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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Using machine learning to classify news articles

Lagerkrants, Eleonor, Holmström, Jesper January 2016 (has links)
In today’s society a large portion of the worlds population get their news on electronicdevices. This opens up the possibility to enhance their reading experience bypersonalizing news for the readers based on their previous preferences. We have conductedan experiment to find out how accurately a Naïve Bayes classifier can selectarticles that a user might find interesting. Our experiments was done on two userswho read and classified 200 articles as interesting or not interesting. Those articleswere divided into four datasets with the sizes 50, 100, 150 and 200. We used a NaïveBayes classifier with 16 different settings configurations to classify the articles intotwo categories. From these experiments we could find several settings configurationsthat showed good results. One settings configuration was chosen as a good generalsetting for this kind of problem. We found that for datasets with a size larger than 50there were no significant increase in classification confidence.
2

Předpovídání trendů akciového trhu z novinových článků / Předpovídání trendů akciového trhu z novinových článků

Serebryannikova, Anastasia January 2018 (has links)
In this work we made an attempt to predict the upwards/downwards movement of the S&P 500 index from the news articles published by Bloomberg and Reuters. We employed the SVM classifier and conducted multiple experiments aiming at understanding the shape of the data and the specifics of the task better. As a result, we established the common evaluation settings for all our subsequent experiments. After that we tried incorporating various features into the model and also replicated several approaches previously suggested in the literature. We were able to identify some non-trivial dependencies in the data which helped us achieve a high accuracy on the development set. However, none of the models that we built showed comparable performance on the test set. We have come to the conclusion that whereas some trends or patterns can be identified in a particular dataset, such findings are usually barely transferable to other data. The experiments that we conducted support the idea that the stock market is changing at random and a high quality of prediction may only be achieved on particular sets of data and under very special settings, but not for the task of stock market prediction in general. 1
3

Multidimensional Visualization of News Articles / Flerdimensionel Visualisering av Nyhetsartiklar

Åklint, Richard, Khan, Muhammad Farhan January 2015 (has links)
Large data sets are difficult to visualize. For a human to find structures and understand the data, good visualization tools are required. In this project a technique will be developed that makes it possible for a user to look at complex data at different scales. This technique is obvious when viewing geographical data where zooming in and out gives a good feeling for the spatial relationships in map data or satellite images. However, for other types of data it is not obvious how much scaling should be done. In this project, an experimental application is developed that visualizes data in multiple dimensions from a large news article database. Using this experimental application, the user can select multiple keywords on different axis and then can create a visualization containing news articles with those keywords. The user is able to move around the visualization. If the camera is far away from the document icons then they are clustered using red coloured spheres. If the user moves the camera closer to the clusters they will pop up into single document icons. If the camera is very close to the document icons it is possible to read the news articles
4

Using dated training sets for classifying recent news articles with Naive Bayes and Support Vector Machines : An experiment comparing the accuracy of classifications using test sets from 2005 and 2017

Rydberg, Filip, Tornfors, Jonas January 2017 (has links)
Text categorisation is an important feature for organising text data and making it easier to find information on the world wide web.  The categorisation of text data can be done through the use of machine learning classifiers. These classifiers need to be trained with data in order to predict a result for future input. The authors chose to investigate how accurate two classifiers are when classifying recent news articles on a classifier model that is trained with older news articles. To reach a result the authors chose the Naive Bayes and Support Vector Machine classifiers and conducted an experiment. The experiment involved training models of both classifiers with news articles from 2005 and testing the models with news articles from 2005 and 2017 to compare the results. The results showed that both classifiers did considerably worse when classifying the news articles from 2017 compared to classifying the news articles from the same year as the training data.
5

What is citizen journalism? : a critical analysis from the perspective of the South [Asian] Association for Regional Co-operation

