Browsing by Subject "Electricity prices"

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    The effects of electricity price changes on prices of other goods and services – evidence from Turkey
    (Routledge, 2020) Gedikkaya, A.; Varlık, S.; Berument, Hakan
    This article employs a Factor-Augmented Vector Autoregressive model to assess the effects of electricity price innovations on prices of other goods and services. Using monthly series from Turkish Domestic Producer Price Index (D-PPI) and Harmonized Index of Consumer Prices (HICP) components, the results from the analyses on D-PPI components suggest that (i) Machinery & Equipment (not elsewhere classified); Electrical Equipment; and Rubber & Plastic Products increase the most, while (ii) Tobacco Products; Crude Petroleum & Natural Gas; and Water Supply, Sewerage, Waste Management & Remediation Services increase the least. In addition, the results from the analyses on HICP components suggest that (iii) Housing, Water, Electricity, Gas & Other Fuels; Furnishings, Household Equipment & Maintenance; and Restaurants & Hotels increase the most, while (iv) Communications; Alcoholic Beverages, Tobacco & Narcotics; and Education increase the least.
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    A financial cost metric for result caching
    (ACM, 2013-07-08) Sazoğlu, Fethi Burak; Cambazoğlu, B. B.; Özcan, R.; Altıngövde, I. S.; Ulusoy, Özgür
    Web search engines cache results of frequent and/or recent queries. Result caching strategies can be evaluated using different metrics, hit rate being the most well-known. Recent works take the processing overhead of queries into account when evaluating the performance of result caching strategies and propose cost-aware caching strategies. In this paper, we propose a financial cost metric that goes one step beyond and takes also the hourly electricity prices into account when computing the cost. We evaluate the most well-known static, dynamic, and hybrid result caching strategies under this new metric. Moreover, we propose a financial-cost-aware version of the well-known LRU strategy and show that it outperforms the original LRU strategy in terms of the financial cost metric. Copyright © 2013 ACM.