The Experts below are selected from a list of 66735 Experts worldwide ranked by ideXlab platform
Carlos Silva - One of the best experts on this subject based on the ideXlab platform.
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restricted boltzmann machine to determine the input weights for extreme learning machines
Expert Systems With Applications, 2018Co-Authors: Andre G C Pacheco, Renato A Krohling, Carlos SilvaAbstract:Abstract The Extreme Learning Machine (Elm) is a single-hidden layer feedforward neural network (SLFN) learning algorithm that can learn effectively and quickly. The Elm training phase assigns the input weights and bias randomly and does not change them in the whole process. Although the network works well, the random weights in the input layer may affect the algorithm performance. Therefore, we propose a new approach to determine the input weights and bias for the Elm using the restricted Boltzmann machine (RBM), which we call RBM-Elm. We compare our new approach to the well-known Elm-AE and to the Elm-RO, a state of the art algorithm to select the input weights for the Elm. The experimental results show that the RBM-Elm achieves a better performance than the Elm and outperforms the Elm-AE and Elm-RO.
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restricted boltzmann machine to determine the input weights for extreme learning machines
Expert Systems With Applications, 2018Co-Authors: Andre G C Pacheco, Renato A Krohling, Carlos SilvaAbstract:Abstract The Extreme Learning Machine (Elm) is a single-hidden layer feedforward neural network (SLFN) learning algorithm that can learn effectively and quickly. The Elm training phase assigns the input weights and bias randomly and does not change them in the whole process. Although the network works well, the random weights in the input layer may affect the algorithm performance. Therefore, we propose a new approach to determine the input weights and bias for the Elm using the restricted Boltzmann machine (RBM), which we call RBM-Elm. We compare our new approach to the well-known Elm-AE and to the Elm-RO, a state of the art algorithm to select the input weights for the Elm. The experimental results show that the RBM-Elm achieves a better performance than the Elm and outperforms the Elm-AE and Elm-RO.
Mihaela C Voicu - One of the best experts on this subject based on the ideXlab platform.
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responses of ectomycorrhizal american Elm ulmus americana seedlings to salinity and soil compaction
Plant and Soil, 2008Co-Authors: Monica Calvo Polanco, Janusz J. Zwiazek, Mihaela C VoicuAbstract:American Elm (Ulmus americana) seedlings were either non-inoculated or inoculated with Hebeloma crustuliniforme, Laccaria bicolor and a mixture of the two fungi to study the effects of ectomycorrhizal associations on seedling responses to soil compaction and salinity. The seedlings were grown in the greenhouse in pots containing non-compacted (0.4 g cm−3 bulk density) and compacted (0.6 g cm−3 bulk density) soil and subjected to 60 mM NaCl or 0 mM NaCl (control) treatments for 3 weeks. All three fungal inocula had similar effects on the responses of Elm seedlings to soil compaction and salt treatment. In non-compacted soil, ectomycorrhizal fungi reduced plant dry weights, root hydraulic conductance, but did not affect leaf hydraulic conductance and net photosynthesis. When treated with 60 mM NaCl, ectomycorrhizal seedlings had several-fold lower leaf concentrations of Na+ compared with the non-inoculated plants. Soil compaction reduced Na+ leaf concentrations in non-ectomycorrhizal plants and decreased dry weights, gas exchange and root hydraulic conductance. However, in ectomycorrhizal plants, soil compaction had little effect on the leaf Na+ concentrations and on other measured growth and physiological parameters. Our results demonstrated that ECM associations could be highly beneficial to plants growing in sites with compacted soil such as urban areas.
