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We describe a class of sparse latent factor models, called graphical factor models (GFMs), and relevant sparse learning algorithms for posterior mode estimation. Linear, Gaussian GFMs have sparse, orthogonal factor loadings matrices, that, in addition to sparsity of the implied covariance...
Persistent link: https://www.econbiz.de/10009475411
. ; In this paper we study the performance of several machine learning (ML) models for credit default prediction. We do so by …
Persistent link: https://www.econbiz.de/10012525481
Summary of Banco de España Working Paper no. 2105
Persistent link: https://www.econbiz.de/10012526625
Informes recientes muestran la creciente adopción en el sector financiero de técnicas de aprendizaje automático o machine learning (ML) en la gestión del riesgo de crédito. En este entorno, los supervisores se encuentran ante el reto de permitir que se maximicen las oportunidades derivadas...
Persistent link: https://www.econbiz.de/10012525231
Artículo de revista ; The use of artificial intelligence tools has escalated recently in all sectors of the economy owing, among other factors, to the growing volume of digital data and higher computational capacity. Major benefits may be reaped from applying these tools to the provision of...
Persistent link: https://www.econbiz.de/10012532407
Uno de los principales retos en el uso de modelos de aprendizaje automático, o machine learning en inglés (ML), en finanzas es cómo explicar sus resultados. Recientemente han aparecido técnicas de interpretabilidad con este objetivo, pero existe discusión sobre su fiabilidad. En este...
Persistent link: https://www.econbiz.de/10013267753
Recientes avances tecnológicos, como el almacenamiento masivo de datos y la computación en la nube, están dando lugar a un mayor uso de la inteligencia artificial en la economía y las finanzas, y modificando aspectos fundamentales tanto para entidades como para supervisores. En este...
Persistent link: https://www.econbiz.de/10013414504
optimal tree prediction, the estimated risk of the tree's prediction, and the reliability of the tree's risk estimation. We …
Persistent link: https://www.econbiz.de/10009431076
Following the events of September 11, 2001, many in the American public falsely believe they must choose between safety and privacy. This paper proposes an approach to technology (termed “Selective Revelation”) that allows data to be shared for surveillance purposes such that shared data...
Persistent link: https://www.econbiz.de/10009441111
In this thesis we consider how user-generated content that is assembled by different popular Web portals can be exploited for Multilingual Information Retrieval. We define the knowledge that can be derived from such portals as Social Semantics. We present to approaches, Cross-lingual Explicit...
Persistent link: https://www.econbiz.de/10009434662