Papers by Jose Armando Hernández López
2021 ACM/IEEE 24th International Conference on Model Driven Engineering Languages and Systems (MODELS), 2021
The automatic generation of software models is an important element in many software and systems ... more The automatic generation of software models is an important element in many software and systems engineering scenarios such as software tool certification, validation of cyber-physical systems, or benchmarking graph databases. Several model generators are nowadays available, but the topic of whether they generate realistic models has been little studied. The state-of-the-art approach to check the realistic property in software models is to rely on simple comparisons using graph metrics and statistics. This generates a bottleneck due to the compression of all the information contained in the model into a small set of metrics. Furthermore, there is a lack of interpretation in these approaches since there are no hints of why the generated models are not realistic. Therefore, in this paper, we tackle the problem of assessing how realistic a generator is by mapping it to a classification problem in which a Graph Neural Network (GnN) will be trained to distinguish between the two sets of models (real and synthetic ones). Then, to assess how realistic a generator is we perform the Classifier Two-Sample Test (C2ST). Our approach allows for interpretation of the results by inspecting the attention layer of the GNN. We use our approach to assess four state-of-the-art model generators applied to three different domains. The results show that none of the generators can be considered realistic.
Federal Reserve Bank of San Francisco, Working Paper Series, 2009
Federal Reserve Bank of San Francisco, Working Paper Series, 2011
We construct probability forecasts for episodes of price deflation (i.e., a falling price level) ... more We construct probability forecasts for episodes of price deflation (i.e., a falling price level) using yields on nominal and real U.S. Treasury bonds. The deflation probability forecasts identify two "deflation scares" during the past decade: a mild one following the 2001 recession, and a more serious one starting in late 2008 with the deepening of the financial crisis. The estimated deflation probabilities are generally consistent with those from macroeconomic models and surveys of professional forecasters, but they also provide highfrequency insight into the views of financial market participants. The probabilities can also be used to price the deflation option embedded in real Treasury bonds. We thank participants at the IBEFA-ASSA Session in Denver 2011 for helpful comments, especially our discussant James Wilcox. We thank James Gillan and Justin Weidner for excellent research assistance. The views in this paper are solely the responsibility of the authors and should not be interpreted as reflecting the views of the Federal Reserve Bank of San Francisco or the Board of Governors of the Federal Reserve System.
School Community Journal, 1999
The present study examined Latina mothers' acculturation and education levels with respect to var... more The present study examined Latina mothers' acculturation and education levels with respect to various sociocultural, personal, and contextual factors related to mothers' level of parental involvement. The sample consisted of 158 Latina mothers who were the primary care providers of their first grade children. The results indicated that although less acculturated Latinas reported less knowledge about school activities and more barriers to involvement, they also report higher levels of perceived efficacy relevant to parent involvement, higher educational expectations, and greater spousal support. The findings highlight the importance of examining the within-groups differences related to Latino populations and questions prevalent assumptions regarding the role of acculturation with regard to parental involvement.
Retos y oportunidades del desarrollo de los nuevos títulos en educación superior
Riegos Y Drenajes Xxi, 2002
Ceflegal Revista Practica De Derecho Comentarios Y Casos Practicos, 2008
SSRN Electronic Journal, 2003
The idea that regional economic performance affects bank health is intuitive and broadly consiste... more The idea that regional economic performance affects bank health is intuitive and broadly consistent with the aggregate banking data. That said, micro-level research on this relationship provides a mixed picture of the importance, size, and timing of regional variables for bank performance. This paper helps reconcile the heterogeneous findings of previous research by: (1) employing a unique "composite measure" of regional economic performance that combines several regional indicators into a single index; (2) constructing bank-specific measures of regional economic conditions, based on bank deposit shares, that account for banks' presence in several states; and (3) estimating models for all banks and intra-and interstate banks separately. Empirical results based on this bank-specific composite regional measure point to a tractable link between regional economic performance and bank health. The importance of regional variables holds for both intra-and interstate banks. Out-ofsample forecasts indicate that the composite index also helps tie down the relative riskiness of bank portfolios across states. Finally, although interstate banks do seem to diversify away some of their portfolio risk, our analysis suggests it is too soon to conclude that interstate banks are immune from regional influences.
