Visual knowledge discovery and machine learning for investment strategy

Knowledge discovery is an important aspect of human cognition. The advantage of the visual approach is in opportunity to substitute some complex cognitive tasks by easier perceptual tasks. However for cognitive tasks such as financial investment decision making this opportunity faces the challenge that financial data are abstract multidimensional and multivariate, i.e., outside of traditional visual perception in 2D or 3D world. This paper presents an approach to find an investment strategy based on pattern discovery in multidimensional space of specifically prepared time series. Visualization based on the lossless Collocated Paired Coordinates (CPC) plays an important role in this approach for building the criteria in the multidimensional space for finding an efficient investment strategy. Criteria generated with the CPC approach allow reducing/compressing space using simple directed graphs with beginnings and the ends located in different time points. The dedicated subspaces constructed for time series include characteristics such as Bollinger Band, difference between moving averages, changes in volume etc. Extensive simulation studies have been performed in learning/testing context. Effective relations were found for one-hour EURUSD pair for recent and historical data. Also the method has been explored for one-day EURUSD time series n 2D and 3D visualization spaces. The main positive result is finding the effective split of a normalized 3D space on 4 × 4 × 4 cubes in the visualization space that leads to a profitable investment decision (long, short position or nothing). The strategy is ready for implementation in algotrading mode.     

Evaluating fit of the Prospective and Retrospective Memory Questionnaire (PRMQ) in a Nigerian adult population

This study aimed to evaluate the latent structure of the Prospective and Retrospective Memory Questionnaire (PRMQ) and to estimate the reliability and validity of scores from the measure in a Nigerian adult population (N = 758; age range = 18 - 63 years; females = 52.24%). Respondents also completed the Cognitive Failures Questionnaire (CFQ). The data were analysed utilising confirmatory factor analysis (CFA). The results suggest the PRMQ to have a tripartite structure characterised by the following features: general memory, plus eight prospective and eight retrospective memory items. Scores from the PRMQ had evidence of convergent validity with the CFQ. The reliability of scores from the PRMQ was of acceptable magnitude for the research purposes investigated in the study.     

Personality and performance in real-world competitions: Testing trait activation of fear of negative evaluation,dispositional reinvestment,and athletic identity in the field

ObjectivesBased on the trait activation principle, researchers have tested whether personality traits are capable of predicting sport performance (under pressure). Typically, however, these investigations followed experimental approaches in the laboratory and only rarely in the field. Accordingly, the purpose of this study was to test for the generalizability of findings gained in these experimental studies and to investigate potential trait activation for real-world performance in competitions. Based on prior studies on the prediction of performance under pressure, the selected personality traits involved fear of negative evaluation, dispositional reinvestment, and athletic identity.DesignPersonality traits were used as predictors for low-pressure and high-pressure basketball free-throw performance.MethodFirst, 53 basketball players completed trait questionnaires. Second, directly prior to performance assessments, participants reported on perceived importance, their somatic and cognitive state anxiety, and confidence. Third, free-throw performance was assessed in a low-pressure condition (i.e., successful free-throw percentage for 30 attempts) and repeatedly in 12 high-pressure conditions within real basketball matches (i.e., successful free-throw percentage for total attempts).ResultsTwo main findings were identified: First, none of the traits predicted performance under low pressure. Second, under high-pressure, only fear of negative evaluation as well as state anxiety were significantly negatively associated with performance in competitions.ConclusionThese results extend existing literature and add applied and ecologically valid empirical support for the relevance of anxiety-related traits (i.e., fear of negative evaluation) and states for performance under pressure in real-world competitions, emphasizing the importance of self-presentational considerations in athletes when the stakes are high.     

Prospective conceptual model of Tomatis® method effects on students’ self-regulation

This study aimed to develop a preliminary conceptual model that explains the perceived effect of the Tomatis® method on university students’ self-regulation for study course learning. Seven beginning graduate students (6 female; 3 black, 4 white) with a large South African university completed a Tomatis® method programme student learning support intervention. The students participated in focus group discussion and brief survey on their Tomatis® method programme student learning support experiences. Thematic analysis identified five themes that define Tomatis® method programme self-regulation effects on students: i) being self-aware and enhanced environmental sensitivity; ii) improved study concentration per time frame; iii) perspective taking, willingness, and ability to listen to others’ opinions; iv) self-reflection or enhanced inward learning experience; and v) boldness, creativity and open-mindedness. Findings support a conceptual working model of the Tomatis® method for the promotion of learner self-regulation and behavioural change in a university setting.     

