355 research outputs found
3-Bromo-1-(3-chloropyridin-2-yl)-N-(4-ethoxyphenyl)-1H-pyrazole-5-carboxamide
In the title compound, C17H14BrClN4O2, the pyrazole ring is almost coplanar with the benzene ring [dihedral angle = 0.5 (2)°], whereas the pyrazole ring is close to perpendicular to the 3-chloropyridine ring [dihedral angle = 73.7 (2)°]. An intramolecular C—H⋯O hydrogen bond occurs. The dominant interaction in the crystal packing is an N—H⋯N hydrogen bond, which generates a chain along the c axis. Weak intermolecular C—H⋯O and C—H⋯N contacts are also observe
Methyl 3,4-bis(cyclopropylmethoxy)benzoate
The title compound, C16H20O4, was obtained unintentionally as the byproduct of an attempted synthesis of methyl 3-(cyclopropylmethoxy)-4-hydroxybenzoate. In the crystal, the molecules are linked by intermolecular C—H⋯O interactions
Methyl 3-(cyclopropylmethoxy)-4-hydroxybenzoate. Corrigendum
Corrigendum to Acta Cryst. (2010), E66, o2004
HoMM: Higher-order Moment Matching for Unsupervised Domain Adaptation
Minimizing the discrepancy of feature distributions between different domains
is one of the most promising directions in unsupervised domain adaptation. From
the perspective of distribution matching, most existing discrepancy-based
methods are designed to match the second-order or lower statistics, which
however, have limited expression of statistical characteristic for non-Gaussian
distributions. In this work, we explore the benefits of using higher-order
statistics (mainly refer to third-order and fourth-order statistics) for domain
matching. We propose a Higher-order Moment Matching (HoMM) method, and further
extend the HoMM into reproducing kernel Hilbert spaces (RKHS). In particular,
our proposed HoMM can perform arbitrary-order moment tensor matching, we show
that the first-order HoMM is equivalent to Maximum Mean Discrepancy (MMD) and
the second-order HoMM is equivalent to Correlation Alignment (CORAL). Moreover,
the third-order and the fourth-order moment tensor matching are expected to
perform comprehensive domain alignment as higher-order statistics can
approximate more complex, non-Gaussian distributions. Besides, we also exploit
the pseudo-labeled target samples to learn discriminative representations in
the target domain, which further improves the transfer performance. Extensive
experiments are conducted, showing that our proposed HoMM consistently
outperforms the existing moment matching methods by a large margin. Codes are
available at \url{https://github.com/chenchao666/HoMM-Master}Comment: Accept by AAAI-2020, codes are available at
https://github.com/chenchao666/HoMM-Maste
Methyl 3-(cyclopropylmethoxy)-4-hydroxybenzoate
In the title compound, C12H14O4, the dihedral angle between the benzene ring and the cyclopropyl ring is 60.3 (4)°. In the crystal structure, molecules are linked by intermolecular O—H⋯O hydrogen bonds into chains running parallel to [101]
Lasiodiplodia sp. ME4-2, an endophytic fungus from the floral parts of Viscum coloratum, produces indole-3-carboxylic acid and other aromatic metabolites
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