Python scipy.load函数代码示例

def cv(nn_name,d_num = 10000,k_fold = 7,score_metrics = 'accuracy',verbose = 0):
    suff = str(nn_name[:2])
    if nn_name.find('calib') > 0:
        X_data_name = 'train_data_icalib_'+ suff +  '.npy'
        y_data_name = 'labels_icalib_'+ suff + '.npy'
    else:
        X_data_name = 'train_data_'+ suff +  '.npy'
        y_data_name = 'labels_'+ suff + '.npy'
    X,y = sp.load(X_data_name),sp.load(y_data_name)
    d_num = min(len(X),d_num)        
    X = X[:d_num]
    y = y[:d_num] 
    rates12 = sp.hstack((0.05 * sp.ones(25,dtype=sp.float32),0.005*sp.ones(15,dtype=sp.float32),0.0005*sp.ones(10,dtype=sp.float32)))
    rates24 = sp.hstack((0.01 * sp.ones(25,dtype=sp.float32),0.0001*sp.ones(15,dtype=sp.float32)))
    rates48 = sp.hstack ([0.05 * sp.ones(15,dtype=sp.float32),0.005*sp.ones(10,dtype=sp.float32) ])
    if nn_name == '48-net':
        X12 = sp.load('train_data_12.npy')[:d_num]
        X24 = sp.load('train_data_24.npy')[:d_num]
    elif nn_name == '24-net':
        X12 = sp.load('train_data_12.npy')[:d_num]
        
    if score_metrics == 'accuracy':
        score_fn = accuracy_score
    else:
        score_fn = f1_score 
    scores = []
    iteration = 0
    for t_indx,v_indx in util.kfold(X,y,k_fold=k_fold):
        nn = None
        X_train,X_test,y_train,y_test = X[t_indx], X[v_indx], y[t_indx], y[v_indx]
        
        #print('\t \t',str(iteration+1),'fold out of ',str(k_fold),'\t \t' )
        if nn_name == '24-net':
            nn = Cnnl(nn_name = nn_name,l_rates=rates24,subnet=Cnnl(nn_name = '12-net',l_rates=rates12).load_model(
            '12-net_lasagne_.pickle'))
            nn.fit(X = X_train,y = y_train,X12 = X12[t_indx])
        elif nn_name == '48-net':
            nn = Cnnl(nn_name = nn_name,l_rates=rates48,subnet=Cnnl(nn_name = '24-net',l_rates=rates24,subnet=Cnnl(nn_name = '12-net',l_rates=rates12).load_model(
            '12-net_lasagne_.pickle')).load_model('24-net_lasagne_.pickle'))
            nn.fit(X = X_train,y = y_train,X12 = X12[t_indx],X24 = X24[t_indx])
        else:
            
            nn = Cnnl(nn_name = nn_name,l_rates=rates12,verbose=verbose)
            nn.fit(X = X_train,y = y_train)
    
        if nn_name == '24-net':  
            y_pred = nn.predict(X_test,X12=X12[v_indx])
        elif nn_name == '48-net':
            y_pred = nn.predict(X_test,X12=X12[v_indx],X24=X24[v_indx])
        else:
            y_pred = nn.predict(X_test)
        score = score_fn(y_test,y_pred)
        
        #print(iteration,'fold score',score)
        scores.append(score)
        iteration += 1
    score_mean = sp.array(scores).mean()
    print(d_num,'mean score',score)
    return score_mean

    def ParseToDataContainers(self,
                              Delimiter=None):
#       Parse an input file into the DataContainers object
        DCs  = DataContainer.DataContainers()
        if(re.search('.npy',self.GetName())):
            Arrays = None
            if(self.GetboCompressed()):
                Arrays = scipy.load(self.GetDecomprName())
            else:
                Arrays = scipy.load(self.GetName())
            Header = Arrays[:,0].tolist()
            for i in xrange(len(Header)):
                Name                     = Header[i] # The names of the datacontainers are determined by the
                                                     # header column names.
                DCs.DataContainers[Name] = DataContainer.DataContainer()
                DCs.Names2Columns[Name]  = i
                DCs.Columns2Names[i]     = Name
                DCs.DataContainers[Name].SetDataArray(Arrays[i,1:])
                DCs.DataContainers[Name].SetDataName(Name)
            del Arrays
        else:
            Line = self.GetFileHandle().readline()
            if(self.GetboHeader()):
                Line  = re.sub('#','',Line)
                Names = Line.strip().split(Delimiter) # The file should be space or tab delimited!
                for i in range(len(Names)):
                    Name                     = Names[i] # The names of the datacontainers are determined by the
                                                        # header column names.
                    DCs.DataContainers[Name] = DataContainer.DataContainer()
                    DCs.Names2Columns[Name]  = i
                    DCs.Columns2Names[i]     = Name
                    DCs.DataContainers[Name].InitDataArray()
                    DCs.DataContainers[Name].SetDataName(Name)
            else:
                LSplit = Line.strip().split(Delimiter)
                for i in range(len(LSplit)):
                    Name                     = str(i)
                    DCs.DataContainers[Name] = DataContainer.DataContainer()
                    DCs.Names2Columns[Name]  = i
                    DCs.Columns2Names[i]     = Name
                    DCs.DataContainers[Name].InitDataArray()
                    DCs.DataContainers[Name].SetDataName(Name)
                    Entry = LSplit[i]
                    DCs.DataContainers[Name].AppendToArray(Entry)