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responses of ectomycorrhizal american Elm ulmus americana seedlings to salinity and soil compaction
Plant and Soil, 2008Co-Authors: Monica Calvo Polanco, Janusz J. Zwiazek, Mihaela C VoicuAbstract:American Elm (Ulmus americana) seedlings were either non-inoculated or inoculated with Hebeloma crustuliniforme, Laccaria bicolor and a mixture of the two fungi to study the effects of ectomycorrhizal associations on seedling responses to soil compaction and salinity. The seedlings were grown in the greenhouse in pots containing non-compacted (0.4 g cm−3 bulk density) and compacted (0.6 g cm−3 bulk density) soil and subjected to 60 mM NaCl or 0 mM NaCl (control) treatments for 3 weeks. All three fungal inocula had similar effects on the responses of Elm seedlings to soil compaction and salt treatment. In non-compacted soil, ectomycorrhizal fungi reduced plant dry weights, root hydraulic conductance, but did not affect leaf hydraulic conductance and net photosynthesis. When treated with 60 mM NaCl, ectomycorrhizal seedlings had several-fold lower leaf concentrations of Na+ compared with the non-inoculated plants. Soil compaction reduced Na+ leaf concentrations in non-ectomycorrhizal plants and decreased dry weights, gas exchange and root hydraulic conductance. However, in ectomycorrhizal plants, soil compaction had little effect on the leaf Na+ concentrations and on other measured growth and physiological parameters. Our results demonstrated that ECM associations could be highly beneficial to plants growing in sites with compacted soil such as urban areas.
Janusz J. Zwiazek - One of the best experts on this subject based on the ideXlab platform.
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effects of ph on nacl tolerance of american Elm ulmus americana seedlings inoculated with hebeloma crustuliniforme and laccaria bicolor
Acta Physiologiae Plantarum, 2009Co-Authors: Monica Calvopolanco, Melanie D. Jones, Janusz J. ZwiazekAbstract:In the present study, we investigated the effects of pH treatments on NaCl tolerance in mycorrhizal and non-mycorrhizal American Elm. American Elm (Ulmus americana) seedlings were inoculated with Hebeloma crustuliniforme, Laccaria bicolor or with both mycorrhizal fungi and subsequently subjected to different pH solutions (pH 3, 6 and 9) containing 0 mM (control) and 60 mM NaCl for 4 weeks. Inoculation with the mycorrhizal fungi did not have a large effect on seedling dry weights when the pH and NaCl treatments were considered independently. However, when the inoculated seedlings were treated with 60 mM NaCl at pH 3 or 6, shoot to root ratios and root hydraulic conductivity were higher compared with non-inoculated plants, likely reflecting changes in seedling water flow properties. At pH 6, transpiration rates were about twofold lower in non-inoculated plants treated with NaCl compared with non-treated controls. For NaCl-treated H. crustuliniforme- and L. bicolor-inoculated plants, the greatest reduction of transpiration rates was at pH 9. Treatment with 60 mM NaCl reduced leaf chlorophyll concentrations more in non-inoculated compared with inoculated plants, with the greatest, twofold, decrease occurring at pH 6. At pH 3, root Na concentrations were higher in inoculated than non-inoculated seedlings; however, there was no effect of inoculation on root Na concentrations at pH 6 and 9. Contrary to the roots, the leaves of inoculated plants had lower Na concentrations at pH 6 and 9, but not at pH 3. The results point to an interaction between ECM fungi and root zone pH for salt tolerance of American Elm.
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effects of ph on nacl tolerance of american Elm ulmus americana seedlings inoculated with hebeloma crustuliniforme and laccaria bicolor
Acta Physiologiae Plantarum, 2009Co-Authors: Monica Calvopolanco, Melanie D. Jones, Janusz J. ZwiazekAbstract:In the present study, we investigated the effects of pH treatments on NaCl tolerance in mycorrhizal and non-mycorrhizal American Elm. American Elm (Ulmus americana) seedlings were inoculated with Hebeloma crustuliniforme, Laccaria bicolor or with both mycorrhizal fungi and subsequently subjected to different pH solutions (pH 3, 6 and 9) containing 0 mM (control) and 60 mM NaCl for 4 weeks. Inoculation with the mycorrhizal fungi did not have a large effect on seedling dry weights when the pH and NaCl treatments were considered independently. However, when the inoculated seedlings were treated with 60 mM NaCl at pH 3 or 6, shoot to root ratios and root hydraulic conductivity were higher compared with non-inoculated plants, likely reflecting changes in seedling water flow properties. At pH 6, transpiration rates were about twofold lower in non-inoculated plants treated with NaCl compared with non-treated controls. For NaCl-treated H. crustuliniforme- and L. bicolor-inoculated plants, the greatest reduction of transpiration rates was at pH 9. Treatment with 60 mM NaCl reduced leaf chlorophyll concentrations more in non-inoculated compared with inoculated plants, with the greatest, twofold, decrease occurring at pH 6. At pH 3, root Na concentrations were higher in inoculated than non-inoculated seedlings; however, there was no effect of inoculation on root Na concentrations at pH 6 and 9. Contrary to the roots, the leaves of inoculated plants had lower Na concentrations at pH 6 and 9, but not at pH 3. The results point to an interaction between ECM fungi and root zone pH for salt tolerance of American Elm.
