Whenever I think of that pattern, it reminds me of Jennifer Lopez.
Don't get me wrong, double bottom pattern reminds me of her song,
her music. I love J.Lo's voice, nothing fussy about that. I swear!

Double bottom  is a major reversal pattern. It signifies that a downtrend
is over and heed for an uptrend. The degree of reversal depends on
what time period of chart we are looking at. Daily, weekly and monthly
charts are the best charts to look for double bottoms. Whipsaws and
noise created by volatility are highly probable if one is using 1-hr,
30-min, 5-min or 1-min charts.

Double bottom pattern is like the letter "w". The curve is sometimes sharp,
sometime flat. The pattern varies in sizes as well. There are patterns that looks cute,
some are nasty looking, some may look akward. The cute ones will remind you of
J. Lo's, her voice I mean.

In every major reversal, there'a an accompanying confirmation, test or traps. Double
bottom pattern is very much subject to such. As a technician, I cannot predict a reversal
based on a small bounce after a big drop. What I can do is look into the pattern's accompanying
factors that a reversal may happen. Accurate predictions do happen especially if it's after the fact.
No technical analysis can beat that.

One pattern I'm looking at when I suspect a double pattern is the wedge. Wedge is a technical
term for "greater than" symbol in mathematics. ">" is a resemblance of a wedge pattern. Wedges
varies in sizes as well, but I don't think of  J.Lo when I see a wedge.

For me, wedges is the confirmation, test or traps that accompanies whenever there is a major reversal
pattern such as double bottom. Paterns do exist within a pattern, sometimes within another pattern.
The important thing to look at is what pattern dominates the trend.

The chart below is one classic example of a double bottom pattern. ]

BEL - Daily Chart

BEL - Weekly Chart