Title: Risultati dellindagine sul Rischio Paese condotta con le metodologie MCDM e SOM
1Risultati dellindagine sul Rischio Paese
condotta con le metodologie MCDM e SOM
- Francesca Bernè, Mattia Ciprian
- francescab_at_econ.units.it
- mciprian_at_units.it
2Introduction - Overview of country risk-
Generation Models - Country data - Ratios
- An overview of country risk
- Modelling financial crisis the generation
approach - Financial crises an historical perspective
- Country risk assessment methodologies
- Country data and ratios
3- Objectives
- To define the field of country risk contry risk
includes different disciplines of economics,
finance, mathematics, geopolitics, sociology,
hystory - A review of the literature and of subjects
interested in country risk (Rating agencies,
specialized ranking firms, Corporate and
International institutions, investment banks,
credit institutions, etc.)
Introduction - Overview of country risk-
Generation Models - Country data - Ratios
4- Objectives
- 3) To study which methodologies are used to
assess country risk at present and which are the
main factors (qualitative and quantitative) - 4) To develop a model for assessing country risk
with the purpose to obtain a country risk ranking
introducing innovative methodologies in
comparison with traditional and common techniques
(discrimant analysis, logit and probit models,
artificial neural networks)
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
5- Overview of country risk
- The literature of country risk uses several
terminologies and has generated various streams
depending on the definition that is retained, the
sources of risks, the nature of investment, the
historical context and the chosen methodology - There is not a unique definition
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
6- Overview of country risk
- Definition and sources of country risk (Meldrum
2000) - Economic risk
- Transfer risk
- Exchange rate risk
- Localization risk
- Credit sovereign rating risk
- Socio - Political risk
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
7- Overview of country risk
- Meldrum (2000) the six different sources of
risks influence in various ways each investment
category - Foreign direct investment
- Commercial bank loans
- Portofolio investment
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
8- Overview of country risk
- Country risk stems for the possibility that a
foreign countrys borrower, importer or a
corporate partner may be unable or unwilling to
fulfill its contractual obligations toward a
foreign lender, exporter and/or investors.
Contractual obligations can be related to loans,
bonds, equity investment, export and import and
procurement of services. - Quantitative analysis and qualitative analysis
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
9- Overview of country risk
- Qualitative approach is important and it refers
to the assessment of the economic, financial and
socio-political fundamentals that can affect the
investment return prospects in a foreign country - To understand and measure country risk it is
important not only to focus on a range of ratios
or indices the qualitative analysis aims at
trackling the structures of a countrys
development process to shed light on the
underlying strenghts and weakness
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
10- Overview of country risk
- The approach cannot ignore numerical data, with a
attention to - the social and welfare indicators of the
devolopment process - macroeconomical fundamentals (structures of
growth) - external indebtedness, liquidity and solvency
analysis - domest financial system situation
- e) assessment of the governance and trasparency
issues - f) evaluation of political stability.
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
11- Overview of country risk
- Questions and answers
- Two countries facing similar ratios and financial
indicators may face considerably different
socio-economic structure - Quantitative data either are not available on
time, or data are incomplete, wrong or distorded - Interpretation is made difficult given mixed and
often contradictory signals - Figures seem sound but are subjects to
considerable volatility due to regional contagion
- Changes in geo-political structure of the world
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
12- Overview of country risk
- Cofaces Deputy-Directors Clei (1998)
- .Risks specificties of ranked countries cannot
be accounted for by a uniform approach. It is
thus important to consider ratings as helpful
decision-making tools that must be supported by a
more qualitative analysis integrating all these
specificities..
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
13- First-generation model (Krugman, 1979)
- Fixed exchange rate budget deficit monetary
expansion drop in reserves - financial crisis devaluation
- Second-generation crisis model (Obstfeld, 1985)
- Unsustainable fixed parity current account
deficit - Portofolio deficit capital outflows reserves
exhaustion - Exchange rate depreciation
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
14- Third-generation crisis model (Krugman, 1997
Radelet and Sachs, 1998) - Weak financial intermediation institutions bad
governance - Speculative short-term capital flows debt
overhang and official reserve drop - Financial panic and bank liquidations
Introduction - Overview of country risk -
Generation Models - Country data - Ratios
15Introduction - Overview of country risk
Generation Models Country data - Ratios
- Second-generation adjusted model of
self-fulfilling crisis (Williamson, 2002) - Macroeconomic fundamentals in intermediate
situation (growth, inflation, current account,
budget, debt) - Multiple equilibria depending on
- regional contanimation speculative attacks
bad equilibrium default - robust adjustement credibility good
equilibrium sustainable debt servicing
capital market access
16- Other models
- Maturity mismatch
- Currency mismatch
Introduction - Overview of country risk
Generation Models Country data - Ratios
17- Historical perspective
- Mexican crisis (1994)
- Russian crisis (1998)
- Asian crisis (1997-1998)
- Argentina crisis (2001-2002)
Introduction - Overview of country risk
Generation Models Country data - Ratios
18- Country data
- Sources
- UNDP
- WORLD BANK
- COFACE
- OECD
- UNCTAD
- ICRG
- IMF
- CIA
- ISAE
Introduction - Overview of country risk
Generation Models Country data - Ratios
19Country data
- Countries (all the world)
- Europa and CSI, Americas, Asia and Oceania,
Nord Africa and Middle East, Sub-saharian Africa
52 Countries, 22 ratios, year 2004, Argentina
2001-2002 Source CIA, COFACE
- Emerging Market Countries, Developing Countries,
Least Development Countries
27 Countries, 18 ratios, period 1983 - 2000 (18
years) Source ISAE
Introduction - Overview of country risk
Generation Models Country data - Ratios
20Ratios
birth rate, death rate, debt external, exports
(variation ), imports (variation), GDP
purchasing power parity, GDP no purchasing power
parity, inflation rate, public balance/GDP,
growth, net migration rate, investment, reserve
foreign exchange gold, infantility mortality
rate, life expectancy at birth, fertility rate,
labour force, internet users, industrial
production growth rate electricity consumption,
electricity production, oil consumption
Introduction - Overview of country risk
Generation Models Country data - Ratios
21Ratios
default SPs, default state t-1 SPs, GDP
billion , GDP growth rate, rate of inflation,
exchange rate in purchasing power parity,
average interest rate, exports, foreign direct
investment, imports, total interest payment,
international reserve, total external debt,
short term external debt, interest on short term
external debt, total debt service, long term
debt service, current account balance
Introduction - Overview of country risk
Generation Models Country data - Ratios
22SUMMARY
- Introduction
- Tools MCDM
- SOM
- Results
- Conclusions.