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responses of ectomycorrhizal american Elm ulmus americana seedlings to salinity and soil compaction
Plant and Soil, 2008Co-Authors: Monica Calvo Polanco, Janusz J. Zwiazek, Mihaela C VoicuAbstract:American Elm (Ulmus americana) seedlings were either non-inoculated or inoculated with Hebeloma crustuliniforme, Laccaria bicolor and a mixture of the two fungi to study the effects of ectomycorrhizal associations on seedling responses to soil compaction and salinity. The seedlings were grown in the greenhouse in pots containing non-compacted (0.4 g cm−3 bulk density) and compacted (0.6 g cm−3 bulk density) soil and subjected to 60 mM NaCl or 0 mM NaCl (control) treatments for 3 weeks. All three fungal inocula had similar effects on the responses of Elm seedlings to soil compaction and salt treatment. In non-compacted soil, ectomycorrhizal fungi reduced plant dry weights, root hydraulic conductance, but did not affect leaf hydraulic conductance and net photosynthesis. When treated with 60 mM NaCl, ectomycorrhizal seedlings had several-fold lower leaf concentrations of Na+ compared with the non-inoculated plants. Soil compaction reduced Na+ leaf concentrations in non-ectomycorrhizal plants and decreased dry weights, gas exchange and root hydraulic conductance. However, in ectomycorrhizal plants, soil compaction had little effect on the leaf Na+ concentrations and on other measured growth and physiological parameters. Our results demonstrated that ECM associations could be highly beneficial to plants growing in sites with compacted soil such as urban areas.
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responses of ectomycorrhizal american Elm ulmus americana seedlings to salinity and soil compaction
Plant and Soil, 2008Co-Authors: Monica Calvo Polanco, Janusz J. Zwiazek, Mihaela C VoicuAbstract:American Elm (Ulmus americana) seedlings were either non-inoculated or inoculated with Hebeloma crustuliniforme, Laccaria bicolor and a mixture of the two fungi to study the effects of ectomycorrhizal associations on seedling responses to soil compaction and salinity. The seedlings were grown in the greenhouse in pots containing non-compacted (0.4 g cm−3 bulk density) and compacted (0.6 g cm−3 bulk density) soil and subjected to 60 mM NaCl or 0 mM NaCl (control) treatments for 3 weeks. All three fungal inocula had similar effects on the responses of Elm seedlings to soil compaction and salt treatment. In non-compacted soil, ectomycorrhizal fungi reduced plant dry weights, root hydraulic conductance, but did not affect leaf hydraulic conductance and net photosynthesis. When treated with 60 mM NaCl, ectomycorrhizal seedlings had several-fold lower leaf concentrations of Na+ compared with the non-inoculated plants. Soil compaction reduced Na+ leaf concentrations in non-ectomycorrhizal plants and decreased dry weights, gas exchange and root hydraulic conductance. However, in ectomycorrhizal plants, soil compaction had little effect on the leaf Na+ concentrations and on other measured growth and physiological parameters. Our results demonstrated that ECM associations could be highly beneficial to plants growing in sites with compacted soil such as urban areas.
Andre G C Pacheco - One of the best experts on this subject based on the ideXlab platform.
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restricted boltzmann machine to determine the input weights for extreme learning machines
Expert Systems With Applications, 2018Co-Authors: Andre G C Pacheco, Renato A Krohling, Carlos SilvaAbstract:Abstract The Extreme Learning Machine (Elm) is a single-hidden layer feedforward neural network (SLFN) learning algorithm that can learn effectively and quickly. The Elm training phase assigns the input weights and bias randomly and does not change them in the whole process. Although the network works well, the random weights in the input layer may affect the algorithm performance. Therefore, we propose a new approach to determine the input weights and bias for the Elm using the restricted Boltzmann machine (RBM), which we call RBM-Elm. We compare our new approach to the well-known Elm-AE and to the Elm-RO, a state of the art algorithm to select the input weights for the Elm. The experimental results show that the RBM-Elm achieves a better performance than the Elm and outperforms the Elm-AE and Elm-RO.
