filter combines forecasts and new observations to obtain an
estimation which is optimal in the sense of a minimum average quadratic error.
The Kalman filter has two main restrictions: (i) the dynamical system is
assumed linear and (ii) forecasting errors and observational noises are taken
Gaussian. Here, we offer an important generalization to the case where errors
and noises have heavy tail distributions such as power laws and L\'evy laws.
The main tool needed to solve this ``Kalman-L\'evy'' filter is the
``tail-covariance'' matrix which generalizes the covariance matrix in the case
where it is mathematically ill-defined (i.e. for power law tail exponents ). We present the general solution and discuss its properties on
pedagogical examples. The standard Kalman-Gaussian filter is recovered for the
case . The optimal Kalman-L\'evy filter is found to deviate
substantially fro the standard Kalman-Gaussian filter as deviates from 2.
As decreases, novel observations are assimilated with less and less
weight as a small exponent implies large errors with significant
probabilities. In terms of implementation, the price-to-pay associated with the
presence of heavy tail noise distributions is that the standard linear
formalism valid for the Gaussian case is transformed into a nonlinear matrice
equation for the Kalman-L\'evy filter. Direct numerical experiments in the
univariate case confirms our theoretical predictions.Comment: 41 pages, 9 figures, correction of errors in the general multivariate
cas
PROTONEGOCIATIONS - SALES FORECAST AND COMPETITIVE ENVIRONMENT ANALYSIS METHOD
Protonegotiation management, as part of successful negotiations of the organizations, is an issue for analysis extremely important for todayâs managers in the confrontations generated by the changes of the environments in the period of transition to markeprotonegocitions, sales forecast, competitive advantage
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