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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_LEARNING_IMPL_MODEL_H_
#define MEDIA_LEARNING_IMPL_MODEL_H_
#include "base/callback.h"
#include "base/component_export.h"
#include "media/learning/common/labelled_example.h"
#include "media/learning/common/target_histogram.h"
namespace media {
namespace learning {
// One trained model, useful for making predictions.
// TODO(liberato): Provide an API for incremental update, for those models that
// can support it.
class COMPONENT_EXPORT(LEARNING_IMPL) Model {
public:
// Callback for asynchronous predictions.
using PredictionCB = base::OnceCallback<void(TargetHistogram predicted)>;
virtual ~Model() = default;
virtual TargetHistogram PredictDistribution(
const FeatureVector& instance) = 0;
// TODO(liberato): Consider adding an async prediction helper.
};
} // namespace learning
} // namespace media
#endif // MEDIA_LEARNING_IMPL_MODEL_H_
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