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How Does Amazon’s Alexa
Really Work?
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
Title
Text
IntroductionIntroduction
How Does Amazon’s Alexa
Really Work?
“Alexa, what’s the weather going to be like today.”
It’s taken decades for scientists to understand natural human speech to the point
where voice-activated interfaces such as Alexa, the natural language processing
system by Amazon, are sufficiently enabled to be successfully accepted by
consumers.
Alexa is who talks to users of Amazon’s Echo products including the Echo, Dot
and Tap, as well as Amazon Fire TV and other third-party products.
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
Title
Text
IntroductionIntroduction
How Does Amazon’s Alexa
Really Work?
Even since 2012, when the patent was filed for what would ultimately become
Amazon’s artificial intelligence system Alexa, there has been tremendous growth
in capabilities and the credit for that growth goes to machine learning.
For something that we do every day without giving it any thought, conversation
between machines and humans is complex. So, how did Amazon and others in
the space such as Google, Apple and Microsoft crack the code?
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
ABCs of Alexa
Over 30 million smart speakers were sold globally last year, and this number is
expected to grow to nearly 60 million this year. While Amazon remains the
industry leader in smart speakers selling about 20 million devices last year, others
(especially Google) are also growing and starting to catch up.
There are nuances to each, but let’s look “under the hood” of an Echo to see how
Alexa works.
While there is some capability contained in the Echo cylinder such as speakers, a
microphone and a small computer that can awake the system and blink its lights
to let you know it’s activated, its real capabilities occur once it sends whatever you
have told Alexa to the cloud to be interpreted by Alexa Voice Services (AVS).
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
ABCs of Alexa
So, when you ask Alexa, “What’s the weather going to be like today,” the device
records your voice. Then that recording is sent over the Internet to Amazon’s Alexa
Voice Services which parses the recording into commands it understands. Then,
the system sends the relevant output back to your device.
When you ask about the weather, an audio file is sent back and Alexa tells you the
weather forecast all without you having any idea there was any back and forth
between systems.
What that of course means is that if you lose internet connection Alexa is no
longer working.
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
ABCs of Alexa
The skills Echo has out of the box are impressive to most of us, but Amazon allows
and encourages approved developers free access to Alexa Voice Services so they
can create new Alexa skills to augment the system’s skill-set just as Apple did with
the app store.
As a result of this openness, the list of skills that Alexa (currently over 30,000) can
help with continues to grow rapidly. Users can, of course, purchase products from
Amazon, but they can also order pizza from Domino’s, hail a ride from Uber or
Lyft, control their light fixtures, make a payment through the Capital One skill, get
wine pairings for dinner and so much more.
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
Constantly Learning From Human Data
Data and machine learning is the foundation of Alexa’s power, and it’s only getting
stronger as its popularity and the amount of data it gathers increase.
Every time Alexa makes a mistake in interpreting your request, that data is used to
make the system smarter the next time around. Machine learning is the reason for
the rapid improvement in the capabilities of voice-activated user interface.
For example, Google speech was able to improve its error rate tremendously in a
year; now it recognizes 19 out of 20 words it hears. Understanding natural human
speech is a gargantuan problem, and we now have the computing power at our
disposal to make it better the more we use it.
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
The Challenges of Natural Language Generation
and Processing
As a subset of artificial intelligence, natural language generation (NLG) is the
ability to get natural sounding written and verbal responses back based on data
that’s input into a computer system.
Human language is quite complex, but today’s natural language generation
capabilities are becoming very sophisticated. Think of NLG as a writer that turns
data into language that can be communicated.
Natural language processing (NLP) is the reader that takes the language created
by NLG and consumes it. Advances in this technology have allowed dramatic
growth in intelligent personal assistants such as Alexa.
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
The Challenges of Natural Language Generation
and Processing
Voice-based AI is so appealing because it holds the promise of supporting in a
way that is natural to us humans; no swiping or typing necessary. That’s also why
it’s a technical challenge to build. Just think about how nonlinear your typical
conversation is.