            for Line in self.GetFileHandle():
                LSplit = Line.strip().split(Delimiter)
                for i in range(len(LSplit)):
                    Name  = DCs.Columns2Names[i]
                    Entry = LSplit[i]
                    DCs.DataContainers[Name].AppendToArray(Entry)

        for Key in DCs.DataContainers.iterkeys():
            DCs.DataContainers[Key].CastDataArrayToScipy() # Make scipy.arrays of the lists.

        return DCs

def save_andor_load_arrays(endog, exog, true_params, save_arrays, load_old_arrays):
    if save_arrays:
        sp.save("endog.npy", endog)
        sp.save("exog.npy", exog)
        sp.save("true_params.npy", true_params)
    if load_old_arrays:
        endog = sp.load("endog.npy")
        exog = sp.load("exog.npy")
        true_params = sp.load("true_params.npy")
    return endog, exog, true_params

def save_andor_load_arrays(
        endog, exog, true_params, save_arrays, load_old_arrays):
    if save_arrays:
        sp.save('endog.npy', endog)
        sp.save('exog.npy', exog)
        sp.save('true_params.npy', true_params)
    if load_old_arrays:
        endog = sp.load('endog.npy')
        exog = sp.load('exog.npy')
        true_params = sp.load('true_params.npy')
    return endog, exog, true_params

	def execute(self, nprocesses=1):

		params = self.params
		boxshape = params['boxshape']
		boxunit = params['boxunit']
		resultf = params['hr'][0]
		if len(params['last']) != 0:
			resultf = resultf + params['last'][0]
		resultf = resultf + '-' + params['hr'][1]
		if len(params['last']) != 0:
			resultf = resultf + params['last'][1]
		
		FKPweight = params['FKPweight']
		in_root = params['input_root']
		out_root = params['output_root']
		mid = params['mid']
		fkpp = params['FKPpk']


		WindowF_fname = out_root+'WindowF_'+\
			str(boxshape[0])+'x'+str(boxshape[1])+'x'+\
			str(boxshape[2])+'x'+str(boxunit)+'_'+resultf
		kWindowF_fname = out_root+'k_WindowF_'+\
			str(boxshape[0])+'x'+str(boxshape[1])+'x'+\
			str(boxshape[2])+'x'+str(boxunit)+'_'+resultf

		print WindowF_fname

		try:
			WindowF = sp.load(WindowF_fname+'.npy')
			k = sp.load(kWindowF_fname+'.npy')
		except IOError:
			print '\tWindow Functin ReMake'
			WindowF, k = self.GetWindowFunctionData()

		non0 = WindowF.nonzero()
		sp.save(WindowF_fname, WindowF)
		sp.save(kWindowF_fname, k)

		#txtf = open(out_root+'window_for_idl.txt', 'w')
		#try:
		#	for i in range(len(WindowF)):
		#		if WindowF[i]==0: continue
		#		print >>txtf, '{0} {1}'.format(k[i], WindowF[i])
		#finally:
		#	txtf.close()

		return WindowF, k

def loadTFIDF(path):

    weight=sp.load('tfidf_weight.npy')
    fp=codecs.open('tfidf_words.txt','r','utf-8')
    words=json.load(fp)
    fp.close()    
    return words,weight

def make_video(image_dir, filename="vidout.avi", fixation_file=None):

