read vector(65536*5*typeis double) in android

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i want recognize face i use fisherface algoritm so i create mean and w vector in pc these vector saved .xml files

i use TaFileStorage code :

http://answers.opencv.org/question/8873/best-way-to-store-a-mat-object-in-android/

but it's too slow and my phone had stopped

i want read .xml fast in android