Search results for "hinta"

On data mining applications in mobile networking and network security

2014

Taming big knowledge evolution

2016

Information and its derived knowledge are not static. Instead, information is changing over time and our understanding of it evolves with our ability and willingness to consume the information. When compared to humans, current computer systems seem very limited in their ability to really understand the meaning of things. On the other hand, they are very powerful when it comes down to performing exact computations. One aspect which sets humans apart from machines when trying to understand the world is that we will often make mistakes, forget information, or choose what to focus on. To put this in another perspective, it seems like humans can behave somehow more randomly and still outperform …

Biased GraphWalks for RDF Graph Embeddings

2017

Knowledge Graphs have been recognized as a valuable source for background information in many data mining, information retrieval, natural language processing, and knowledge extraction tasks. However, obtaining a suitable feature vector representation from RDF graphs is a challenging task. In this paper, we extend the RDF2Vec approach, which leverages language modeling techniques for unsupervised feature extraction from sequences of entities. We generate sequences by exploiting local information from graph substructures, harvested by graph walks, and learn latent numerical representations of entities in RDF graphs. We extend the way we compute feature vector representations by comparing twel…

Global RDF Vector Space Embeddings

2017

Vector space embeddings have been shown to perform well when using RDF data in data mining and machine learning tasks. Existing approaches, such as RDF2Vec, use local information, i.e., they rely on local sequences generated for nodes in the RDF graph. For word embeddings, global techniques, such as GloVe, have been proposed as an alternative. In this paper, we show how the idea of global embeddings can be transferred to RDF embeddings, and show that the results are competitive with traditional local techniques like RDF2Vec. peerReviewed

Exploring sequential interplay between challenges and regulatory processes in collaborative learning with process mining

2023

This study explored the sequential interplay between challenges and regulatory processes in high- and low-performing collaborative groups. 66 students from a Finnish higher education institution participated in a collaborative task in groups of three. Approximately 34 h of video data were coded. The sequential analysis revealed that both groups had higher sequential transitions between cognitive regulation and emotional/motivational regulation, rather than cognitive challenges. The high-performing groups demonstrated a stronger sequential link between emotional/motivational regulation and cognitive regulation than the low-performing groups did when faced with cognitive challenges. The study…

Prisnivån i Finland år 1816

1972

Prisnivån i Finland år 1817

1972

Prisnivån i Finland år 1818

1972

Prisnivån i Finland år 1819

1972

Alkoholijuomien kysynnän joustot Suomessa vuosina 2001-2015

2016

Tässä pro gradu –tutkielmassa estimoidaan alkoholin kysynnän hinta- ja menojoustot Suomessa vuosina 2001-2015. Alkoholin kysyntää tarkastellaan jaoteltuna sekä vähittäismyyntiin ja anniskeluun että eri juomaryhmiin. Kysynnän hinta- ja menojoustot estimoidaan Deatonin & Muellbauerin (1980a) Almost Ideal Demand System (AIDS) –mallin avulla. Tutkimuksessa huomioidaan mallin muuttujien epästationaarisuus testaamalla sekä epästationaarisuutta että yhteisintegraatiota. Testien perusteella kaikki tutkimuksen mallit voidaan todeta yhteisintegroituneiksi, jolloin alkoholin kysyntää kuvataan pitkän aikavälin tasapainoyhtälöllä ja lyhyen aikavälin virheenkorjausmallilla. Tutkimuksessa saadaan esimerki…