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Description
Data Analysis with Open Source Tools: A Hands-On Guide for Programmers and Data ScientistsCollecting data is relatively easy, but turning raw information into something useful requires that you know how to extract precisely what you need. With this insightful book, intermediate to experienced programmers interested in data analysis will learn techniques for working with data in a business environment. You'll learn how to look at data to discover what it contains, how to capture those ideas in conceptual models, and then feed your
Collecting data is relatively easy, but turning raw information into something useful requires that you know how to extract precisely what you need. With this insightful book, intermediate to experienced programmers interested in data analysis will learn techniques for working with data in a business environment. You'll learn how to look at data to discover what it contains, how to capture those ideas in conceptual models, and then feed your understanding back into the organization through business plans, metrics dashboards, and other applications.
Along the way, you'll experiment with concepts through hands-on workshops at the end of each chapter. Above all, you'll learn how to think about the results you want to achieve -- rather than rely on tools to think for you.
- Use graphics to describe data with one, two, or dozens of variables
- Develop conceptual models using back-of-the-envelope calculations, as well asscaling and probability arguments
- Mine data with computationally intensive methods such as simulation and clustering
- Make your conclusions understandable through reports, dashboards, and other metrics programs
- Understand financial calculations, including the time-value of money
- Use dimensionality reduction techniques or predictive analytics to conquer challenging data analysis situations
- Become familiar with different open source programming environments for data analysis
"Finally, a concise reference for understanding how to conquer piles of data."--Austin King, Senior Web Developer, Mozilla
"An indispensable text for aspiring data scientists."--Michael E. Driscoll, CEO/Founder, Dataspora
Binding Type: Paperback
Publisher: O'Reilly Media
Published: 12/07/2010
ISBN: 9780596802356
Pages: 509
Weight: 1.85lbs
Size: 9.20h x 7.00w x 1.40d
Review Citations: Reference and Research Bk News 02/01/2011 pg. 247
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4.6 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
200 Watts… More Like *2000 Watts!
Style: R-S202BL, Configuration: receiver only
This system is really nice and I mean it! Not a lot of information on this unit but what I can say is this system gets extremely loud to the point where you can lose your hearing from it. There is no distortion from this system even at max volume. I like music loud but this loud is on the next level and this is coming from a guy who has a lot of audio equipment and experience in the audio and FM broadcast industry! The nice thing is FM sounds wonderful on this unit. FM radio sensitivity is just wonderful like a high end receiver or like a good car FM radio. The wire provided to get radio reception wasn’t the best but a good tip is to put the wire next to the speaker wires to act like a ground plane but I highly recommend to get a good FM radio antenna that goes on your roof of your house for superior reception. AND no, the speaker wires don’t interfere with reception!!!
I was skeptical due to the lack of information on this Yamaha, but I took that risk. I always knew Yamaha always been a very premium brand for audio and receivers but then you watch videos online about this unit they hate on it for being a cheap system when this isn’t true. This unit is for someone who wants a: Basic Semi Audiophile Stereo (Left and Right Sound) FM Radio, Line In or CD Playback, if you buy the cd reader separate. The video I provide is this stereo shaking my cheap old school 80s 8 inch bookshelf speakers.
The only con is no sub out port.
Irrelevant information starts here:
The setup you see in the video is only temporary as we are remodeling the house and garage this stereo is currently in. Are new house is being currently being built in the country and after are new garage is built I’ll be putting this stereo in there and be setting this up with 2 outdoor Yamaha AW-350s on our back deck by the fire pit and the 2 old school 80s speakers in the garage. (Also a FM antenna mast for extreme FM radio reception.) The idea is the backyard would have good audio for music and are front yard would also get some good ported sound from the garage. Overall me and my family spends a lot of time outdoors no phones and little to no internet time just hanging out listening to music. The reason I am sharing this is because this is what I see a unit like this being used for.
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Reviewed in the United States on April 8, 2025
★★★★★ 1
Weak, Flat, Tinny Sound
Style: R-S202BL, Configuration: receiver only
My Insignia NS-STR514 suddenly died after a year of glorious sound (device still turned on, switch inputs, etc, just no sound), and I had to find another stereo receiver to replace it. Yamaha seemed to be a pretty popular brand, especially among musicians and home theater enthusiasts, so I figured I couldn't go wrong. Wrong.
