Showing posts with label Machine Learning. Show all posts
Showing posts with label Machine Learning. Show all posts

Friday, June 30, 2017

Wolfram Alpha


https://www.wolframalpha.com/

Wolfram Alpha is a computational search engine (sometimes referred to as an "answer engine"). The interface looks similar to that of a regular search engine but queries typed into the search box result answers to specific questions rather than listings of websites that may be relevant to the query.

The Wolfram Alpha search box accepts natural language input in keyword, phrase, or sentence format, as well as mathematical equations. The results are dynamically computed. The project website lists the system's components:
  • Linguistic analysis
  • New kinds of algorithms for 1000+ domains
  • Curated data
  • 10+ trillion pieces of data from primary sources with continuous updating
  • Dynamic computation
  • 50,000+ types of algorithms & equations
  • Computed presentation
  • 5,000+ types of visual and tabular output.
Here are a few examples -- from a huge number of possibilities -- of categories, queries and results:

Units and Measures - Includes conversions, calculations, industrial measures, and so on. Under "units," examples include "get information and conversions for a unit," "get unit conversions for a quantity," "convert to a specified unit," "do a calculation with units," and "compare physical quantities and compute dimensionless combinations." Entering "1500 sq. ft primer" into the search box results in "18.7 liters" - the amount of primer required to cover that square footage. The result can be changed to display in gallons rather than liters. Typing in "U.S. women's size 5 shoe" yields a list of the dimensions of that size and its equivalent in other countries.

Physics - Includes mechanics, electricity and magnetism, thermodynamics, particle physics, quantum physics, and so on. Under "particle physics," examples include "get information about a particle," "specify a particle symbol," "compare several particles," "request a property of a particle," "do a calculation on particle properties," "compute the reduced mass of a system of two particles" and "get information about a particle accelerator." Typing "proton" into the search box yields the particle's mass, electric charge, particle type, quark content, quantum numbers, lifetime, symmetry operations and excitations.

People and History - Includes people, genealogy, political leaders, historical events, and so on. Under "people," examples include "get information about a person," "compare several people," "find a date or place associated with a person" and "use a birth or death date in a computation." Typing "Charlie Parker" into the search box yields the information that he was a jazz musician, along with his full name, places and dates of birth and death, an image and a timeline.

Wolfram Alpha was developed by Wolfram Research, a maker of mathematical software including Mathematica. The WolframAlpha website describes the ultimate goal of the project:

"We aim to collect and curate all objective data; implement every known model, method, and algorithm; and make it possible to compute whatever can be computed about anything. Our goal is to build on the achievements of science and other systematizations of knowledge to provide a single source that can be relied on by everyone for definitive answers to factual queries."

In this video, Stephen Wolfram, CEO of Wolfram Research, demonstrates and explains Wolfram Alpha:







Programming thought of the day:
  • My New Years resolution is 1080p.


Thursday, March 9, 2017

The Top 10 AI And Machine Learning Use Cases Everyone Should Know About


This is an interesting article I found at Forbes.com . This might help to understand and visualize how important and critical is working with Machine Learning technology. Possibilities are endless, but for now, we are going to focus on 10 examples.... enjoy!


by: Bernard Marr

Machine learning is a buzzword in the technology world right now, and for good reason: It represents a major step forward in how computers can learn.

Very basically, a machine learning algorithm is given a “teaching set” of data, then asked to use that data to answer a question. For example, you might provide a computer a teaching set of photographs, some of which say, “this is a cat” and some of which say, “this is not a cat.” Then you could show the computer a series of new photos and it would begin to identify which photos were of cats.

Machine learning then continues to add to its teaching set. Every photo that it identifies — correctly or incorrectly — gets added to the teaching set, and the program effectively gets “smarter” and better at completing its task over time.

It is, in effect, learning.


1. Data Security

Malware is a huge — and growing — problem. In 2014, Kaspersky Lab said it had detected 325,000 new malware files every day. But, institutional intelligence company Deep Instinct says that each piece of new malware tends to have almost the same code as previous versions — only between 2 and 10% of the files change from iteration to iteration. Their learning model has no problem with the 2–10% variations, and can predict which files are malware with great accuracy. In other situations, machine learning algorithms can look for patterns in how data in the cloud is accessed, and report anomalies that could predict security breaches.

2. Personal Security

If you’ve flown on an airplane or attended a big public event lately, you almost certainly had to wait in long security screening lines. But machine learning is proving that it can be an asset to help eliminate false alarms and spot things human screeners might miss in security screenings at airports, stadiums, concerts, and other venues. That can speed up the process significantly and ensure safer events.


3. Financial Trading

Many people are eager to be able to predict what the stock markets will do on any given day — for obvious reasons. But machine learning algorithms are getting closer all the time. Many prestigious trading firms use proprietary systems to predict and execute trades at high speeds and high volume. Many of these rely on probabilities, but even a trade with a relatively low probability, at a high enough volume or speed, can turn huge profits for the firms. And humans can’t possibly compete with machines when it comes to consuming vast quantities of data or the speed with which they can execute a trade.


4. Healthcare

Machine learning algorithms can process more information and spot more patterns than their human counterparts. One study used computer assisted diagnosis (CAD) when to review the early mammography scans of women who later developed breast cancer, and the computer spotted 52% of the cancers as much as a year before the women were officially diagnosed. Additionally, machine learning can be used to understand risk factors for disease in large populations. The company Medecision developed an algorithm that was able to identify eight variables to predict avoidable hospitalizations in diabetes patients.

