2019-03-24 17:22:43 +00:00
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< h1 > Source code for torchreid.utils.avgmeter< / h1 > < div class = "highlight" > < pre >
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< span > < / span > < span class = "kn" > from< / span > < span class = "nn" > __future__< / span > < span class = "k" > import< / span > < span class = "n" > division< / span > < span class = "p" > ,< / span > < span class = "n" > absolute_import< / span >
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< span class = "kn" > from< / span > < span class = "nn" > collections< / span > < span class = "k" > import< / span > < span class = "n" > defaultdict< / span >
< span class = "kn" > import< / span > < span class = "nn" > torch< / span >
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< span class = "n" > __all__< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s1" > ' AverageMeter' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' MetricMeter' < / span > < span class = "p" > ]< / span >
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< div class = "viewcode-block" id = "AverageMeter" > < a class = "viewcode-back" href = "../../../pkg/utils.html#torchreid.utils.avgmeter.AverageMeter" > [docs]< / a > < span class = "k" > class< / span > < span class = "nc" > AverageMeter< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " Computes and stores the average and current value.< / span >
< span class = "sd" > Examples::< / span >
< span class = "sd" > > > > # Initialize a meter to record loss< / span >
< span class = "sd" > > > > losses = AverageMeter()< / span >
< span class = "sd" > > > > # Update meter after every minibatch update< / span >
< span class = "sd" > > > > losses.update(loss_value, batch_size)< / span >
< span class = "sd" > " " " < / span >
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< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > reset< / span > < span class = "p" > ()< / span >
< span class = "k" > def< / span > < span class = "nf" > reset< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > val< / span > < span class = "o" > =< / span > < span class = "mi" > 0< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > avg< / span > < span class = "o" > =< / span > < span class = "mi" > 0< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > sum< / span > < span class = "o" > =< / span > < span class = "mi" > 0< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > count< / span > < span class = "o" > =< / span > < span class = "mi" > 0< / span >
< span class = "k" > def< / span > < span class = "nf" > update< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > val< / span > < span class = "p" > ,< / span > < span class = "n" > n< / span > < span class = "o" > =< / span > < span class = "mi" > 1< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > val< / span > < span class = "o" > =< / span > < span class = "n" > val< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > sum< / span > < span class = "o" > +=< / span > < span class = "n" > val< / span > < span class = "o" > *< / span > < span class = "n" > n< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > count< / span > < span class = "o" > +=< / span > < span class = "n" > n< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > avg< / span > < span class = "o" > =< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > sum< / span > < span class = "o" > /< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > count< / span > < / div >
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< div class = "viewcode-block" id = "MetricMeter" > < a class = "viewcode-back" href = "../../../pkg/utils.html#torchreid.utils.avgmeter.MetricMeter" > [docs]< / a > < span class = "k" > class< / span > < span class = "nc" > MetricMeter< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " A collection of metrics.< / span >
< span class = "sd" > Source: https://github.com/KaiyangZhou/Dassl.pytorch< / span >
< span class = "sd" > Examples::< / span >
< span class = "sd" > > > > # 1. Create an instance of MetricMeter< / span >
< span class = "sd" > > > > metric = MetricMeter()< / span >
< span class = "sd" > > > > # 2. Update using a dictionary as input< / span >
< span class = "sd" > > > > input_dict = {' loss_1' : value_1, ' loss_2' : value_2}< / span >
< span class = "sd" > > > > metric.update(input_dict)< / span >
< span class = "sd" > > > > # 3. Convert to string and print< / span >
< span class = "sd" > > > > print(str(metric))< / span >
< span class = "sd" > " " " < / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > delimiter< / span > < span class = "o" > =< / span > < span class = "s1" > ' < / span > < span class = "se" > \t< / span > < span class = "s1" > ' < / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > meters< / span > < span class = "o" > =< / span > < span class = "n" > defaultdict< / span > < span class = "p" > (< / span > < span class = "n" > AverageMeter< / span > < span class = "p" > )< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > delimiter< / span > < span class = "o" > =< / span > < span class = "n" > delimiter< / span >
< span class = "k" > def< / span > < span class = "nf" > update< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > input_dict< / span > < span class = "p" > ):< / span >
< span class = "k" > if< / span > < span class = "n" > input_dict< / span > < span class = "ow" > is< / span > < span class = "kc" > None< / span > < span class = "p" > :< / span >
< span class = "k" > return< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "nb" > isinstance< / span > < span class = "p" > (< / span > < span class = "n" > input_dict< / span > < span class = "p" > ,< / span > < span class = "nb" > dict< / span > < span class = "p" > ):< / span >
< span class = "k" > raise< / span > < span class = "ne" > TypeError< / span > < span class = "p" > (< / span >
< span class = "s1" > ' Input to MetricMeter.update() must be a dictionary' < / span >
< span class = "p" > )< / span >
< span class = "k" > for< / span > < span class = "n" > k< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "ow" > in< / span > < span class = "n" > input_dict< / span > < span class = "o" > .< / span > < span class = "n" > items< / span > < span class = "p" > ():< / span >
< span class = "k" > if< / span > < span class = "nb" > isinstance< / span > < span class = "p" > (< / span > < span class = "n" > v< / span > < span class = "p" > ,< / span > < span class = "n" > torch< / span > < span class = "o" > .< / span > < span class = "n" > Tensor< / span > < span class = "p" > ):< / span >
< span class = "n" > v< / span > < span class = "o" > =< / span > < span class = "n" > v< / span > < span class = "o" > .< / span > < span class = "n" > item< / span > < span class = "p" > ()< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > meters< / span > < span class = "p" > [< / span > < span class = "n" > k< / span > < span class = "p" > ]< / span > < span class = "o" > .< / span > < span class = "n" > update< / span > < span class = "p" > (< / span > < span class = "n" > v< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > __str__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "n" > output_str< / span > < span class = "o" > =< / span > < span class = "p" > []< / span >
< span class = "k" > for< / span > < span class = "n" > name< / span > < span class = "p" > ,< / span > < span class = "n" > meter< / span > < span class = "ow" > in< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > meters< / span > < span class = "o" > .< / span > < span class = "n" > items< / span > < span class = "p" > ():< / span >
< span class = "n" > output_str< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span >
< span class = "s1" > ' < / span > < span class = "si" > {}< / span > < span class = "s1" > < / span > < span class = "si" > {:.4f}< / span > < span class = "s1" > (< / span > < span class = "si" > {:.4f}< / span > < span class = "s1" > )' < / span > < span class = "o" > .< / span > < span class = "n" > format< / span > < span class = "p" > (< / span > < span class = "n" > name< / span > < span class = "p" > ,< / span > < span class = "n" > meter< / span > < span class = "o" > .< / span > < span class = "n" > val< / span > < span class = "p" > ,< / span > < span class = "n" > meter< / span > < span class = "o" > .< / span > < span class = "n" > avg< / span > < span class = "p" > )< / span >
< span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > delimiter< / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > output_str< / span > < span class = "p" > )< / span > < / div >
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