Detail publikace

Kristoufek, L. & Janda, K. & Zilberman, D.: Correlations between biofuels and related commodities before and during the food crisis: A taxonomy perspective

Autor: prof. Ing. Karel Janda M.A., Dr., Ph.D., Zilberman, Janda
prof. PhDr. Ladislav Krištoufek Ph.D., Zilberman, Janda
Typ: Články v impaktovaných časopisech
Rok: 2012
Číslo: 0
Publikováno v: Energy Economics 34(5), pp. 1380-1391 PDF
Místo vydání:
Klíčová slova: Biofuels, Networks, Minimal spanning tree, Hierarchical tree
JEL kódy:
Granty: GAČR P402/11/0948 Vývoj analytického rámce pro energetickou bezpečnost: Ekonometrie časových řad, teorie her, meta-analýza a teorie regulace GAUK 5183/2010 (118310) Fraktalita a multifraktalita finančních trhů: metody a aplikace
Abstrakt: In this paper, we analyze the relationships between the prices of biodiesel, ethanol and related fuels and agricul- tural commodities with a use of minimal spanning trees and hierarchical trees. To distinguish between short- term and medium-term effects, we construct these trees for different frequencies (weekly and monthly). We find that in short-term, both ethanol and biodiesel are very weakly connected with the other commodities. In medium-term, the biofuels network becomes more structured. The system splits into two well separated branches — a fuels part and a food part. Biodiesel tends to the fuels branch and ethanol to the food branch. When the periods before and after the food crisis of 2007/2008 are compared, the connections are much stronger for the post-crisis period. This is the first application of this methodology on the biofuel systems.


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