    MPEG_FOURCC = 827148624
    vwriter = cv2.VideoWriter()

    if fixation_file is not None:
        fixations = sp.load(fixation_file)
        fixations[sp.isnan(fixations)] = -100
        fixations[abs(fixations) > 1000] = 1000
    else:
        fixations = []

    im_base_name = "cam1_frame_"
    im_extension = ".bmp"

    suc = vwriter.open(os.path.join(image_dir, filename), cv.CV_FOURCC('M', 'J', 'P', 'G'), 30, (640,480))

    if not suc:
        raise IOError("Failed to open movie")

    for frame_num in xrange(1000):
        im_name = "".join([im_base_name, str(frame_num), im_extension])
        im_path = os.path.join(image_dir, im_name)
        im = cv2.imread(im_path)
        if len(fixations) != 0:
            cv2.circle(im, tuple(fixations[frame_num]), 3, (255, 255, 255))
        vwriter.write(im)

    def from_file(fname):
        """Load model from a npz file"""

        params = dict(sc.load(fname).items())
        model = Model(fname, **params)
        if "seed" in params:
            model.set_seed(model["seed"])
        return model

def test_brown_clustering():
    fname = "test-data/text-1e2.npz"
    F = sc.load( fname )
    C, D = F['C'], F['D']
    k = 100
    W = 1000

    bc = BrownClusteringAlgorithm( C )
    bc.run( k, W )

def train(nn_name = '12-net',k = 12):
    """
    Fucntion for traning 12-net with testing on part of data
    using cross validation
    """
    suff = str(k)
    if nn_name.find('calib') > 0:
        X_data_name = 'train_data_icalib_'+ suff +  '.npy'
        y_data_name = 'labels_icalib_'+ suff + '.npy'
    else:
        X_data_name = 'train_data_'+ suff +  '.npy'
        y_data_name = 'labels_'+ suff + '.npy'
    
    rates12 = sp.hstack((0.05 * sp.ones(25,dtype=sp.float32),0.005*sp.ones(15,dtype=sp.float32),0.0005*sp.ones(10,dtype=sp.float32)))
    rates24 = sp.hstack((0.01 * sp.ones(25,dtype=sp.float32),0.0001*sp.ones(15,dtype=sp.float32)))
    rates48 = sp.hstack ([0.05 * sp.ones(15,dtype=sp.float32),0.005*sp.ones(10,dtype=sp.float32) ])
    if nn_name == '24-net':
        nn = Cnnl(nn_name = nn_name,l_rates=rates24,subnet=Cnnl(nn_name = '12-net',l_rates=rates12).load_model(
            '12-net_lasagne_.pickle'))
    elif nn_name == '48-net':    
        nn = Cnnl(nn_name = nn_name,l_rates=rates48,subnet=Cnnl(nn_name = '24-net',l_rates=rates24,subnet=Cnnl(nn_name = '12-net',l_rates=rates12).load_model(
            '12-net_lasagne_.pickle')).load_model('24-net_lasagne_.pickle'))     
    else:
        nn = Cnnl(nn_name = nn_name,l_rates=rates12)
    if not os.path.exists(nn_name   + '_lasagne_.pickle'): 
        if nn_name.find('calib') > 0:
            ds.get_train_wider_calib_data(k=k)  
        else:
            ds.get_train_data(k=k)
    X,y = sp.load(X_data_name),sp.load(y_data_name)
        
    X_train,y_train = X,y
    
    if not os.path.exists(nn_name   + '_lasagne_.pickle'):
        if nn_name == '24-net':
            X_sub_train12 = sp.load('train_data_12.npy')
            nn.fit(X = X_train,y = y_train,X12 = X_sub_train12)
        elif nn_name == '48-net':
            X_sub_train12 = sp.load('train_data_12.npy')
            X_sub_train24 = sp.load('train_data_24.npy')
            nn.fit(X = X_train,y = y_train,X12 = X_sub_train12,X24 = X_sub_train24)
        else:
            nn.fit(X = X_train,y = y_train)
        nn.save_model(nn_name   + '_lasagne_.pickle')