5. Marketing Personalization

The more you can understand about your customers, the better you can serve them, and the more you will sell. That’s the foundation behind marketing personalisation. Perhaps you’ve had the experience in which you visit an online store and look at a product but don’t buy it — and then see digital ads across the web for that exact product for days afterward. That kind of marketing personalization is just the tip of the iceberg. Companies can personalize which emails a customer receives, which direct mailings or coupons, which offers they see, which products show up as “recommended” and so on, all designed to lead the consumer more reliably towards a sale.

6. Fraud Detection

Machine learning is getting better and better at spotting potential cases of fraud across many different fields. PayPal, for example, is using machine learning to fight money laundering. The company has tools that compare millions of transactions and can precisely distinguish between legitimate and fraudulent transactions between buyers and sellers.

7. Recommendations

You’re probably familiar with this use if you use services like Amazon or Netflix. Intelligent machine learning algorithms analyze your activity and compare it to the millions of other users to determine what you might like to buy or binge watch next. These recommendations are getting smarter all the time, recognizing, for example, that you might purchase certain things as gifts (and not want the item yourself) or that there might be different family members who have different TV preferences.

8. Online Search

Perhaps the most famous use of machine learning, Google and its competitors are constantly improving what the search engine understands. Every time you execute a search on Google, the program watches how you respond to the results. If you click the top result and stay on that web page, we can assume you got the information you were looking for and the search was a success. If, on the other hand, you click to the second page of results, or type in a new search string without clicking any of the results, we can surmise that the search engine didn’t serve up the results you wanted — and the program can learn from that mistake to deliver a better result in the future.

9. Natural Language Processing (NLP)

NLP is being used in all sorts of exciting applications across disciplines. Machine learning algorithms with natural language can stand in for customer service agents and more quickly route customers to the information they need. It’s being used to translate obscure legalese in contracts into plain language and help attorneys sort through large volumes of information to prepare for a case.

10. Smart Cars

IBM recently surveyed top auto executives, and 74% expected that we would see smart cars on the road by 2025. A smart car would not only integrate into the Internet of Things, but also learn about its owner and its environment. It might adjust the internal settings — temperature, audio, seat position, etc. — automatically based on the driver, report and even fix problems itself, drive itself, and offer real time advice about traffic and road conditions.





Programming thought of the day:

  • Maybe if we start telling people the brain is an app they will start using it.


Monday, January 9, 2017

What is the difference between Data Analytics, Data Analysis, Data Mining, Data Science, Machine Learning, and Big Data?


Lately, I've been doing some research on Machine Learning, which seems to be very interesting and impressive from my point of view. Creating software was always interesting, but coding to "educate" your software in a way that it can learn from previous experiences makes this even more interesting and more impressive. However, if you try to find information about Machine Learning, you will see some other topics that are closely related to it, which are: Data Analytics, Data Analysis, Data Mining, Data Science, and Big Data but, How do they differ from each other?

Here are some core concepts:

Data AnalyticsAnalytics is about applying a mechanical or algorithmic process to derive the insights for example running through various data sets looking for meaningful correlations between them. 

Data AnalysisAnalysis is really a heuristic activity, where scanning through all the data the analyst gains some insight

Data Miningthis term was most widely used in the late 90's and early 00's when a business consolidated all of its data into an Enterprise Data Warehouse. All of that data was brought together to discover previously unknown trends, anomalies and correlations such as the famed 'beer and diapers' correlation (Diapers, Beer, and data science in retail).

Data Sciencea combination of mathematics, statistics, programming, the context of the problem being solved, ingenious ways of capturing data that may not be being captured right now plus the ability to look at things 'differently' (like this Why UPS Trucks Don't Turn Left ) and of course the significant and necessary activity of cleansing, preparing and aligning the data.

Machine Learningthis is one of the tools used by data scientist, where a model is created that mathematically describes a certain process and its outcomes, then the model provides recommendations and monitors the results once those recommendations are implemented and uses the results to improve the model

In addition, I found a discussion about this topic and I wanted to share some thoughts which I consider it can help to clarify:

"The way I see it, machine learning is concerned with algorithms whose performance at some task improves as it gains experience at that task, while data mining is concerned with analysing data for the purpose of discovering unforeseen patterns or properties.

So the similarities are obvious, they both look at data, and hope to extract something of value from it. As I see it, the main difference is whether the goal is to reproduce known knowledge (I know that some of these pictures are cats, and some are dogs, now can some algorithm learn that?), or if the goal is to discover unknown knowledge (is there any interesting structure in this data set?). The two are, unsurprisingly, intertwined, as many of the properties or structure one may be searching for in data mining can be identified by machine learning algorithms. For instance, in data mining, one might be interested in determining if clusters of a certain form appear in the data, and could use a machine learning algorithm like k-means. K-means is a learning algorithm, in that if data has a known structure, it can learn it (under specific conditions, blah blah blah).

So data mining is exploratory, machine learning is focused on solving specific tasks well. That's my take on it, anyway." (by: Jordan Frank)


The following graphic nicely summarizes what all is involved in data science.










Programming thought of the day:


  • The truth is out there. Anybody got the URL?