-
restricted boltzmann machine to determine the input weights for extreme learning machines
Expert Systems With Applications, 2018Co-Authors: Andre G C Pacheco, Renato A Krohling, Carlos SilvaAbstract:Abstract The Extreme Learning Machine (Elm) is a single-hidden layer feedforward neural network (SLFN) learning algorithm that can learn effectively and quickly. The Elm training phase assigns the input weights and bias randomly and does not change them in the whole process. Although the network works well, the random weights in the input layer may affect the algorithm performance. Therefore, we propose a new approach to determine the input weights and bias for the Elm using the restricted Boltzmann machine (RBM), which we call RBM-Elm. We compare our new approach to the well-known Elm-AE and to the Elm-RO, a state of the art algorithm to select the input weights for the Elm. The experimental results show that the RBM-Elm achieves a better performance than the Elm and outperforms the Elm-AE and Elm-RO.
Monica Calvo Polanco - One of the best experts on this subject based on the ideXlab platform.
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responses of ectomycorrhizal american Elm ulmus americana seedlings to salinity and soil compaction
Plant and Soil, 2008Co-Authors: Monica Calvo Polanco, Janusz J. Zwiazek, Mihaela C VoicuAbstract:American Elm (Ulmus americana) seedlings were either non-inoculated or inoculated with Hebeloma crustuliniforme, Laccaria bicolor and a mixture of the two fungi to study the effects of ectomycorrhizal associations on seedling responses to soil compaction and salinity. The seedlings were grown in the greenhouse in pots containing non-compacted (0.4 g cm−3 bulk density) and compacted (0.6 g cm−3 bulk density) soil and subjected to 60 mM NaCl or 0 mM NaCl (control) treatments for 3 weeks. All three fungal inocula had similar effects on the responses of Elm seedlings to soil compaction and salt treatment. In non-compacted soil, ectomycorrhizal fungi reduced plant dry weights, root hydraulic conductance, but did not affect leaf hydraulic conductance and net photosynthesis. When treated with 60 mM NaCl, ectomycorrhizal seedlings had several-fold lower leaf concentrations of Na+ compared with the non-inoculated plants. Soil compaction reduced Na+ leaf concentrations in non-ectomycorrhizal plants and decreased dry weights, gas exchange and root hydraulic conductance. However, in ectomycorrhizal plants, soil compaction had little effect on the leaf Na+ concentrations and on other measured growth and physiological parameters. Our results demonstrated that ECM associations could be highly beneficial to plants growing in sites with compacted soil such as urban areas.
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responses of ectomycorrhizal american Elm ulmus americana seedlings to salinity and soil compaction
Plant and Soil, 2008Co-Authors: Monica Calvo Polanco, Janusz J. Zwiazek, Mihaela C VoicuAbstract:American Elm (Ulmus americana) seedlings were either non-inoculated or inoculated with Hebeloma crustuliniforme, Laccaria bicolor and a mixture of the two fungi to study the effects of ectomycorrhizal associations on seedling responses to soil compaction and salinity. The seedlings were grown in the greenhouse in pots containing non-compacted (0.4 g cm−3 bulk density) and compacted (0.6 g cm−3 bulk density) soil and subjected to 60 mM NaCl or 0 mM NaCl (control) treatments for 3 weeks. All three fungal inocula had similar effects on the responses of Elm seedlings to soil compaction and salt treatment. In non-compacted soil, ectomycorrhizal fungi reduced plant dry weights, root hydraulic conductance, but did not affect leaf hydraulic conductance and net photosynthesis. When treated with 60 mM NaCl, ectomycorrhizal seedlings had several-fold lower leaf concentrations of Na+ compared with the non-inoculated plants. Soil compaction reduced Na+ leaf concentrations in non-ectomycorrhizal plants and decreased dry weights, gas exchange and root hydraulic conductance. However, in ectomycorrhizal plants, soil compaction had little effect on the leaf Na+ concentrations and on other measured growth and physiological parameters. Our results demonstrated that ECM associations could be highly beneficial to plants growing in sites with compacted soil such as urban areas.