When people talk they interrupt themselves, change topics or repeat themselves,
use body language to add meaning and use a wide variety of words that have
multiple meanings depending on the context. It’s like a parent trying to
understand the vernacular of teens, but much, much more complicated.
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
Amazon continues to have an army of specialists in
addition to a cadre of machines on the task of
making Alexa and Alexa Voice Services even better.
Their goal is to make spoken language a user
interface that is as natural as talking to another
human being.
I can’t wait to see what’s in store next.
© 2017 Bernard Marr , Bernard Marr & Co. All rights reserved
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
Bernard Marr is an internationally best-selling author, popular keynote speaker, futurist, and a
strategic business & technology advisor to governments and companies. He helps
organisations improve their business performance, use data more intelligently, and
understand the implications of new technologies such as artificial intelligence, big data,
blockchains, and the Internet of Things.
LinkedIn has ranked Bernard as one of the world’s top 5 business influencers. He is a frequent
contributor to the World Economic Forum and writes a regular column for Forbes. Every day
Bernard actively engages his 1.5 million social media followers and shares content that
reaches millions of readers.
Visit The
Website
© 2017 Bernard Marr , Bernard Marr & Co. All rights reserved
© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
Bernard Marr is an internationally best-selling author, popular keynote speaker, futurist, and a
strategic business & technology advisor to governments and companies. He helps
organisations improve their business performance, use data more intelligently, and
understand the implications of new technologies such as artificial intelligence, big data,
blockchains, and the Internet of Things.
LinkedIn has ranked Bernard as one of the world’s top 5 business influencers. He is a frequent
contributor to the World Economic Forum and writes a regular column for Forbes. Every day
Bernard actively engages his 1.5 million social media followers and shares content that
reaches millions of readers.
Visit The
Website
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© 2018 Bernard Marr, Bernard Marr & Co. All rights reserved
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How Does Amazon’s Alexa Really Work?

  • 1. How Does Amazon’s Alexa Really Work?
  • 2. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved Title Text IntroductionIntroduction How Does Amazon’s Alexa Really Work? “Alexa, what’s the weather going to be like today.” It’s taken decades for scientists to understand natural human speech to the point where voice-activated interfaces such as Alexa, the natural language processing system by Amazon, are sufficiently enabled to be successfully accepted by consumers. Alexa is who talks to users of Amazon’s Echo products including the Echo, Dot and Tap, as well as Amazon Fire TV and other third-party products.
  • 3. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved Title Text IntroductionIntroduction How Does Amazon’s Alexa Really Work? Even since 2012, when the patent was filed for what would ultimately become Amazon’s artificial intelligence system Alexa, there has been tremendous growth in capabilities and the credit for that growth goes to machine learning. For something that we do every day without giving it any thought, conversation between machines and humans is complex. So, how did Amazon and others in the space such as Google, Apple and Microsoft crack the code?
  • 4. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved ABCs of Alexa Over 30 million smart speakers were sold globally last year, and this number is expected to grow to nearly 60 million this year. While Amazon remains the industry leader in smart speakers selling about 20 million devices last year, others (especially Google) are also growing and starting to catch up. There are nuances to each, but let’s look “under the hood” of an Echo to see how Alexa works. While there is some capability contained in the Echo cylinder such as speakers, a microphone and a small computer that can awake the system and blink its lights to let you know it’s activated, its real capabilities occur once it sends whatever you have told Alexa to the cloud to be interpreted by Alexa Voice Services (AVS).
  • 5. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved ABCs of Alexa So, when you ask Alexa, “What’s the weather going to be like today,” the device records your voice. Then that recording is sent over the Internet to Amazon’s Alexa Voice Services which parses the recording into commands it understands. Then, the system sends the relevant output back to your device. When you ask about the weather, an audio file is sent back and Alexa tells you the weather forecast all without you having any idea there was any back and forth between systems. What that of course means is that if you lose internet connection Alexa is no longer working.
