search for: aleksandrov

Displaying 20 results from an estimated 55 matches for "aleksandrov".

2016 Apr 26
2
Linear Regressions with constraint coefficients
Ok, and if I would just like to force my slope coefficients to be inside an interval, let's say, between 0 and 1? Is there a way in R to formulate such a constraint regression? Thanks in advance and kind regards, Aljosa Aljosa Aleksandrovic, FRM, CAIA Quantitative Analyst - Convertibles aljosa.aleksandrovic at man.com Tel +41 55 417 7603 Man Investments (CH) AG Huobstrasse 3 | 8808 Pf?ffikon SZ | Switzerland -----Original Message----- From: Bert Gunter [mailto:bgunter.4567 at gmail.com] Sent: Dienstag, 26. April 2016 16:51 To: A...
2016 Apr 26
5
Linear Regressions with constraint coefficients
...between 0 and 1. Further, if possible, the slope coefficients should add up to 1. Is there an elegant and not too complicated way to do such a constraint regression estimation in R? I would very much appreciate if you could help me with my issue? Thanks a lot in advance and kind regards, Aljosa Aleksandrovic Aljosa Aleksandrovic, FRM, CAIA Quantitative Analyst - Convertibles aljosa.aleksandrovic at man.com Tel +41 55 417 7603 Man Investments (CH) AG Huobstrasse 3 | 8808 Pf?ffikon SZ | Switzerland -----Original Message----- From: Kevin E. Thorpe [mailto:kevin.thorpe at utoronto.ca] Sent: Dienst...
2016 Apr 26
1
Linear Regressions with constraint coefficients
...help you formulate your problem appropriately. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Apr 26, 2016 at 5:39 AM, Aleksandrovic, Aljosa (Pfaeffikon) <Aljosa.Aleksandrovic at man.com> wrote: > Hi all, > > I hope you are doing well? > > I?m currently using the lm() function from the package stats to fit linear multifactor regressions. > > Unfortunately, I didn?t yet find a way to fit linear multif...
2016 Apr 26
0
Linear Regressions with constraint coefficients
...ut I don't know if they fit your situation. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Apr 26, 2016 at 8:29 AM, Aleksandrovic, Aljosa (Pfaeffikon) <Aljosa.Aleksandrovic at man.com> wrote: > Ok, and if I would just like to force my slope coefficients to be inside an interval, let's say, between 0 and 1? Is there a way in R to formulate such a constraint regression? > > Thanks in advance and kind regard...
2016 Apr 28
2
Linear Regressions with constraint coefficients
...ent (e.g. Using a 4 factor model with b1, b2, b3 and b4, I tried start = list(b1 = 0.5, b2 = 0.5, b3 = 0.5, b4 = 0.5))? I also tried other starting values ... Hence, the outputs are very sensitive to that start argument? Thanks a lot for your answer in advance! Kind regards, Aljosa Aljosa Aleksandrovic, FRM, CAIA Quantitative Analyst - Convertibles aljosa.aleksandrovic at man.com Tel +41 55 417 76 03 Man Investments (CH) AG Huobstrasse 3 | 8808 Pf?ffikon SZ | Switzerland -----Original Message----- From: Gabor Grothendieck [mailto:ggrothendieck at gmail.com] Sent: Dienstag, 26. April 2016 17:...
2016 Apr 28
0
Linear Regressions with constraint coefficients
The nls2 package can be used to get starting values. On Thu, Apr 28, 2016 at 8:42 AM, Aleksandrovic, Aljosa (Pfaeffikon) <Aljosa.Aleksandrovic at man.com> wrote: > Hi Gabor, > > Thanks a lot for your help! > > I tried to implement your nonlinear least squares solver on my data set. I was just wondering about the argument start. If I would like to force all my coefficients t...
2016 Apr 26
0
Linear Regressions with constraint coefficients
...start = list(b1 = 1, b2 = 2, b3 = 3)) giving the following non-negative coefficients which sum to 1 that are reasonably close to the true values of 0.2, 0.3 and 0.5: > fm$coefficients / sum(fm$coefficients) b1 b2 b3 0.18463 0.27887 0.53650 On Tue, Apr 26, 2016 at 8:39 AM, Aleksandrovic, Aljosa (Pfaeffikon) <Aljosa.Aleksandrovic at man.com> wrote: > Hi all, > > I hope you are doing well? > > I?m currently using the lm() function from the package stats to fit linear multifactor regressions. > > Unfortunately, I didn?t yet find a way to fit linear multif...
2016 Feb 02
4
[PATCH net-next] virtio_net: add ethtool support for set and get of settings
From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> This patch allows the user to set and retrieve speed and duplex of the virtio_net device via ethtool. Having this functionality is very helpful for simulating different environments and also enables the virtio_net device to participate in operations where pro...
2016 Feb 02
4
[PATCH net-next] virtio_net: add ethtool support for set and get of settings
From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> This patch allows the user to set and retrieve speed and duplex of the virtio_net device via ethtool. Having this functionality is very helpful for simulating different environments and also enables the virtio_net device to participate in operations where pro...
