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Big Financial Stocks Face Their 50-Day’s

May 26, 2017 by The Reformed Broker   Comments (0)

Lots of big financial stocks have run back up into their declining or flat-lining 50-day moving averages into the end of this week. If we’re truly headed higher in the overall US stock market, tech could use some help from the banks and brokers. Hard to persist in the narrative that only a handful of......

The emergence and evolution of the research fronts in HIV/AIDS research

May 25, 2017 by Complexity Digest   Comments (0)

In this paper, we have identified and analyzed the emergence, structure and dynamics of the paradigmatic research fronts that established the fundamentals of the biomedical knowledge on HIV/AIDS. A search of papers with the identifiers “HIV/AIDS”, “Human Immunodeficiency Virus”, “HIV-1” and “Acquired Immunodeficiency Syndrome” in the Web of Science (Thomson Reuters), was carried out. A citation network of those papers was constructed. Then, a...

Classifications of Innovations Survey and Future Directions. (arXiv:1705.08955v1 [q-fin.EC])

May 25, 2017 by Quantitative Finance at arXiv   Comments (0)

The purpose of this paper is to focus on similarity and/or heterogeneity of
taxonomies of innovation present in the economic fields to show as the economic
literature uses different names to indicate the same type of technical change
and innovation, and the same name for different types of innovation. This
ambiguity of classification makes it impossible to compare the various studies;
moreover the numerous typologies existing in the economics of innovation,
technometrics, economics of technical...

PPT and the “God of the Gaps”

May 25, 2017 by The Reformed Broker   Comments (0)

Writing in centuries past, many scientists felt compelled to wax poetic about cosmic mysteries and God’s handiwork. Perhaps one should not be surprised at this: most scientists back then, as well as many scientists today, identify themselves as spiritually devout. But a careful reading of older texts, particularly those concerned with the universe itself, shows......

Data science and deep learning in retail

May 25, 2017 by The Practical Quant   Comments (0)

[A version of this post appears on the O'Reilly Radar.]The O’Reilly Data Show Podcast: Jeremy Stanley on hiring and leading machine learning engineers to build world-class data products.Subscribe to the O’Reilly Data Show Podcast to explore the opportunities and techniques driving big data, data science, and AI. Find us on Stitcher, TuneIn, iTunes, SoundCloud, RSS.In this episode of the Data Show, I spoke with Jeremy Stanley, VP of data science at Instacart, a popular grocery delivery service...

A Quantum-like Model of Selection Behavior. (arXiv:1705.08536v1 [q-fin.EC])

May 24, 2017 by Quantitative Finance at arXiv   Comments (0)

In this paper, we introduce a new model of selection behavior under risk that
describes an essential cognitive process for comparing values of objects and
making a selection decision. This model is constructed by the quantum-like
approach that employs the state representation specific to quantum theory,
which has the mathematical framework beyond the classical probability theory.
We show that our quantum approach can clearly explain the famous examples of
anomalies for the expected utility...

Financial Time Series Forecasting: Semantic Analysis Of Economic News. (arXiv:1705.08545v1 [q-fin.GN])

May 24, 2017 by Quantitative Finance at arXiv   Comments (0)

The paper proposes a method of financial time series forecasting taking into
account the semantics of news. For the semantic analysis of financial news the
sampling of negative and positive words in economic sense was formed based on
Loughran McDonald Master Dictionary. The sampling included the words with high
frequency of occurrence in the news of financial markets. For single-root words
it has been left only common part that allows covering few words for one
request. Neural networks were...

Warnings and Caveats in Brain Controllability

May 24, 2017 by Complexity Digest   Comments (0)

In this work we challenge the main conclusions of Gu et al work (Controllability of structural brain networks. Nature communications 6, 8414, doi:10.1038/ncomms9414, 2015) on brain controllability. Using the same methods and analyses on four datasets we find that the minimum set of nodes to control brain networks is always larger than one. We also find that the relationships between the average/modal controllability and weighted degrees also hold for randomized data and the there are not...