def draw_raw_signal_around_genes(raw_signals, out_png, windowsize=20000):
    """draw the raw signals as computed by make_raw_signal_around_genes"""
    gene_expr = filter(lambda f: 'gene_expr' in f, raw_signals)
    reads = filter(lambda f: 'gene_expr' not in f and 'matched_size' not in f, raw_signals)
    pyplot.figure()
    f, plots = pyplot.subplots(1, len(reads)+1, sharex=False, sharey=True, squeeze=False)
    #sig_min = reduce(min, map(min, map(sp.load, reads)))
    #sig_max = reduce(max, map(max, map(sp.load, reads)))
    for i, read_sig in enumerate(reads):
        #plots[i+1].imshow(sp.load(read_sig), interpolation='nearest', vmin=sig_min, vmax=sig_max)
        plots[0, i+1].imshow(sp.ma.filled(sp.load(read_sig), fill_value=0).T, interpolation='nearest', aspect=.05)
        plots[0, i+1].text(0,0,read_sig.split('gene.expression.')[1].split('.')[0], rotation=30, verticalalignment='bottom')
    gexpr_ma = sp.load(gene_expr[0]).astype(float)
    plots[0, 0].imshow(sp.ma.filled(gexpr_ma.reshape(1,gexpr_ma.shape[0]), fill_value=0).T, interpolation='nearest', aspect=.002)
    #yticks(sp.arange())
    shape = sp.load(read_sig).shape
    pyplot.xticks(sp.arange(0, shape[0] + shape[0]/4, shape[0] / 4), sp.arange(-windowsize/2, windowsize/2 + windowsize/4, windowsize/4))
    f.savefig(out_png)
    pyplot.close('all')

    def from_file( fname ):
        """Load model from a HDF file"""

        if not fname.endswith(".npz"):
            fname += ".npz"
        params = dict( sc.load( fname ).items() )
        model = Model( fname, **params )
        if "seed" in params:
            model.set_seed( model.get_parameter("seed") )
        return model

def read_file(name):
    fname = fname_template %name
    if os.path.exists(fname+'_x.npy') and os.path.exists(fname+'_y.npy'):
        xs = scipy.load(fname+'_x.npy')
        ys = scipy.load(fname+'_y.npy')
        return xs, ys
    elif os.path.exists(fname):
        with open(fname) as fh:
            lines = fh.readlines()
        ns = len(lines)
        x, y = numpy.ndarray(ns), numpy.ndarray(ns, dtype=complex)
        for i, l in enumerate(lines):
            xr, yr = l.split('\t')
            x[i] = eval(xr)
            y[i] = eval(yr)
        return x, y
    else:
        print >>sys.stderr, 'Manca il file %s' %(fname_template %name,)
        #sys.exit(1)
        return None, None

def loadMSER_npy(fn=nn_data_sets.NN_DATA_MSER,datadir=NN_DATA_DIR):
    '''
    As a shortcut to loading the MSER data set from the 1000's of files found in the
    ukbench_extract folder, one should call loadMSER() once, and save the resulting
    numpy array to a single file. This function assumes you have done so, and will
    load the MSER data from the specified numpy file.
    @Note: This function really doesn't do anything but put comments around the
    use of numpy.load(...). Use numpy.save( filename, M) to create the saved file
    in the first place.
    '''
    return scipy.load( os.path.join(datadir, fn) )

def reconstruct_target(target_file,base_prefix,regul = None):
	"""
		Reconstruct the target in 'target_file' using constrained, 
		and optionally regularized, least square optimisation.
		
		arguments :
			target_file : file contaiing the target to fit
			base_prefix : prefix for the files of the base.
	"""
	
	vlist = read_vertex_list(base_prefix+'_vertices.dat')
	t = read_target(target_file,vlist)
	U = load(base_prefix+"_U.npy").astype('float')
	S = load(base_prefix+"_S.npy").astype('float')
	V = load(base_prefix+"_V.npy").astype('float')

	ntargets,dim = V.shape
	nvert = len(t)
	pt = dot(U.T,t.reshape(nvert*3,1))
	pbase = S[:dim].reshape(dim,1)*V.T
	A = param('A',value = matrix(pbase))
	b = param('b',value = matrix(pt))
	x = optvar('x',ntargets)

	if regul is None : prob = problem(minimize(norm2(A*x-b)),[x>=0.,x<=1.])
	else : prob = problem(minimize(norm2(A*x-b) + regul * norm1(x)),[x>=0.,x<=1.])
	
	prob.solve()
	
	targ_names_file = base_prefix+"_names.txt"
	with open(targ_names_file) as f :
		tnames = [line.strip() for line in f.readlines() ]
	tnames.sort()
	
	base,ext = os.path.splitext(target_file)
	bs_name = base+".bs"
	with open(bs_name,"w") as f :
		for tn,v in zip(tnames,x.value):
			if v >= 1e-3 : f.write("%s %0.3f\n"%(tn,v))