Browsing by Subject "Mineria de dades"
Now showing items 1-20 of 400
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A comparative study of demand forecasting models for an online retailer business
(Universitat Politècnica de Catalunya, 2021-06-30)
Master thesis
Restricted access - author's decision -
A comprehensive scenario agnostic Data LifeCycle model for an efficient data complexity management
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Open AccessThere is a vast amount of data being generated every day in the world, coming from a variety of sources, with different formats, quality levels, etc. This new data, together with the archived historical data, constitute ... -
A Data LifeCycle model for smart cities
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Open AccessSmart Cities are the most challenging and promising technological solutions for absorbing the increasing pressure of population growth, while simultaneously enforcing a sustainable economic progress as well as a higher ... -
A distributed hybrid index for processing continuous range queries over moving objects
(Springer, 2019-05)
Article
Open AccessCentral to many location-based services is the problem of processing concurrent continuous range queries over a large scale of moving objects. Most relevant works to this problem mainly investigate the centralized search ... -
A first approach to the multipurpose relational database server
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
Article
Open AccessIn this paper, an architecture and an implementation of a multipurpose relational database server are proposed. This architecture enables classical queries to be executed, deductions to be made, and data mining operations to ... -
A framework for building OLAP cubes on graphs
(Springer, 2015)
Conference report
Open AccessGraphs are widespread structures providing a powerful abstraction for modeling networked data. Large and complex graphs have emerged in various domains such as social networks, bioinformatics, and chemical data. However, ... -
A framework for online conformance checking
(Springer, 2017)
Conference report
Open AccessConformance checking – a branch of process mining – focuses on establishing to what extent actual executions of a process are in line with the expected behavior of a reference model. Current conformance checking techniques ... -
A machine learning approach for layout inference in spreadsheets
(SciTePress, 2016)
Conference report
Open AccessSpreadsheet applications are one of the most used tools for content generation and presentation in industry and the Web. In spite of this success, there does not exist a comprehensive approach to automatically extract and ... -
A methodology for maintaining consistency between conceptual interpretations of nested partitions
(IOSPress, 2016-10)
Part of book or chapter of book
Restricted access - publisher's policyThe relationship between interpretations of nested partitions is analyzed in this work, since there are multiple situations where a refinement of the original partition arises. As a result, a new methodology NCI-IMS is ... -
A methodology for maintaining consistency between conceptual interpretations of nested partitions
(2016)
Conference report
Restricted access - publisher's policyThe relationship between interpretations of nested partitions is analyzed in this work, since there are multiple situations where a refinement of the original partition arises. As a result, a new methodology NCI-IMS is ... -
A multi-scale smoothing kernel for measuring time-series similarity
(2015-11-01)
Article
Open AccessIn this paper a kernel for time-series data is introduced so that it can be used for any data mining task that relies on a similarity or distance metric. The main idea of our kernel is that it should recognize as highly ... -
A new deep reinforcement learning architecture for autonomous UAVs
(Universitat Politècnica de Catalunya, 2018-09-07)
Bachelor thesis
Open AccessRecent improvements in computation and algorithmic research, together with the rising era of Big Data, have allowed Artificial Intelligence increase its popularity within masses. The recent publication of the Deep Q-Network ... -
A qualitative reasoning approach for measuring citizens’ satisfaction
(2004-10)
Article
Open Access -
A recommender system for process discovery
(Springer, 2014)
Conference report
Open AccessOver the last decade, several algorithms for process discovery and process conformance have been proposed. Still, it is well-accepted that there is no dominant algorithm in any of these two disciplines, and then it is often ... -
A recursive paradigm for aligning observed behavior of large structured process models
(Springer, 2016)
Conference report
Open AccessThe alignment of observed and modeled behavior is a crucial problem in process mining, since it opens the door for conformance checking and enhancement of process models. The state of the art techniques for the computation ... -
A region-based algorithm for discovering Petri nets from event logs
(Springer, 2008)
Conference report
Open AccessThe paper presents a new method for the synthesis of Petri nets from event logs in the area of Process Mining. The method derives a bounded Petri net that over-approximates the behavior of an event log. The most important ... -
A stochastic approach for automatic layout synthesis in interior design, using a learningbased scoring function
(Universitat Politècnica de Catalunya, 2016-07-06)
Master thesis
Open Access
Covenantee: InteriorvistaDespite the increasing capabilities of computers to master sophisticated human-like tasks and the recent explosive new wave of Machine Learning-based methods, the interior design field still remains a hard-to-master area, ... -
A Survey on multimodal data stream mining for e-learner’s emotion recognition
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference report
Restricted access - publisher's policyEmotions play a crucial role in learning. To improve and optimize electronic learning (e-Learning) outcomes, many researchers have investigated the role of emotions. Also, researchers have come up with many approaches to ... -
A tour in process mining: from practice to algorithmic challenges
(2019-11-01)
Article
Open AccessProcess mining seeks the confrontation between modeled behavior and observed behavior. In recent years, process mining techniques managed to bridge the gap between traditional model-based process analysis (e.g., simulation ... -
A unified approach for measuring precision and generalization based on anti-alignments
(Springer, 2016)
Conference report
Open AccessThe holy grail in process mining is an algorithm that, given an event log, produces fitting, precise, properly generalizing and simple process models. While there is consensus on the existence of solid metrics for fitness ...
