@article {352,
	title = {Semi-Supervised Object Recognition Based on Connected Image Transformations},
	journal = {Expert Systems with Applications},
	volume = {40},
	year = {2013},
	month = {December},
	pages = {7069--7079},
	abstract = {We present a novel semi-supervised classifier model based on paths between unlabeled and labeled data through a sequence of local pattern transformations. A reliable measure of path-length is proposed that combines a local dissimilarity measure between consecutive patters along a path with a global, connectivity-based metric. We apply this model to problems of object recognition, for which we propose a practical classification algorithm based on sequences of "Connected Image Transformations" (CIT). Experimental results on four popular image benchmarks demonstrate how the proposed CIT classifier outperforms state-of-the-art semi-supervised techniques. The results are particularly significant when only a very small number of labeled patterns is available: the proposed algorithm obtains a generalization error of 4.57\% on the MNIST data set trained on 2000 randomly chosen patterns with only 10 labeled patterns per digit class.},
	issn = {0957-4174},
	doi = {10.1016/j.eswa.2013.06.029},
	author = {Van Vaerenbergh, Steven and Santamar{\'\i}a, Ignacio and Barbano, Paolo Emilio}
}
@conference {Icassp2011_Semisupervised,
	title = {Semi-Supervised Handwritten Digit Recognition Using Very Few Labeled Data},
	booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2011)},
	year = {2011},
	month = {May},
	address = {Prague, Czech Republic},
	author = {Van Vaerenbergh, Steven and Santamar{\'\i}a, Ignacio and Barbano, Paolo Emilio}
}
@conference {MLSP09_Clustering_Time_Varying_MIMO,
	title = {Path-Based Spectral Clustering for Decoding Fast Time-Varying {MIMO} Channels},
	booktitle = {2009 International Workshop on Machine Learning for Signal Processing (MLSP)},
	year = {2009},
	month = {September},
	address = {Grenoble, France},
	author = {Van Vaerenbergh, Steven and Santamar{\'\i}a, Ignacio and Barbano, Paolo Emilio and Ozertem, Umut and Erdogmus, Deniz}
}