  • 6. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved ABCs of Alexa The skills Echo has out of the box are impressive to most of us, but Amazon allows and encourages approved developers free access to Alexa Voice Services so they can create new Alexa skills to augment the system’s skill-set just as Apple did with the app store. As a result of this openness, the list of skills that Alexa (currently over 30,000) can help with continues to grow rapidly. Users can, of course, purchase products from Amazon, but they can also order pizza from Domino’s, hail a ride from Uber or Lyft, control their light fixtures, make a payment through the Capital One skill, get wine pairings for dinner and so much more.
  • 7. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved Constantly Learning From Human Data Data and machine learning is the foundation of Alexa’s power, and it’s only getting stronger as its popularity and the amount of data it gathers increase. Every time Alexa makes a mistake in interpreting your request, that data is used to make the system smarter the next time around. Machine learning is the reason for the rapid improvement in the capabilities of voice-activated user interface. For example, Google speech was able to improve its error rate tremendously in a year; now it recognizes 19 out of 20 words it hears. Understanding natural human speech is a gargantuan problem, and we now have the computing power at our disposal to make it better the more we use it.
  • 8. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved The Challenges of Natural Language Generation and Processing As a subset of artificial intelligence, natural language generation (NLG) is the ability to get natural sounding written and verbal responses back based on data that’s input into a computer system. Human language is quite complex, but today’s natural language generation capabilities are becoming very sophisticated. Think of NLG as a writer that turns data into language that can be communicated. Natural language processing (NLP) is the reader that takes the language created by NLG and consumes it. Advances in this technology have allowed dramatic growth in intelligent personal assistants such as Alexa.
  • 9. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved The Challenges of Natural Language Generation and Processing Voice-based AI is so appealing because it holds the promise of supporting in a way that is natural to us humans; no swiping or typing necessary. That’s also why it’s a technical challenge to build. Just think about how nonlinear your typical conversation is. When people talk they interrupt themselves, change topics or repeat themselves, use body language to add meaning and use a wide variety of words that have multiple meanings depending on the context. It’s like a parent trying to understand the vernacular of teens, but much, much more complicated.
  • 10. © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved Amazon continues to have an army of specialists in addition to a cadre of machines on the task of making Alexa and Alexa Voice Services even better. Their goal is to make spoken language a user interface that is as natural as talking to another human being. I can’t wait to see what’s in store next.
  • 11. © 2017 Bernard Marr , Bernard Marr & Co. All rights reserved © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved Bernard Marr is an internationally best-selling author, popular keynote speaker, futurist, and a strategic business & technology advisor to governments and companies. He helps organisations improve their business performance, use data more intelligently, and understand the implications of new technologies such as artificial intelligence, big data, blockchains, and the Internet of Things. LinkedIn has ranked Bernard as one of the world’s top 5 business influencers. He is a frequent contributor to the World Economic Forum and writes a regular column for Forbes. Every day Bernard actively engages his 1.5 million social media followers and shares content that reaches millions of readers. Visit The Website © 2017 Bernard Marr , Bernard Marr & Co. All rights reserved © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved Bernard Marr is an internationally best-selling author, popular keynote speaker, futurist, and a strategic business & technology advisor to governments and companies. He helps organisations improve their business performance, use data more intelligently, and understand the implications of new technologies such as artificial intelligence, big data, blockchains, and the Internet of Things. LinkedIn has ranked Bernard as one of the world’s top 5 business influencers. He is a frequent contributor to the World Economic Forum and writes a regular column for Forbes. Every day Bernard actively engages his 1.5 million social media followers and shares content that reaches millions of readers. Visit The Website
  • 12. Title Subtitle Be the FIRST to receive news, articles, insights and event updates from Bernard Marr & Co straight to your inbox. Signing up is EASY! Simply fill out the online form and we’ll be in touch! © 2018 Bernard Marr, Bernard Marr & Co. All rights reserved