Using Storytelling to Heal Trauma and Bridge the Cultural Divide Between Veterans and Civilians

There is a growing disconnect between the Veteran and civilian communities related to their understanding of war-related trauma, postdeployment reintegration difficulty, and the experience of Memorial Day. A therapeutic way to bridge this divide is through community storytelling. This paper describes a program development project at a Veterans Affairs Medical Center that was created to increase the connection between these communities. Using storytelling, six Veterans shared their personal experiences with a civilian audience in honor of Memorial Day. Qualitative data on the impact of the program is reported, and suggestions for future application and research are discussed.     

From Resistance to Buy-In: Experiences of Clinicians in Training Using Feedback-Informed Treatment

In this qualitative research study, the authors use grounded theory analysis to examine the experiences of clinicians in training and use client feedback to inform treatment. Twenty-six marriage and family therapy graduate students in their first or second semester of clinical practicum participated in this study. Participants were trained in eliciting and responding to client feedback at the end of every therapy session. At the end of the semester, participants reflected on their learning experience. Participant experiences reflected a developmental learning process beginning with significant challenges followed by positive clinical changes and positive clinician changes, culminating in overall buy-in regarding the importance of client feedback for nearly all clinicians. The results support the literature that client feedback directly informs the therapeutic process while suggesting important recommendations for training new clinicians in learning to use client feedback.     

Who Benefits from Couple Relationship Education? Findings from the Largest German CRE Study

In evaluation studies on couple relationship enhancement (CRE) programs, researchers are encouraged to also investigate which couples benefit from program participation. The authors qualified 104 university students to offer an evidence-based CRE program. Up to a 15-month follow-up, the participating couples (N = 234) reported a significant decrease in unsolved relationship conflicts. A 2-day-long intensive training led to better results compared with a weekly format regarding dropouts. Couples with lower pretest satisfaction ratings reported significant improvements over time, whereas couples with initial higher ratings reported no change or a deterioration. Further predictors were identified. The findings should be taken into account in future research.     

Exploring the Non-objectified Character of Dao in the Laozi: A Modem Articulation

This article focuses on the interpretation of heng dao 恆 道 (sometimes translated as "the constant dao") and its fundamental character in the Laozi.It argues against the prevailing interpretation of dao as an unchanging metaphysical substance or reality,and maintains that the fundamental feature of heng dao is both dynamic and eternal.Heng dao is beyond language because of its dynamic character,but the Laozi nevertheless strives to express it in three aspects:1) its flexibility and adaptability as represented in the metaphor of water;2) its movement of reversal and return;3) and in its existential significance as a guide for life.Heng dao can be called the non-objectified dao,which produces law,principle,rule,method,and so on.Looked at in this way,the dynamic character of heng dao can be called non-objective.     

Ji Kang on Nourishing Life

Ji Kang's "An Essay on Nourishing Life" has,for much of its history,been overshadowed by his more famous work "Sound is without Grief or Joy." Be that as it may,"An Essay on Nourishing Life" is also an important text in that it delves into the interdependence of the heart-mind,spirit,and vital breath,and into how harmony between them is the key to ensuring physical longevity.In addition to investigating this aspect of his thought,this paper will also discuss Ji Kang's attention to the vicissitudes of knowledge and desire and to the need to temper them with tranquility and stillness."An Essay on Nourishing Life" can thus be read as an extension of classical Daoist theories of self-cultivation while at the same time elaborating upon them by bringing together their disparate components into a coherently unified doctrine.     

自动化情绪调节中存在积极效应吗:来自ERPs的证据

采用线索Go/Nogo任务,运用ERPs技术考察了老年人和青年人在自动化情绪调节上的差异。ERPs结果显示:⑴愉快面孔比中性面孔诱发的Go-N2波幅较小,潜伏期较短;Nogo-P3波幅较大,潜伏期较短,表明情绪面孔比中性面孔更能吸引注意;⑵在愉快面孔上,老年组比青年组的Go/Nogo-P3波幅大、潜伏期差异不显著;在悲伤面孔上,老年组比青年组的Go/Nogo-P3波幅大,Nogo-P3潜伏期长,说明老年组比青年组更加抑制对悲伤面孔的反应,老年人在自动化情绪调节中表现出一定程度的积极效应。