23Introduction Tools (MCDM SOM) - Results
Conclusions
- INTRODUCTION
- The increasing complexity of financial problems
over the past decades has driven analysts to
develop and adopt more sophisticated quantitative
analysis techniques furthermore, in the last
years, is growing the opinion that the criterion
to guide financial decisions has to be
multidimensional.
24Introduction Tools (MCDM SOM) - Results
Conclusions
MCDM
- Decision has inspired reflection of many thinkers
since the ancient times. The great philosophers
Aristotle, Plato, and Thomas Aquinas, to mention
only a few names, discussed the capacity of
humans to decide and in some manners claimed that
this possibility is what distinguishes humans
from animals. - Classically, for example in economics, it is
supposed that preference can be represented by a
utility function assigning a numerical value to
each action such that the more preferable an
action, the larger its numerical value. Moreover,
it is very often assumed that the comprehensive
evaluation of an action can be seen as the sum of
its numerical values for the considered criteria.
Let us call this the classical model. It is very
simple but not too realistic J. Figueira, S.
Greco, M. Ehrgott Multiple Criteria Decision
Analysis STATE OF THE ART SURVEYS Kluwer,
2005.
25Introduction Tools (MCDM SOM) - Results
Conclusions
CODASID
- This method attempts to generate a clear
preference order for alternative designs. - The basic concept is that the best action should
have the shortest distance from an ideal design
and the greatest from a negative ideal design. - The inputs required by CODASID are
- a matrix containing the objects to be explored
during the decision procedure - a vector of weights expressing the relative
importance of one attribute with respect to the
others.
26Introduction Tools (MCDM SOM) - Results
Conclusions
SOM
- The self-organizing map (SOM) is a new, effective
software tool for the visualization of
high-dimensional data. It implements an orderly
mapping of a high-dimensional distribution onto a
regular low-dimensional grid. - Thereby it is able to convert complex, non-linear
statistical relationships between
high-dimensional data items into simple geometric
relationships on a low-dimensional display. - As it compresses information while preserving the
most important topological and metric
relationships of the primary data items on the
display, it may also be thought to produce some
kind of abstractions. - The self-organizing map, T. Kohonen,
Neurocomputing 21, 1998.
27 Results Evolution of developing countries
- We have obtained very encouraging results some
of they are represented in figure. - It is worth to note that every important fallout,
historically occurred to a country, has been
detected as a rank variation.
Introduction Tools (MCDM SOM) - Results (MCDM)
Conclusions
28 Results Evolution of developing countries
Introduction Tools (MCDM SOM) - Results (MCDM)
Conclusions
29Results Ranking obtained from CODASID
Introduction Tools (MCDM SOM) - Results (MCDM)
Conclusions
30Results SOM
- We have conducted two kinds of analysis on data
- factor study and individuation of local
correlations in order to understand the logics
joining the economics and social aspects of
countries we trained a rectangular map with
20x10 hexagonal nodes during 15000 cycles - a clustering analysis based on credit risks, to
produce a visual representation, and to verify
the World Bank's classification according to the
income level.
Introduction Tools (MCDM SOM) - Results (SOM)
Conclusions
31Factor study
- We have obtained, as foreseen by us, some obvious
relations as between Energy Consumption and
Energy Production. - The correlation is 0,963
Introduction Tools (MCDM SOM) - Results (SOM)
Conclusions
32Factor study - Local correlation
- After all SOMs are very powerful in showing, in
certain areas, the non-linear dependencies as in
fig. The statistical correlation between the
factors GDP Growth Rate and Industrial Production
Growth Rate is very low 0,347.
Introduction Tools (MCDM SOM) - Results (SOM)
Conclusions
33Cluster analysis
Introduction Tools (MCDM SOM) - Results (SOM)
Conclusions
34Conclusions
As Meldrum said in a recent work a company needs
to examine the relationship between risk and its
businesses to make sure risk measures actually
help the company improve its business decisions
an additional risk is represented by country
risk. In our paper we show how SOM and MCDM could
be used as well tools to analyze this risk both
proved efficient in handling many data together
and producing a consistent classification of
countries according to their risk level. The
results have been compared with other recent
works.
Introduction Tools (MCDM SOM) - Results
Conclusions