Analysis of Twitter Users’ Mood for Prediction of Gold and Silver Prices in the Stock Market
The question about possibilities to use Twitter users’ moods to increase accuracy of stock price movement prediction draws attention of many researchers. In this paper we examine the possibility of analyzing Twitter users’ mood to improve accuracy of predictions for Gold and Silver stock market prices. We used a lexicon-based approach to categorize the mood of users expressed in Twitter posts and to analyze 755 million tweets downloaded from February 13, 2013 to September 29, 2013. As forecasting technique, we select Support Vector Machines (SVM), which have shown the best performance. Results of SVM application to prediction the stock market prices for Gold and Silver are discussed.
Development of linguistic technologies and penetration of social media provide powerful possibilities to investigate users’ moods and psychological states of people. In this paper we discussed possibility to improve accuracy of stock market indicators predictions by using data about psychological states of Twitter users. For analysis of psychological states we used lexicon-based approach, which allow us to evaluate presence of eight basic emotions in more than 755 million tweets. The application of Support Vectors Machine and Neural Networks algorithms to predict DJIA and S&P500 indicators are discussed.
The article deals with different ways of using technology to develop learners' skill of prediction, as one of the metalinguistic skills the recent National Educational Standard puts emphasis on. The use of short videos, Power Point and Wordle word clouds for the purpose is described.
In many languages of the world, the forms in the irrealis domain (subjunctive, conjunctive, conditional) are also used in complement clauses. The set of verbs that require subjunctive complementation is similar but not identical across languages. The paper identifies Russian verbs licensing subjunctive in complement clauses, either as the only option or as an alternative to the indicative. Basing on the Russian National Corpus, a list of these predicates is compiled, with relative frequencies of subjunctive vs. indicative for each predicate. The main result of the study is distinguishing two types of subjunctive complement clauses. Most predicates belong to the group which is similar to purpose clauses with чтобы, both semantically and syntactically. The subject of the main predicate is involved in the situation described by the subordinate clause by wishing it to be realized, by intention, or causal relations. The second, minor group includes epistemic uses of чтобы with e.g. сомневаться and other predicates in the context of negation, interrogation and other constructions expressing low probability.
The aim of the research was to find factors that allow students effectively use Internet. Study consisted of two parts. Questionnaires were filled by 159 1-3 year undergraduate students of NB SU-HSE. Interview was carried out with 7 undergraduate students of NB SU HSE and 7 IT specialists. Questionnaire had three parts: purpose of Internet use; motivation of Internet use (based on inventory by Arestova, Babanin and Voyskunsky); psychological states in the process of using Internet (based on the inventory FPS by Chirkov). Three hypotheses were tested in the study. Hypothesis 1 was confirmed: students' leading motive while using Internet is a cognitive motive and the main goal - search for information. Hypothesis 2 was confirmed by cluster analysis: students experience dysfunctional states while using Internet. Hypothesis 3 was not confirmed: there are no differences in students' and IT specialists' search strategies.
The form whose main function is to express indirect commands, called the third person Imperative, Jussive or Exhortative, when compared to the prototypical (second person) Imperative, shows semantic and formal similarities and distinctions at the same time. The study describes formal and functional patterns of Jussive and places this category within the typology of the related categories, such as Imperative and Optative, based on data from six East Caucasian languages (Archi, Agul, Akhvakh, Chechen, Icari and Kumyk). Five formal patterns of Jussive are attested in these languages, including a specialized form, constructions derived from want, from tell him to do and from make him do and the Optative. Jussive forms may express such meanings as third person command, indirect causation, permission, indifference towards the accomplishment of an action and an assumption. While the Jussive is crucially different from the second person Imperative in that it introduces a third participant, this article shows that it is the addressee, not a third person, who is the central participant of a Jussive situation from both formal and functional points of view.
Group of authors sets out new directions of development of the national economy, considering these processes not only domestic but also global positions. This issue is covered in the dynamics, since historical periods and describing the situation at the present stage, the time series ends with the prospects of Russia's development in the future. Moreover, different time periods, intertwined, forming single interconnected system. From the perspective of the economic entity as a separate element of the unified economic system highlights the issues of forecasting activity of the enterprise as a tool to reduce the economic risks. The book can be recommended to senior executives, civil servants and teachers of higher educational institutions, graduate students and senior students of economic specialties.