Journal of Immigrant & Refugee Services, 2005
Abstract This chapter focuses on the differential family reunification issues experienced by Cuba... more Abstract This chapter focuses on the differential family reunification issues experienced by Cuban Marielitos and balseros upon entrance into the United States. Treatment recommendations, aimed at ameliorating the emotionally laden reunification issues, are ...
Review of Financial Studies, 2009
The views expressed here are solely those of the authors and should not be interpreted as reflect... more The views expressed here are solely those of the authors and should not be interpreted as reflecting the views of the Banco de España, the Eurosystem, the Federal Reserve Bank of San Francisco or the Board of Governors of the Federal Reserve System. We gratefully acknowledge the comments of Michael Weisbach (the Editor) and an anonymous referee as well as
Journal of Money, Credit, and Banking, 2004
We examine whether equity market variables, such as stock returns and equity-based default probab... more We examine whether equity market variables, such as stock returns and equity-based default probabilities, are useful to bank supervisors for assessing the condition of bank holding companies. Using an event study framework, we find that equity market variables anticipate supervisory ratings changes by up to four quarters and that the improvements in forecast accuracy arising from conditioning on equity market information are statistically significant. We develop an off-site monitoring model that easily combines supervisory and equity market information, and we find that the model's forecasts also anticipate supervisory ratings changes by several quarters. While the inclusion of equity market variables in the model does not improve forecast accuracy by much relative to simply using supervisory variables, we argue that equity market information should still be useful for forecasting supervisory ratings and should be incorporated into supervisory monitoring models.
Journal of Money, Credit and Banking, 2010
From the perspective of monetary policy, just as important as the behavior of actual inflation is... more From the perspective of monetary policy, just as important as the behavior of actual inflation is what households and businesses expect to happen to inflation in the future, particularly over the longer term. If people expect an increase in inflation to be temporary and do not build it into their longer-term plans for setting wages and prices, then the inflation created by a shock to oil prices will tend to fade relatively quickly. Some indicators of longer-term inflation expectations have risen in recent months, which is a significant concern for the Federal Reserve.
Journal of Money, Credit and Banking, 2014
We examine the impact of foreign underwriting activity on bond markets using issuelevel data in t... more We examine the impact of foreign underwriting activity on bond markets using issuelevel data in the Japanese "Samurai" and euro-yen bond markets. Firms choosing Japanese underwriters tend to be Japanese, riskier, and smaller. We find that Japanese underwriting fees, while higher overall on average, are actually lower after conditioning for issuer characteristics. Moreover, firms tend to sort properly in their choice of underwriter, in the sense that a switch in underwriter nationality would be predicted to result in an increase in underwriting fees. Finally, we conduct a matching exercise to examine the 1995 liberalization of foreign access to the "Samurai" bond market, using yen-denominated issues in the euro-yen market as a control. Foreign entry led to a statistically and economically significant decrease in underwriting fees in the Samurai bond market, as spreads fell by an average of 23 basis points. Overall, our results suggest that the market for underwriting services is partially segmented by nationality, as issuers appear to have preferred habitats, but entry increases market competition.
Journal of Banking & Finance, 2007
We examine the determinants of Japanese regional bank pricing-to-market decisions and their impac... more We examine the determinants of Japanese regional bank pricing-to-market decisions and their impact on the intensity of depositor discipline, in the form of the sensitivity of deposit growth to bank financial conditions. To obtain consistent estimates, we first model and estimate the bank pricing-to-market decision and then estimate the intensity of depositor discipline after conditioning for that decision. We find that banks were less likely to adopt market price accounting the larger were their unrealized securities losses. We also find statistically significant evidence of depositor discipline among banks that elected to price to market. Our results indicate that depositor discipline was more intense for the subset of banks that adopted market price accounting.
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Papers by Jose Armando Hernández López