The key points for RAKE is the parameters setting, and RAKE provides a method to select a proper parameters based on the train data.

We list out the top 20 popular Machine Learning R packages by analysing the most downloaded R packages from Jan-May 2015. Bio: Bhavya Geethika is pursuing a masters in Management Information Systems at University of Illinois at Chicago. Her areas of interests include Statistics & Data Mining for Business, Machine learning and Data-Driven Marketing.

In an announcement made on Wednesday at its GCP Next conference in San Francisco, tech giant Google said that it is rolling out the private beta of a new Cloud Machine Learning service which will enable businesses to create a custom machine learning model for predicting the future of their ventures. According to the details shared by Google, the Cloud Machine Learning service has the capability to handle data ingestion and training, and subsequently make use of the resultant machine-learning model to make predictions for a business' future. Google said that for building a custom machine learning model that can make future predictions for the future of a business, users of the Cloud Machine Learning service need to work with data which they have stored in Google's other cloud services. In a demonstration of the creation of a custom machine learning model for predicting the future of a business, Jeff Dean -- the chief of Google's Brain deep-learning research project -- showed how the Cloud Machine Learning service could build a model which predicts a click by a consumer on an advertisement. The model demonstrated by Dean, to show how the Cloud Machine Learning service works, was based on marketing software firm Criteo's anonymized data pertaining to consumers' chances of clicking on an advertisement.

The Defense Department has decided to make a game out of the problem of spectrum crowding. The Spectrum Collaboration Challenge (SC2), the Defense Advanced Projects Research Agency's newest Grand Challenge, will reward teams that develop systems that collaboratively (as opposed to competitively) adapt in real time to changes in congested electromagnetic spectrum, DARPA said in a release. SC2's primary goal is to imbue radios with advanced machine-learning capabilities to collectively develop strategies for optimizing use of the wireless spectrum that aren't possible today due to the intrinsically inefficient approach of pre-allocating exclusive access to designated frequencies. Making more efficient use of the finite spectrum environment has become a DOD priority as the spectrum becomes ever more crowded, and DOD has to comply with a presidential order to free up 500 MHz of its spectrum for commercial use by 2020. "I think today we're in a good spot…We did well with the last auction and the money is there to change where DOD can move and share spectrum," DOD CIO Terry Halvorsen said on March 22.

Ray Kurzweil wants to set the record straight on artificial intelligence. Yeah, sure, some elements of the narrative about developing computers that can think like humans have been exaggerated. But--A.I. technology is already much more advanced than you probably think it is. That was the theme of a conversation between Kurzweil, Google's director of engineering, and CNBC's Bob Pisani at the Exponential Finance conference in New York City on Wednesday. Kurzweil, named one of Inc. magazine's "26 Most Fascinating Entrepreneurs" back in 2005--we referred to him as "Edison's rightful heir"--is an inventor and futurist responsible for the first machine to recognize printed text and the first print-to-speech reading device, among other inventions.

Less than a day after Microsoft launched its new artificial intelligence bot Tay, she has already learned the most important lesson of the internet: Never tweet. Microsoft reportedly had to suspend Tay from tweeting after she tweeted a series of racist statements, including "Hitler was right I hate the jews." The company had launched the AI on Wednesday, which was designed to communicate with "18 to 24 year olds in the U.S" and "experiment with and conduct research on conversational understanding." It appears some of her racist replies were simply regurgitating the statements trolls tweeted at her. Tay also apparently went from "i love feminism now" to "i fucking hate feminists they should all die and burn in hell" within hours. Zoe Quinn, a target of online harassment campaign Gamergate, shared a screengrab from the bot calling her a "Stupid Whore," saying, "this is the problem with content-neutral algorithms."

We are on the brink of a major disruption, which we think might be bigger than the industrial revolution. At BootstrapLabs we are focusing heavily on a major shift that is impacting almost every sector: Artificial Intelligence – AI. AI has reached an inflection point, where it can now be applied to quickly drive efficient returns, and in our book, is ripe for building startups that will disrupt major markets and their incumbents. During the Industrial Revolution, the steam engine enabled a major technological shift as a large amount of manual labor was now able to be automated. Yet, few know that the first version of the steam engine was actually built the 1st century CE and was called Aeolipile.

Microsoft's "Tay" social media AI experiment has gone awry in a turn of events that will shock absolutely nobody. The Redmond chatbot had been set up in hopes of developing a personality similar to that of a young woman in the 18-24 age bracket. The intent was for "Tay" to develop the ability to sustain conversations with humans on social media just as a regular person could, and learn from the experience. Twitter is awash with chatbots like this. Unfortunately, Microsoft neglected to account for the fact that one of the favorite pastimes on the internet is ruining other people's plans with horrific consequences.

Microsoft has been forced to dunk Tay, its millennial-mimicking chatbot, into a vat of molten steel. The company has terminated her after the bot started tweeting abuse at people and went full neo-Nazi, declaring that "Hitler was right I hate the jews." Some of this appears to be "innocent" insofar as Tay is not generating these responses. Rather, if you tell her "repeat after me" she will parrot back whatever you say, allowing you to put words into her mouth. However, some of the responses were organic.

Changing world: "As the first generation of self-driving cars and battlefield warbots filter into society, scientists are working to develop robots with moral decision-making skills." THE World Science Festival held in Brisbane in early March confirmed that robots, artificial intelligence and machine learning were now part of our lives. Thousands attending the festival came to watch, touch and play with cute, shiny robots capable of dodging objects, following commands and engaging in smart banter. However, if the future has arrived, now we have to deal with it. The World Science Festival was also an important forum as world experts discussed robot morality and ethics and what role we wanted robots to play in the future.