Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: WSOD^2: Learning Bottom-up and Top-down Objectness Distillation for
  Weakly-supervised Object Detection   We study on weakly-supervised object detection (WSOD) which plays a vital
role in relieving human involvement from object-level annotations. Predominant
works integrate region proposal mechanisms with convolutional neural networks
(CNN). Although CNN is proficient in extracting discriminative local features,
grand challenges still exist to measure the likelihood of a bounding box
containing a complete object (i.e., "objectness"). In this paper, we propose a
novel WSOD framework with Objectness Distillation (i.e., WSOD^2) by designing a
tailored training mechanism for weakly-supervised object detection. Multiple
regression targets are specifically determined by jointly considering bottom-up
(BU) and top-down (TD) objectness from low-level measurement and CNN
confidences with an adaptive linear combination. As bounding box regression can
facilitate a region proposal learning to approach its regression target with
high objectness during training, deep objectness representation learned from
bottom-up evidences can be gradually distilled into CNN by optimization. We
explore different adaptive training curves for BU/TD objectness, and show that
the proposed WSOD^2 can achieve state-of-the-art results.

27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio