The Azure miner is available now at
It can help you to find Microsoft Azure public resources, news, and more. Recrawling search result pages allows you to build your own curated collection. Be productive with the Azure miner.
In addition, the news section includes relevant search, blog, and community channels.
Happy Azure day! 🙂
This is Part 2 of a tutorial series on the nonadditivity of correlation coefficients. This time we discuss Fisher r-to-Z and Z-to-r transformations and the risks of arbitrarily implementing these.
Misusing the transformations can have a detrimental impact on significance testing, confidence intervals, reported standard errors of correlations, and meta-analysis.
The tutorial is available at
This is Part 1 of a tutorial series on the nonadditivity of correlation coefficients. We demonstrate why it is not possible to arithmetically add, subtract, and average Pearson’s r or Spearman’s rs.
The article is available at
07-04-2017 update: In page 1 the line for the Beta1 should read “is the slope of a simple linear regression model”. My fault. Fixed today along with few other nuances.
This is a nice course on Memory Based Reasoning in AI taught by Dr. Deepak Khemani and Dr. Sutanu Chakraborti at the Department of Computer Science & Engineering, Indian Institute of Technology Madras, Chennai, India. See
Happy to see that the following readings from the course are based on two articles we published long time ago at Mi Islita.com, now a search engine site about Puerto Rico resources.
Vector Space Models
Here is a python-based search engine with an implementation inspired on one of our papers at the old Mi Islita.com site, now a search engine on Puerto Rico.
This module replicates the miislita vector spaces from
"A Linear Algebra Approach to the Vector Space Model -- A Fast Track Tutorial"
by Dr. E. Garcia...
Great and positive accomplishment!
That tutorial is no longer at miislita.com, but was long ago moved to minerazzi.com. Find it here:
For other resources do a search for python in our IR miner at
For inquiries about that implementation, contact its author.
For other inquiries, applications, suggestions, drop me a line.
PS. Please note that Nullege.com itself is a search engine for finding python code. Here is a good example: http://nullege.com/codes/search/wx.calendar.CalendarCtrl
In a recent post,
we mentioned a design pattern for easily cross-mapping all experimental variables from a given model. By applying the pattern to the Nernst Equation, we were able to develop the Standard Electrode Potentials Calculator which cross-maps all 4 experimental terms from said equation. This tool is available at
In this post we just want to mention that by applying the same design pattern to the Goldman-Hodgkin-Katz (GHK) Equation we were able to develop the Membrane Potentials Calculator, which cross-maps 12 experimental terms. This new tool is available now at
Examples on how to do the mapping of variables are given in the Suggested Exercises section of the tool.
Overall, we are confident that the patterns used in the design of these tools can be applied, across disciplines, to mathematical models consisting of more experimental variables.
The following complementary collections were reindexed and updated
Information Retrieval, http://www.minerazzi.com/irc
Data Structures & Algorithms, http://www.minerazzi.com/dsac
Both include RSS news channels to Bing, Google, MIT, and Arxiv so users can easily find news relevant to these collections.
This post is part of a series of blog posts on Mind Retrieval (MR) that we started long time ago.
Another step closer to MR is provided below:
The abstract states and quote
“Despite partial success, communication has remained impossible for persons suffering from complete motor paralysis but intact cognitive and emotional processing, a state called complete locked-in state (CLIS). Based on a motor learning theoretical context and on the failure of neuroelectric brain–computer interface (BCI) communication attempts in CLIS, we here report BCI communication using functional near-infrared spectroscopy (fNIRS) and an implicit attentional processing procedure. Four patients suffering from advanced amyotrophic lateral sclerosis (ALS)—two of them in permanent CLIS and two entering the CLIS without reliable means of communication—learned to answer personal questions with known answers and open questions all requiring a “yes” or “no” thought using frontocentral oxygenation changes measured with fNIRS. Three patients completed more than 46 sessions spread over several weeks, and one patient (patient W) completed 20 sessions. Online fNIRS classification of personal questions with known answers and open questions using linear support vector machine (SVM) resulted in an above-chance-level correct response rate over 70%. Electroencephalographic oscillations and electrooculographic signals did not exceed the chance-level threshold for correct communication despite occasional differences between the physiological signals representing a “yes” or “no” response. However, electroencephalogram (EEG) changes in the theta-frequency band correlated with inferior communication performance, probably because of decreased vigilance and attention. If replicated with ALS patients in CLIS, these positive results could indicate the first step towards abolition of complete locked-in states, at least for ALS.”
End of the quote.
This article is also quoted at the Wyss Center site:
A Spanish news derivative version can be read from
The Wyss Center also has a neurotech challenge:
so MR going mainstream is a matter of time.
As mentioned many times before, Mind Retrieval is a promisory information retrieval paradigm. See our previous posts on this topic below:
Check the new CSS animated interface of our LIGO Miner.
To view it you need a browser that supports modern CSS rules.
CSS Animation Credits: http://codepen.io/heyvian/pen/oihDk
This animation consists of minor tweaks we added to their original work.
Please give proper credits if you want to reuse or modify it.
The classic splash interface is still accessible through the new one.
Have some LIGO 🙂