From the minute I hooked this receiver up I noticed a significant drop in power, range, and overall quality. This device is advertised as having the same 100w of power per channel, so this is really surprising for a major brand. I used to have to turn the Insignia up to 20, but this device has to be turned up to 44 to get the same loudness. When you do get this device cranked up enough to hear something, the sound is very flat. There's no other way to describe it. There's no range. Even if bass cranked to max you can barely hear it. The treble is weak, flat, and distorts at high volume. This device is literally making my stereo speakers that cost $300.00 each sound like a boom box from the 90's. I was considering upgrading my turntable to a higher quality one, but now, what's the point?
On the flip side, the sound is clean, crisp. But man oh man is it flat. These days I mostly listen to music on high grade headphones and watch movies and streaming on my projector so it's not a huge loss (high fidelity sound on video games and movies isn't a huge deal to me), but don't buy this for your entry-level audiophile needs. There's got to be better options out there than this. The weak bass especially is unforgivable.
*Update 04/25/17*
My wife finally grew so tired of this piece of junk that I got rid of it and bought another Insignia Stereo Receiver. Unreliable as it is (dead after 2 years) it's still better than this garbage.
The bass response is absolutely horrible, and the neighbors started complaining about the "booming". That's pretty much the only bass you get from this device. A loud, cheap-sounding thumping. The frequency response of this device is so poor, and the sound so thin and tinny, that even my wife couldn't stand it! Do yourself a favor and avoid this one.
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Reviewed in the United States on February 15, 2017
★★★★★ 5
Excellent purchase
Style: R-S202BL, Configuration: receiver only
Good looking stereo and everything works perfectly, excellent reception and all the music is very clear at any volume (only went up to 55 out of 99).
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Excellent Quality Wire Lugs and Adhesive Heat Shrink Set
Size: 2/0 Awg - 3/8" (M10) Ring, Number of Items: 10
I recently purchased the 10pcs 2/0 AWG-3/8" Wire Lugs Ring Terminal Connectors along with the 10pcs 3:1 Dual Wall Adhesive Heat Shrink set from Amazon and I must say, I am thoroughly impressed with the quality and performance of this product!
Firstly, the wire lugs are exceptionally well-made with heavy-duty materials. The copper construction ensures excellent conductivity, making them ideal for various electrical applications. The 2/0 American Wire Gauge size with a 3/8" ring terminal is perfect for my specific needs, and they fit securely on the cables, providing a reliable and sturdy connection.
The wire lugs come with the corresponding 3:1 dual wall adhesive heat shrink tubes, which are an excellent addition to the set. These heat shrink tubes offer superior insulation and protection, making sure that the connection is secure and insulated against any potential damage or short-circuiting. The adhesive lining within the heat shrink tubes ensures a tight and waterproof seal, further enhancing the reliability of the connection.
I found the installation process to be straightforward and hassle-free. The wire lugs are easy to crimp onto the cables, and the heat shrink tubes shrink perfectly around the connection using a heat gun. The adhesive within the heat shrink tubes bonds effectively, leaving no room for any moisture or contaminants to compromise the connection.
Overall, I highly recommend the 10pcs 2/0 AWG-3/8" Wire Lugs Ring Terminal Connectors and 10pcs 3:1 Dual Wall Adhesive Heat Shrink set. The quality and performance of this product exceeded my expectations. Whether you're working on automotive projects, marine applications, or any electrical wiring projects, this set will undoubtedly fulfill your requirements. It's a fantastic value for the price, providing reliable and secure connections.
I'm extremely satisfied with my purchase, and I will definitely be purchasing more in the future for my upcoming projects. Don't hesitate – give this product a try, and you won't be disappointed!
Disclosure: I received no incentive or compensation for providing this review. My review is based on my personal experience as a customer.
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Reviewed in the United States on December 27, 2023
★★★★★ 5
Two thumbs up
Size: 1/0 Awg - 3/8" (M10) Ring, Number of Items: 4, Size: 1/0 Awg - 3/8" (M10) Ring, Number of Items: 4
Very nice battery lugs. They are not thin junk & they fit. I used a hydraulic crimper which gave me an excellent crimp. Well worth the money.
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Reviewed in the United States on April 17, 2026
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