Rai, Nareshchandra January 2016 (has links)
With the rise of internet literacy across the world, men and women on the street are increasingly participating in the news media more than ever before. Early speculations about the influence of citizen journalism imbued the practice with an almost messianic ability to save both journalism and democracy. Whilst these suggestions were influenced by a small amount of data analysis, mainly from Western countries, they were encouraging and demonstrated the potential of citizen journalism in representing the voice of ordinary people. This thesis suggests that citizen journalism is not only promoting the perspective of ordinary citizens, but is also supplementing the coverage of the mainstream media, building relationships, shaping the public sphere, and fulfilling the critical role of a watchdog. Analysing data from a sample of twenty-four different English language citizen journalism sites, this thesis examines the phenomenon of citizen journalism, focusing on the member countries of the South Asian Association for Regional Co-operation. Employing a mixed methods approach, quantitative and qualitative analyses were undertaken of the data set. The results show that citizen journalism sites in the larger and more developed SAARC countries provide more coverage of news than those in the smaller and underdeveloped countries. Political news is given the highest priority by the majority of the sites whilst news about war and terrorism is given the least. The analysis has also discovered that the sites function as a bridge, bringing people living in different parts of the world together and enabling them to engage in political discourse and the sharing of knowledge and experience. Moreover, citizen journalism is helping people to educate themselves about the culture and political systems of their new countries while also forming their own community online. This was particularly the case with the sites that were owned and operated by the diaspora people living in the West. In addition, with a few exceptions, the majority of the sites make substantial use of supplementary materials to enhance news articles, encouraging readers to participate in interactive news activities, such as posting comments. The study has also found that citizen journalists come from a wide range of backgrounds, from politicians acting as citizen journalists to students aspiring to generate revenues through commercial advertising on the Internet. However, they differ from each other in terms of their news values and news presentation — some of the sites offer more political news than others whilst others behave more like the mainstream media, providing a wide range of news articles. On the other hand, a few of the sites are less active and provide fewer news articles than others. The study has also found that citizen journalists from the SAARC countries include works of fiction as part of their news output, thus offering the slightly different definition of citizen journalism from that in the West.
6

Conectores adversativos em textos jornalísticos sobre futebol: análise funcionalista em perspectiva histórica.

Brito, Isabel Pauline Lima de 15 March 2016 (has links)
Submitted by Morgana Silva (morgana_linhares@yahoo.com.br) on 2016-10-11T18:39:16Z No. of bitstreams: 1 arquivototal.pdf: 1029374 bytes, checksum: bb83210555827330fa8403557be7508e (MD5) / Made available in DSpace on 2016-10-11T18:39:16Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1029374 bytes, checksum: bb83210555827330fa8403557be7508e (MD5) Previous issue date: 2016-03-15 / This work is the analysis of adversative connectors which are present in the newspaper articles about soccer, in Pernambuco. To execute this, is has been used a corpus with data from the early XX century and the early XXI century. In all, sixty articles were analyzed, thirty for each time sample, in a total of a hundred and fifteen adversative items found. The study of function behavior of the items is observed by the application of functionalist theoretical support: markedness principle, iconicity principle and prototypes theory. We follow this theoretical perspective based on the studies of Givón (1990 and 1995), Hopper and Traugott (1993 and 2003), Neves (2000), Castilho and Elias (2012), Furtado da Cunha et al (2013). The analysis uses, in contrast, the consultation with traditional grammarians, as Almeida (1962), Melo (1978), Cunha (1986), Cegalla (1989), Bechara (2009), and others. Among the results, it has been verified that the item ‘mas’ has been presented as the prototypical of adversity, remaining as the most frequent in the two time samples of the research. This shows the prototypical value of the item in this function, although there has been insertion of it in contexts of innovative uses. Furthermore, it is observed that the traditional grammar hasn’t updated the list of adversative conjunctions once they haven’t adopted perspectives of observing the item in use situation. They have disregarded the language change process. / Este trabalho consiste na análise de conectores adversativos presentes em notícias jornalísticas sobre futebol no estado de Pernambuco. Para sua realização, constituímos um corpus com dados das primeiras décadas do século XX e das primeiras décadas do século XXI. Ao todo, analisamos sessenta notícias, sendo trinta de cada amostra, tendo sido identificados cento e quinze itens adversativos. O estudo do comportamento funcional dos itens parte da aplicação de suportes teóricos funcionalistas: princípio da marcação, princípio da iconicidade e teoria dos protótipos. Seguimos essa perspectiva teórica baseando-nos em estudos de Givón (1990; 1995), Hopper e Traugott (1993; 2003), Neves (2000), Castilho e Elias (2012), Furtado da Cunha et al. (2013). A análise utiliza como contraponto a consulta a gramáticos tradicionais, como Almeida (1962), Melo (1978), Cunha (1986), Cegalla (1989), Bechara (2009), dentre outros. Dentre os resultados alcançados, constatamos que o mas se apresenta como o item mais recorrente nos dois recortes da pesquisa, o que comprova seu valor de prototípico nessa função, embora registremos sua inserção em contextos de uso inovadores. Além disso, percebemos que a gramática tradicional não atualiza a lista de conjunções adversativas, uma vez que não adota perspectivas de observação dos itens em situação de uso, desconsiderando, assim, os processos de mudança que se concretizam com o passar do tempo.
7

