Uporaba nevronskih mrež za napoved pretovora v Luki Koper, d. d.

magistrsko delo

Tom Žumer (Author), Dejan Dragan (Mentor)

Abstract

Uspešne odločitve podjetij med drugim temeljijo tudi na napovedih. Le-te morajo biti dobre in natančne, da lahko podjetja ohranjajo svojo konkurenčno prednost. Napovedi se danes izvajajo z naprednejšimi metodami, med katere spadajo tudi nevronske mreže. V magistrskem delu smo želeli ugotoviti, ali so umetne nevronske mreže primerne za napovedovanje pretovora v Luki Koper, d. d. Podatki pretovora so bili sestavljeni iz generalnega in tekočega tovora, zaradi česar smo razvili dva modela umetne nevronske mreže, in sicer model mreže časovne vrste generalnega tovora in model mreže časovne vrste tekočega tovora. Modela vsebujeta t. i. NARX (ang. nonlinear autoregressive network with exogenous inputs) arhitekturo nevronske mreže. Izdelavo modela smo razdelili v dva koraka. V prvem koraku smo naredili redukcijo makroekonomskih kazalnikov, ki so nam predstavljali eksogene vhode modela. Izvedli smo jo z metodo analize glavnih komponent v kombinaciji z Monte Carlo simulacijo ter multiplo linearno regresijo. Modelu umetne nevronske mreže generalnega tovora smo namenili deset spremenljivk, modelu za tekoči tovor pa smo namenili štiri spremenljivke. V drugem koraku smo razvili umetno nevronsko mrežo generalnega in tekočega tovora. Rezultati obeh modelov so bili zadovoljivi. Poleg solidnega prileganja ocenjenih in dejanskih podatkov pretovora sta modela izpolnila tudi vse kriterije za kakovost modela. Glede na dobljene rezultate obeh modelov menimo, da so umetne nevronske mreže primerne za napovedovanje pretovora v Luki Koper, d. d.

Keywords

umetne nevronske mreže;modeliranje;NARX;napovedovanje pretovora;logistika;magistrske naloge;

Data

Language:	Slovenian
Year of publishing:	2017
Typology:	2.09 - Master's Thesis
Organization:	UM FL - Faculty of Logistics
Publisher:	[T. Žumer]
UDC:	004.42
COBISS:	512842813
Views:	1182
Downloads:	128
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Using neural networks to forcast throughput of port Koper
Secondary abstract:	Successful business decisions are, among others, based on forecasts. They have to be good and precise to enable the company to maintain its competitive advantage. Forecasts are now conducted by advanced methods, which also include neural networks. In this thesis, we wanted to determine whether the artificial neural networks are suitable for forecasting the throughput of Luka Koper, d. d. Data throughput consisted of general and liquid cargo, which is why we developed two models of artificial neural networks, namely, time series neural network model of general cargo and time series neural network model of liquid cargo. Models contain so called NARX (Nonlinear Autoregressive Network with Exogenous Inputs) architecture of neural network. We divided the model elaboration in two steps. In the first step, we have made the data reduction of macroeconomic indicators, which we accounted them as exogenous inputs for our model. Data reduction was carried out by the principal component analysis method in combination with Monte Carlo simulation and multiple linear regression. For our neural network model of general cargo we allocated ten exogenous variables, while for neural network model of liquid cargo we allocated four variables. In the second step, we have developed an artificial neural network of general and liquid cargo. The results of both models were satisfactory. In addition to a solid fit of the estimated and actual data throughput, the models also meet all the criteria for the quality of the model. With respect to results obtained by our neural network models, we believe that the artificial neural networks are suitable for throughput forecasting of Luka Koper, d. d.
Secondary keywords:	artificial neural network;modelling;throughput forecasting;logistics;
URN:	URN:SI:UM:
Type (COBISS):	Master's thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za logistiko
Pages:	X, 125 str., [2] str. pril.
ID:	9604838