O Cluster Algorithm giving only one cluster

hello,
I am using Oracle 10g O Cluster Algorithm for clustering. i have 790 rows of data with 18 attributes all are of float data type.
I am using ODM for creating clustering, but clustering resulting in creation of only one cluster.
can any body knows what is the actual problem.
please reply soon..
thanks in advance

It is possible for OCluster (OC) to return a single cluster if it did not find any natural clusters in the data. That is, it did not find any split in the data that would separate well the data into two groups. The number of clusters settings in OC is not the desired number of cluster but the maximum number of clusters. One way to validate this is to look at the histogram of your 18 attributes and see if there are clear peaks and valleys. In order for OC to find a split you should see at least two peaks with a reasonably deep valley (the actual criterion is statistical) in one of the attributes. If you don't see that than OC would not create more than one cluster. I am assuming that you are using ODMR and the data preparation steps suggested by ODMR.
You can also try to increase the sensitivity parameter. This will allow OC to accept clusters that it would not consider significant otherwise.
If you still want to partition your data even when OC did not find any clusters than you may try KM. KM will split the data into K clusters as long as there is enough data for that.
--Marcos

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alert log
======
Thu Oct 1 23:09:54 2009
lmon registered with NM - instance id 1 (internal mem no 0)
Thu Oct 1 23:09:54 2009
Reconfiguration started (old inc 0, new inc 12)
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ORA-00481: LMON process terminated with error
Thu Oct 1 23:24:59 2009
LMON: terminating instance due to error 481
Thu Oct 1 23:24:59 2009
System state dump is made for local instance
Thu Oct 1 23:24:59 2009
Trace dumping is performing id=[cdmp_20091001232459]
Thu Oct 1 23:25:00 2009
Instance terminated by LMON, pid = 1999
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Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Interface type 1 bge1 192.168.10.0 configured from OCR for use as a cluster interconnect
Interface type 1 bge0 10.134.246.32 configured from OCR for use as a public interface
Picked latch-free SCN scheme 3
Using LOG_ARCHIVE_DEST_1 parameter default value as /oracle/product/10.2.0/db_1/dbs/arch
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LICENSE_MAX_USERS = 0
SYS auditing is disabled
ksdpec: called for event 13740 prior to event group initialization
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large_pool_size = 12582912
instance_type = asm
cluster_database = TRUE
instance_number = 1
remote_login_passwordfile= EXCLUSIVE
background_dump_dest = /oracle/admin/+ASM/bdump
user_dump_dest = /oracle/admin/+ASM/udump
core_dump_dest = /oracle/admin/+ASM/cdump
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DIAG started with pid=3, OS id=17925
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LMON started with pid=5, OS id=17929
LMD0 started with pid=6, OS id=17931
LMS0 started with pid=7, OS id=17933
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Follow these instructions:
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I have an ipod touch 4th gen ... love it .. but only one problem... the headphone jack is giving trouble.... help me plz!!

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Have you verified that it is the headphone jack that is the problem by trying opther sets of headphones?
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Hi guys,
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Grid installation goes on up "Net Configuration Assistant" and fails.
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SCAN name: c1-scan.c1.greenisland.net, Network: 1/192.168.56.0/255.255.255.0/eth0
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SCAN VIP name: scan3, IP: /192.168.56.112/192.168.56.112
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I using a BIND server on my Windows box. And I'm forwarding my cluster sub domain ( c1.greenisland.net ) to gns which is assigned a VIP (192.168.56.50) during the installation.
Here's are my DNS configurations;
named.conf:
key "rndc-key" {
algorithm hmac-md5;
secret "P6uK1XNqsqCOd5ILnjNu3Q==";
controls {
inet 127.0.0.1 port 953
allow { 127.0.0.1; } keys { "rndc-key"; };
options {
directory "c:\named\zones";
forwarders {123.231.0.167; 123.231.0.181;};
zone "c1.greenisland.net"; IN {
type forward;
forward only;
forwarders { 192.168.56.50 port 53; };
zone "greenisland.net"; IN {
type master;
file "db.greenisland.net";;
allow-transfer { none; };
zone "56.168.192.in-addr.arpa"; IN {
type master;
file "greenisland.net.reverse";;
allow-update { none; };
db.greenisland.net
@ IN SOA s1.greenisland.net. root.greenisland.net. (
2012030401
10800
3600
604800
86400 )
NS s1.greenisland.net.
s1 IN A 192.168.56.1
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$ORIGIN c1.greenisland.net.
@ IN NS gns.c1.greenisland.net.
gns IN A 192.168.56.50
greenisland.net.reverse
$TTL 1H
@ IN SOA s1.greenisland.net. greenisland.net. (
2012030401
3H
1H
1W
1H )
56.168.192.in-addr.arpa. IN NS s1.greenisland.net.
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Attachments:
RT - Pole Placement + Complete Observer.vi ‏40 KB

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ocrcheck
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Do I understand this correctly? You have one modem with one ethernet jack on it. Only one computer can have access to the internet at a time, depending on who you plug in to the modem? If the computers have wireless capability, you don't have a wireless access point or wireless router, so you can't take advantage of the computers' wireless. You don't have a wired hub or more than one ethernet jack on the modem nor do you have a stand-alone router (that plugs into the single ethernet jack on the modem) with multiple ethernet jacks, so multiple computers cannot connect to the internet simultaneously.
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Selection 0..n
Initialization Lead Selection Checked
Singleton    Not checked
Supply Function not used
Pleae help me out...
Thanks,
Mahesh.Gattu

hi,
Use the following code for making the rows editable for a table UI element.
DATA lo_nd_cn_try TYPE REF TO if_wd_context_node.
DATA lo_el_cn_try TYPE REF TO if_wd_context_element.
DATA ls_cn_try TYPE wd_this->element_cn_try.
DATA ls_cn_try1 TYPE wd_this->elements_cn_try.
navigate from <CONTEXT> to <CN_TRY> via lead selection
lo_nd_cn_try = wd_context->get_child_node( name = wd_this->wdctx_cn_try ).
do 5 times.
clear ls_cn_try.
append ls_cn_try to ls_cn_try1.
lo_nd_cn_try->bind_table( ls_cn_try1 ).
enddo.
-> cn_try is the node which is binded with the Table UI element.
What all this is called as initialization of table. This code will make 5 rows editable, If u want more rows editable then run the loop according to the requirement.
U can write this code in the WDDOINIT.
Thanks,
Pankaj Aggarwal.

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