Kvällstidningars porträttering av kvinnliga och manliga våldsbrottsförövare

Björndahl, Fanny, Fernau, Erik, Ågren, Sofie January 2019 (has links)
Denna studie syftade till att undersöka hur svenska kvällstidningar porträtterar manliga och kvinnliga våldsbrottsförövare. Vidare syftade studien till att undersöka mönster kring de svenska kvällstidningarnas språkbruk som appliceras när kvinnliga respektive manliga våldsbrottsförövare beskrivs. Data samlades in genom en strukturerad granskning av 114 nyhetsartiklar i Sveriges två största kvällstidningar. Därefter analyserades data genom en kvalitativ tematisk analys. Resultatet av studien visade att de svenska kvällstidningarna porträtterar kvinnliga och manliga våldsbrottsförövare på olika vis. Kvällstidningarna var mer benägna att använda ett mildare språkbruk och positivare begrepp när man beskrev kvinnliga förövare än när manliga förövare porträtterades. Slutsatserna av denna studie var att kvällstidningarna bidrar till att upprätthålla de könsnormer som råder i samhället, där män beskrivs som starka och försörjande medan kvinnor beskrivs som utsatta och omhändertagande, även när man beskriver personer som begått grova brott. Diskussionen förs kring vad dessa skillnader kan innebära ur ett kriminologiskt sammanhang. Bland annat angående hur kvällstidningar kan påverka samhällets uppfattningar om kvinnliga respektive manliga våldsbrottsförövare och vad denna porträttering kan medföra för konsekvenser i en kriminalpolitisk kontext / The purpose of this study is to highlight how the Swedish newspapers portray male and female violence offenders and to investigate the language used when describing and writing about male and female violence offenders. Data was gathered through a structured investigation of 114 articles from two of the biggest newspapers in Sweden. The method used was a qualitative theme analysis. The result of this study shows that Swedish newspapers portray male and female violence offenders differently. The Swedish newspapers were more likely to use a softer and more positive tone when describing female offenders compared to when describing male offenders. The conclusion of this study is that Swedish newspapers are entertaining the gender norms set by society, where men are commonly described as strong breadwinners and women described in terms of being vulnerable and caring, even when describing violence offenders. The discussion in this study revolves around the impact these differences can have from a criminology perspective. The study also discusses the potential impact and effect the newspapers can have on society’s understanding of female and male violence offenders
8

User Engagement Metrics in Story Focused News Articles

von Grothusen, Beata January 2020 (has links)
Story-focused news articles are a different type of news articles, containing more visual and interactive elements, developed in order to engage a younger audience for online newspapers. User engagement has been defined as the “emotional, cognitive and behavioral connection between a user and a resource”, and different metrics are used to track the user engagement of the readers on these articles. However, there is no prior research on which of these metrics describe user engagement in the most accurate way. This study therefore aims to find out what metrics to use when measuring user engagement on story-focused articles through interviewing readers of three different story-focused articles and compare their engagement levels with actual metric values tracked. The results show that two out of the three articles can be considered engaging according to the definition, and the metrics they both have in common is high values of scroll depth, low values of bounce rate and high values of page views. The study therefore concludes that a combination of these three metrics describes user engagement in the most accurate way possible. Furthermore, both the engaging articles have a large number of images, galleries and videos compared to the non-engaging article, which indicates that visual elements in different forms are a winning concept for story-focused articles. / Nyhetsartiklar som fokuserar på berättande är en ny typ av nyhetsartiklar som innehåller fler visuella och interaktiva element, utvecklade för att engagera en yngre publik för digitala nyhetssidor. Användarengagemang har tidigare definierats som det “emotionella, kognitiva och beteendemässiga kontakten mellan användaren och resursen”, och olika mätetal används för att mäta användarengagemanget hos läsarna av nyhetsartiklar som fokuserar på berättande. Däremot finns det ingen tidigare forskning på vilka av dessa mätetal som beskriver användarengagemang på bäst sätt. Den här studien har därför som mål att ta reda på vilka mätetal som borde användas vid mätning av användarengagemang för nyhetsartiklar som fokuserar på berättande, genom att intervjua läsare av tre olika artiklar och jämföra deras engagemangsnivå med uppmätta mätetal. Resultaten visar att 2 av de 3 artiklarna kan anses engagerande enligt definitionen, och mätetalen som de båda har gemensamt är ett högt genomsnittligt scrolldjup, låg nivå av studsar och höga siffror för sidvisningar. Studien drar därför slutsatsen att en kombination av dessa tre mätetal beskriver användarengagemang på bästa möjliga sätt. Dessutom har båda de engagerande artiklarna ett stort antal bilder, gallerier och videor jämfört med den icke engagerande artikeln, vilket indikerar att visuella element av olika slag är ett vinnande koncept för historieberättande artiklar.
9

