Search results for "ML"

Optimal Usage of Multiple Network Connections

2008

In the future mobile networks, a mobile terminal is able to select the best suitable network for each data transmission. The selection of a network connection to be used has been under a lot of study. In this paper, we consider a more extensive case in which we do not select a network connection but use several network connections simultaneously to transfer data. When data is transferred using multiple network connections, a network connection has to be selected for each component of the data. We have modelled this problem as a multiobjective optimization problem and developed a heuristic to solve the problem fast in a static network environment. In this paper, we discuss solving the proble…

Feature selection for distance-based regression: An umbrella review and a one-shot wrapper

2023

Feature selection (FS) may improve the performance, cost-efficiency, and understandability of supervised machine learning models. In this paper, FS for the recently introduced distance-based supervised machine learning model is considered for regression problems. The study is contextualized by first providing an umbrella review (review of reviews) of recent development in the research field. We then propose a saliency-based one-shot wrapper algorithm for FS, which is called MAS-FS. The algorithm is compared with a set of other popular FS algorithms, using a versatile set of simulated and benchmark datasets. Finally, experimental results underline the usefulness of FS for regression, confirm…

From Standards to the Invisible Web

2001

Standardeista näkymättömään verkkoon: EUSIDIC Spring meeting 22.-23.3.2001 Lille, Ranska

2001

Clasificación de usos del suelo a partir de imágenes Sentinel-2

2017

[EN] Sentinel-2 (S2), a new ESA satellite for Earth observation, accounts with 13 bands which provide high-quality radiometric images with an excellent spatial resolution (10 and 20 m) ideal for classification purposes. In this paper, two objectives have been addressed: to determine the best classification method for S2, and to quantify its improve-ment with respect to the SPOT operational mission. To do so, four classifiers (LDA, RF, Decision Trees, K-NN) have been selected and applied to two different agricultural areas located in Valencia (Spain) and Buenos Aires (Argentina). All classifiers were tested using, on the one hand, all the S2 bands and, on the other hand, only selecting those…

The contribution of granular and fundamental comparative advantage to European Union countries' export specialisation

2020

This paper analyses the contribution of fundamental comparative advantage (a country‐specific component) and granular comparative advantage (a firm‐specific component) to European Union countries' export specialisation. We find that, on average, granular comparative advantage may explain export specialisation in 29% of industries, which account for 47% of total exports. We also show that 60% of the variation in export specialisation across countries and industries may be explained by granular comparative advantage. These results highlight that some outstanding firms may play a very important role in explaining European Union countries' export specialisation.

EMU and trade: A PPML re‐assessment with intra‐national trade flows

2020

This paper examines the EMU effect on trade for the eleven early joiners and Greece relying for the first time on data that include both international and intra‐national trade flows, in line with all the microfoundations of the structural gravity model of trade. We find that the overall EMU impact on trade is positive between its members and, specially, for trade between members and non‐members. Interestingly, we further show that the effect of the EMU on bilateral trade remarkably differs across countries. For Ireland, Belgium–Luxembourg, Spain, Portugal and Austria, we find robust evidence that EMU has boosted trade both with other members and with third countries, while for Finland, Fran…

Information and Communication Component of Modern Entrepreneurship

2012

The extent of involvement of small business to the World Wide Web depends not only on the degree of activity of the entrepreneurs themselves, but also on the level of development of a virtual market space. Statistics show that in the European Union, for example, businessmen from countries just emerging from the inertia of the machine production are still fairly sluggish in the development of ICT. In the context of the problems of small business in general and of the European entrepreneurship, in particular, it can be argued that virtually oriented entrepreneurs need now a strong support at both the national and supra-national levels.

Climate Change and Global Justice: New Problem, Old Paradigm?

2014

In this paper, we focus on the conceptualization of climate change as an issue of global justice. While we do not deny that climate change raises fundamental and dramatic issues of justice among peoples as well as generations, our claim is that the language of global justice can obscure the fact that problems provoked by climate change lack some characteristic features of problems of global justice, while possessing others that are not characteristic of such problems. We begin by describing briefly how we got to where we are, climatically speaking; we go on to show why it is plausible to think of climate change as provoking problems of global justice; point out four respects in which this d…

An Augmented Static Olley-Pakes Productivity Decomposition with Entry and Exit Measurement and Interpretation

2015

We develop an augmented Olley–Pakes (OP) decomposition that allows us to examine how entering and exiting firms contribute to the popular OP covariance measure of allocative efficiency. Applying the decomposition to a comprehensive micro-level data, we find that a large part of the OP covariance component can be attributed to entrants and exiting firms. We also build a model of firm dynamics that is consistent with our main empirical results. In the model economy, the standard OP covariance component tends to increase with certain type of distortions because of endogenous changes in firm entry and exit.