2016 Jan 29
5
bonding (IEEE 802.3ad) not working with qemu/virtio
On 01/29/2016 10:45 PM, Jay Vosburgh wrote: > Nikolay Aleksandrov <nikolay at cumulusnetworks.com> wrote: > >> On 01/25/2016 05:24 PM, Bj?rnar Ness wrote: >>> As subject says, 802.3ad bonding is not working with virtio network model. >>> >>> The only errors I see is: >>> >>> No 802.3ad response from the...
2016 Jan 29
5
bonding (IEEE 802.3ad) not working with qemu/virtio
On 01/29/2016 10:45 PM, Jay Vosburgh wrote: > Nikolay Aleksandrov <nikolay at cumulusnetworks.com> wrote: > >> On 01/25/2016 05:24 PM, Bj?rnar Ness wrote: >>> As subject says, 802.3ad bonding is not working with virtio network model. >>> >>> The only errors I see is: >>> >>> No 802.3ad response from the...
2016 Feb 02
1
[PATCH net-next] virtio_net: add ethtool support for set and get of settings
On 02/02/2016 02:23 PM, Michael S. Tsirkin wrote: > On Tue, Feb 02, 2016 at 01:51:20PM +0100, Nikolay Aleksandrov wrote: >> From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> >> >> This patch allows the user to set and retrieve speed and duplex of the >> virtio_net device via ethtool. Having this functionality is very helpful >> for simulating different environments...
2016 Feb 02
1
[PATCH net-next] virtio_net: add ethtool support for set and get of settings
On 02/02/2016 02:23 PM, Michael S. Tsirkin wrote: > On Tue, Feb 02, 2016 at 01:51:20PM +0100, Nikolay Aleksandrov wrote: >> From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> >> >> This patch allows the user to set and retrieve speed and duplex of the >> virtio_net device via ethtool. Having this functionality is very helpful >> for simulating different environments...
2016 Jan 30
1
bonding (IEEE 802.3ad) not working with qemu/virtio
On 01/30/2016 07:59 AM, David Miller wrote: > From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> > Date: Fri, 29 Jan 2016 22:48:26 +0100 > >> On 01/29/2016 10:45 PM, Jay Vosburgh wrote: >>> Nikolay Aleksandrov <nikolay at cumulusnetworks.com> wrote: >>> >>>> On 01/25/2016 05:24 PM, Bj?rnar Ness wrote: >&...
2016 Jan 30
1
bonding (IEEE 802.3ad) not working with qemu/virtio
On 01/30/2016 07:59 AM, David Miller wrote: > From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> > Date: Fri, 29 Jan 2016 22:48:26 +0100 > >> On 01/29/2016 10:45 PM, Jay Vosburgh wrote: >>> Nikolay Aleksandrov <nikolay at cumulusnetworks.com> wrote: >>> >>>> On 01/25/2016 05:24 PM, Bj?rnar Ness wrote: >&...
2016 Feb 02
0
[PATCH net-next] virtio_net: add ethtool support for set and get of settings
On 02/02/2016 01:51 PM, Nikolay Aleksandrov wrote: > From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> > > This patch allows the user to set and retrieve speed and duplex of the > virtio_net device via ethtool. Having this functionality is very helpful > for simulating different environments and also enables th...
2016 Feb 02
0
[PATCH net-next] virtio_net: add ethtool support for set and get of settings
On Tue, Feb 02, 2016 at 01:51:20PM +0100, Nikolay Aleksandrov wrote: > From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> > > This patch allows the user to set and retrieve speed and duplex of the > virtio_net device via ethtool. Having this functionality is very helpful > for simulating different environments and also enables th...
2023 Mar 20
2
[Bridge] Multicast: handling of STA disconnect
...ome vendors may offload MCAST_TO_UCAST conversion in their own FW to reduce CPU. So, the best way is to have MCAST_TO_UCAST enabled and MDB will become per station, so we can delete MDB on disconnect. Shall, I create one patch for review? Thanks, UjjaL Roy On Mon, Mar 20, 2023 at 5:38?PM Nikolay Aleksandrov <razor at blackwall.org> wrote: > > On 20/03/2023 13:45, Ujjal Roy wrote: > > Hi Nikolay, > > > > I have some query on multicast. When streams running on an STA and STA > > disconnected due to some reason. So, until the MDB is timed out the > > stream will...
2017 Sep 01
2
virtio_net: ethtool supported link modes
...support the modes at all, but it turned out some tools are confused by this: e.g. people would try to bond virtio with a hardware device, tools would see a mismatch in speed and features between bonded devices and get confused. See commit 16032be56c1f66770da15cb94f0eb366c37aff6e Author: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> Date: Wed Feb 3 04:04:37 2016 +0100 virtio_net: add ethtool support for set and get of settings as well as the discussion around it https://www.spinics.net/lists/netdev/msg362111.html If you think we need to add more hacks like this, a stronger m...
2017 Sep 01
2
virtio_net: ethtool supported link modes
...support the modes at all, but it turned out some tools are confused by this: e.g. people would try to bond virtio with a hardware device, tools would see a mismatch in speed and features between bonded devices and get confused. See commit 16032be56c1f66770da15cb94f0eb366c37aff6e Author: Nikolay Aleksandrov <nikolay at cumulusnetworks.com> Date: Wed Feb 3 04:04:37 2016 +0100 virtio_net: add ethtool support for set and get of settings as well as the discussion around it https://www.spinics.net/lists/netdev/msg362111.html If you think we need to add more hacks like this, a stronger m...