This is Part 5 of a tutorial series on Term Vector Theory. Several global weight models are discussed and a brief introduction to MySQL implementation of the Vector Space Model presented.

The tutorial is available at

**28**
*Saturday*
May 2016

Posted Data Mining, IR Tutorials, Machine Learning, News, Programming

inThis is Part 5 of a tutorial series on Term Vector Theory. Several global weight models are discussed and a brief introduction to MySQL implementation of the Vector Space Model presented.

The tutorial is available at

**10**
*Tuesday*
May 2016

Posted calculators, Data Mining, IR Tools, IR Tutorials

in**Tags**

A new tool, The Fisher Transformations Tool is available at

http://www.minerazzi.com/tools/fisher/transformations.php

We have placed a link to its companion tutorial. BTW we have fixed some typos made in the reference section of the tutorial.

**09**
*Monday*
May 2016

Our tutorial on standard errors is back! It is now available at

http://minerazzi.com/tutorials/a-tutorial-on-standard-errors.pdf

We have edited and updated the tutorial. New material was added.

Enjoy it!

**07**
*Thursday*
Apr 2016

Posted Data Mining, IR Tutorials, Machine Learning, News, Newsletters, Programming, Vector Space Models

inThis is Part 4 of a tutorial series on Term Vector Theory. An introduction to several local weight models is presented.

The tutorial is available at

http://www.minerazzi.com/tutorials/term-vector-4.pdf

Local weights come in different flavors. This tutorial covers the following models:

FREQ

BNRY

LOGA

ATF1

ATFC

ATFA

LOGN

LOGG

LOGLN

SQRT

**17**
*Thursday*
Mar 2016

Posted Data Mining, IR Tutorials, Legacy Posts, Machine Learning, News, Queries, Vector Space Models

in**Tags**

Algorithms, Data Mining, Data Structures, information retrieval, ir, minerazzi, mining, text mining, tutorials

This is Part 3 of an introductory tutorial series on Term Vector Theory. The classic term frequency-inverse document frequency model or TF-IDF, is discussed.

Its advantages and limitations are discussed.

The tutorial is available at

http://www.minerazzi.com/tutorials/term-vector-3.pdf

For more tutorials, visit

http://www.minerazzi.com/tutorials

PS. Exercises where added to the tutorial and few typos removed.

**09**
*Wednesday*
Mar 2016

This is Part 2 of our introductory tutorial series on Term Vector Theory as used in Information Retrieval and Data Mining. The Binary (BNRY) and Term Count (FREQ) models are discussed.

The tutorial is available at

http://www.minerazzi.com/tutorials/term-vector-2.pdf

**29**
*Monday*
Feb 2016

Another fast-track tutorial updated and improved is back!

http://minerazzi.com/tutorials/term-vector-linear-algebra.pdf

This is a fast track tutorial on vector space calculations. A linear algebra approach is used. The tutorial covers term-document and term-query matrices, matrix transposition, dot products, cosine similarities, and local and global weights.

**22**
*Monday*
Feb 2016

**Tags**

data miners, Data Mining, information retrieval, miner, minerazzi, miners, mining, news, term vector theory, text mining

1. Starting with our classic Term Vector Theory series, we are republishing our series of tutorials on Information Retrieval from the early and mid 2000s. See http://www.minerazzi.com/tutorials/

2. A new miner on the Zika Virus is now available online at http://www.minerazzi.com/zika/

3. Additional miners are listed at http://www.minerazzi.com/

**03**
*Wednesday*
Feb 2016

Posted chemical mining, chemistry, Data Mining, IR Tutorials, News, Newsletters

in**Tags**

chemical mining, chemistry, chemistry myths, chemistry tutorials, electron configurations, Madelung Rule, minerazzi, mining, mnemonics, Rydberg Rule

I have uploaded a new, updated, and improved version of the tutorial:

A Novel Mnemonic for the Rydberg Rule,

A mnemonic is a memory aid device designed to improve recall. Mnemonics are popular tools in the classroom because help teachers and students to summarize large amounts of information without necessarily explaining facts. Conversely, mnemonics based on fallacies and blunders, or divorced from experimental results, can cause students more harm than good in their undergraduate studies.

At the time of writing, one cannot find in the chemical literature a straightforward mnemonic for writing electron configurations according to the Rydberg Rule. The purpose of this tutorial is to present such a novel mnemonic and, in the process, help chemistry students to properly write electron configurations.

Conceptual differences between the Madelung and Rydberg rules are identified and addressed. Myths and folklore-hilarious concepts regarding to the filling order of atomic orbitals are debunked.

**27**
*Wednesday*
Jan 2016

Posted calculators, chemical mining, Data Mining, IR Tools, IR Tutorials, News, Programming, Software

in**Tags**

chemistry, chemistry mining, Data Mining, electron configurations, Madelung Rule, minerazzi, miners, Rydberg Rule, text mining, tools

We have uploaded a new tutorial based on Rydberg Rule.

It is available at http://www.minerazzi.com/tutorials/rydberg-rule-mnemonic.pdf

We will soon upload a new version of the electron configurations tool to incorporate Rydberg Rule and more accurate experimental results.