Wifi occasionally disappearing after OS X Yosemite upgrade

Recently I upgraded to OS X Yosemite. Since then everything has been working pretty much fine, except every so often my wifi connection suddenly disappears. I have to turn my wifi off and then on again to get my internet connection back. This isn't a huge deal to me (it could be worse) but it is very annoying. I have read about various "fixes" for this problem in Yosemite but I don't know if they are intended for my particular problem. Any help would be greatly appreciated.

1. Check the cycle count of the battery against the rated life for your model. The battery may be due for replacement. If the power adapter is connected almost all the time, the battery may need replacing even though the cycle count is not too high.
2. Follow these instructions, or these for OS X 10.8 or earlier.
3. In the Energy Saver preference pane, uncheck the box marked
          Enable Power Nap while on battery power
if it's shown (it may not be.)
4. You can also try resetting the SMC.
5. Make sure your system is up to date in Software Update.
6. Make a "Genius" appointment at an Apple Store, or go to another authorized service center.

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