picking stocks by graph database (part 2: machine learning)

In our last post, we demonstrated a graph database created to enable study of the stock market, particularly the study of causality relationships. So how to proceed from there? At this stage we want to pick winning stocks, not write an academic paper, so our focus turns toward practical machine learning. Source Data We start […]

DIY mood tracker with LimeSurvey

My friend and fellow adventurer Irene Dubois—not her real name of course—recently came home from a psychiatric appointment needing a way to track her daily mood. She tested several smartphone apps designed for this purpose, but found them too inflexible. Consequently, she asked me to create a custom mood tracker for her. The design requirements […]

bias reinforcement through survey questionnaires

Today I play media theorist and examine how survey questionnaires reinforce survey designers’ biases: The knowledge that biases emit from survey questionnaires is nothing new. The extreme case, “push-polling”, intentionally guides the questionnaire reader toward a viewpoint, without real interest in their prior opinion. Any survey writer willing to push-poll already understands my concerns about […]

a better way to ask about gender in survey questionnaires

Survey questionnaires regularly ask respondents’ sex or gender, and mostly offer only the binary options: When presented with such a survey on paper, I typically add and then select a third option: “Fuck you”. (Similarly, I do the same with race/ethnicity questions when asked to choose one out of four or five options). However, we […]

cluster analysis of marketing survey ranking questions

Recently I’ve become extremely interested in survey analysis and, more broadly, the social consequences of survey-based decision making. So when a friend asked for help extracting business intelligence from a market research survey they conducted, I jumped at the opportunity to test out some ideas. The analysis presented below details a use of hierarchical clustering […]