"Invandrare i svensk media" : En kvalitativ textanalys om medias konstruktion av invandrare i svenska morgon- och kvällstidningar under tidsperioden 2016-2021 / “Immigrants in Swedish media” : A qualitative text analysis of the media's construction o immigrants in Swedish morning- and evening newspapers during the period 2016–2021

Aydin, Edisia, Bahnam, Mariam January 2021 (has links)
The media plays a major role in today's society. What we do not experience ourselves, we can be told through the media. Seen from this, the purpose of this study is to investigate how immigrants are described in news articles in Swedish morning and evening newspapers during the period 2016-2021, with focus on the negative aspects. We will focus on answering which specific characteristics the term immigrant is associated with and in which perspectives it is written about immigrants. The study is based on a qualitative text analysis and the empirical material we have collected thus consists of 24 news articles.The articles were analyzed using post colonial theory, the dichotomy We and the Others and stereotypes.The results show that Swedish morning and evening newspapers describe immigrants in more negative than positive terms. There is also a continuous description of characteristics in the form of stereotypes. Newspapers portray, so to speak, an image of immigrants as different, deviant and foreign. At the same time, the results show that there is a marked difference between immigrants and Swedes as immigrants stand in sharp contrast to the so-called "Swedishness". The conclusions we can draw from the results is that the media differentiate between immigrants and ethnic Swedes with the help of different characteristics and perspectives to describe immigrants.
10

”…OCH INGET BLEV NÅGONSIN SIG LIKT IGEN” : En tematisk analys om medias framställning av brottsutsatta kvinnor i Sverige

Jamali, Natalie, Johansson Bjernalt, Moa, Norberg, Nanna January 2020 (has links)
Medias roll i samhället är stor och den spelar en viktig roll i hur samhället ska kunna få ny information om vad som sker runt om i världen. Kvällstidningar rapporterar dagligen om politiska, kulturella och även brottsliga händelser som sker och nyheterna når tusentals människor som får ta del av det. Detta gör att media har ett stort ansvar på sina axlar med att utge opartiska, neutrala och informativa artiklar om det som ämnas att läsas. I denna studie undersöktes hur media framställer olika offer, baserat på den utsattes livssituation, plats för brottet samt vilket sorts brott de utsatts för. Studien genomfördes med hjälp av en tematisk analys, där tre kända fall i Sverige valdes ut för att sedan jämföra och analysera hur media framställer de brottsutsatta. Resultaten påvisar att media har en tendens att framställa brottsutsatta på olika sätt baserat på bland annat deras livssituation och deras bakgrund. Vidare visade det även att medias rapportering av brottsoffer kan vara mer omfattande beroende på hur väl en brottshändelse kan få andra människor att identifiera sig med den brottsutsatta och deras familj. / Media plays a big role in society and is partially responsible for how people in the society receives information about what is happening around the world. Newspapers are daily reporting about political, cultural and even criminal, events that occur, and the news is reached by thousands of people to read. This means that media has a lot of responsibility on their shoulders by giving out impartial, neutral and informative articles for people to read. In this study, we sought to investigate how media presents different types of victims, based on their life situation, the scene of the crime and also what type of crime they were victims of. The study was performed with a thematic analysis, where three known cases in Sweden was chosen, these were then compared and analysed in how they were presented in the media. The results of the study show that media have a tendency to present victims of crime different, depending on their life situation and their background. Furthermore, it showed that media's coverage on victims of crime can be more extensive, depending on how well a crime can make other people identify with the victim and its family.

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