error in matrix multiplication.
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sir i am using a simple line of code..
v(1)=(x*w1(1,:)')+(1*bias1(1,1));
y(1)=1/(1+exp(-v(1))); "
where w1 is a 15x784 matrix, bias1 is a 1x15 matrix and x is a 1x784 matrix. the error shown while doing the simple vector multiplication is::::::::
[ ??? Error using ==> mtimes MTIMES is not fully supported for integer classes. At least one input must be scalar.
To compute elementwise TIMES, use TIMES (.*) instead.]
采纳的回答
While I don't see it at first blush in the code, one (or both) of the two variables must be integer class--
>> i1=eye(3);
>> i2=int16(ones(3,1));
>> i1*i2
Error using *
MTIMES is not fully supported for integer classes. At least one input must be scalar.
To compute elementwise TIMES, use TIMES (.*) instead.
>> i1*double(i2)
ans =
1
1
1
>>
See which is/are integers of some type and cast to a real (single or double) to do the computation.
ADDENDUM
On further inspection, the array train0 must be the integer-valued one...
x=double(train0(m,:))/255; %%picking a row from the set
will fix your present problem; whether you will then need to recast back to integer class for a result I don't know...
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