Some e-shops present product attributes in structured form, but many others use the textual description only. Attributes of products are essential in automated product deduplication. We suggest methods for automated extraction of attributes and their values from product descriptions to a structural form. The structural data extracted from other e-shops are used as background knowledge.

This note is a resume of Jerry Hausman’s Nake course at the NAKE workshop in Den Haag, The Netherlands in June 2002. It presents an intuitive framework in which the impact of weak/invalid instruments on properties of di¤erent estimators can be analyzed while also suggesting a test to detect the presence of weak/invalid instruments.

In this paper, we show that the calibration to an implied volatility surface and the pricing of contingent claims can be as simple in a jump-diffusion framework as in a diffusion one. Indeed, after defining the jump densities as those of diffusions sampled at independent and exponentially distributed random times, we show that the forward and backward Kolmogorov equations can be transformed int...

We report on a long-term monitoring campaign of 1E 1841−045, the 12-s anomalous X-ray pulsar and magnetar candidate at the center of the supernova remnant Kes73. We have obtained approximately monthly observations of the pulsar with the Rossi X-ray Timing Explorer (RXTE) spanning over two years, during which time 1E 1841−045 is found to be rotating with sufficient stability to derive a phase-co...

Recent evaluations of the impact of Turkish healthcare reforms on the efficiency of public hospitals suffer from simultaneous structural changes in the healthcare sector as well as from lack of data on some of the key ingredients of the reform. In this note, we analyze the major obstacles in a fair evaluation of the efficiency of public hospitals taking Sulku(2011)’s data envelopment analysis a...

abstract: decentralization is a process in which local affairs are administrated by local authorities outside of activities of the central government. today, decentralization policy is considered as one of the ways that most countries adopted to improve public sector performance. in this paper using geometric analysis, innovation that this paper represents, an econometric model is considered to...

in this paper we introduce a sequential block iterative method and its simultaneous version with op-timal combination of weights (instead of convex combination) for solving convex feasibility problems.when the intersection of the given family of convex sets is nonempty, it is shown that any sequencegenerated by the given algorithms converges to a feasible point. additionally for linear feasibil...

Affective decision-making (ADM) is a refutable and predictive theory of individual choice under risk and uncertainty. It generalizes expected utility theory by positing the existence of two cognitive processes – the “rational” and the “emotional” process. Observed choice is the result of their simultaneous interaction. We present a model of affective choice in insurance markets, where risk perc...