kandi X-RAY | DataMining Summary
kandi X-RAY | DataMining Summary
Java implementation of the classic Data mining (big data) algorithm. Create a new Java project, and copy this project to the SRC directory is ok.
Top functions reviewed by kandi - BETA
- The main method
- Runs ANTOT tool
- Display input
- Main method for testing
- Runs the test program
- Show a random forest
- The main test function
- Display CBA tool
- Entry point
- Test program
- Main program
- Command - line tool
- Main launcher
- Main entry point
- Display the input file
- Split the cluster
- Main program
- Launch the kMeans algorithm
- Entry point to the KNNTool tool
- Test classifier
- Entry point for testing
- Read the data from the file
- Performs the minimizing algorithm
- Get the svm problem
- Read the data from the classpath
- Remove edge
- Reads the entire graph file
- Reads all points from a file
- Load svm model from a file
- Saves model to disk
DataMining Key Features
DataMining Examples and Code Snippets
Trending Discussions on DataMining
I have a query and which give the count greater than 1, but what I expect is I need the result to be based on particular column(Rollno.) How to achieve it.
ANSWERAnswered 2021-May-03 at 09:01
like this? I do not confirm your needs, but the internalstaff_2 column can refer to STRING_AGG() to replace the nested subquery in the following script.
I have been given an .npz file containing the data. I have explored the dataset, and noted that it has 5 datatypes:...
ANSWERAnswered 2021-Mar-24 at 01:52
Ok, since you are new to programming I will explain how indexing works (in numpy, which is an almost-universal mathametical library in python).
Say we have a variable
folds which is defined as:
I wrote this query to filter out the results below 38 percentage. But when I execute I get the random result with no errors and not the expected results....
ANSWERAnswered 2021-Mar-13 at 05:34
Assuming the percentage is less than 100, below code computes the numeric value within the string column and gives you the list of percentages which are less than or equal to 38. This will not work in all cases as the percentage column is not normalized.
From this table
ANSWERAnswered 2021-Jan-25 at 17:17
I can get exact 3 years of value with the below code (from 01/24/2018 - 01/25/2021)...
ANSWERAnswered 2021-Jan-25 at 14:24
Lots of ways. One is to combine YEAR, which extracts the numeric year value from a date and DATEFROMPARTS, which constructs a date from Year, Month, and Day componenets. EG:
I've been fighting against oracle sql developer for about two days and I just can't get the thing to work.
I would like to learn more about data mining and take a look at their examples and work threw their tutorials, but I cant even get the thing setup.
What I did:
Installed Oracle 12_1 database + oracle_examples.
I then created an administrator account via the oracle sql developer.
- connection name: admin
- username: sys
- password: password
- Role: sysdba
- SID: orcl
- Everything else was left as it is.
I then had to install all the example .sql files manually.
- I followed the guide from here: Oracle Install Example Schemas
I did everything exactly the same as the guide told me to do, except I had to do this "hack" command which allowed me to create users. Else I would always get the
ORA-65096: invalid common user or role name
alter session set "_oracle_script"=true;
The new users now show up in every connection that I create in my SQL Developer under "other users". (HR, OE, etc..)
Now I created a new user "dmuser" like the guide told me to do here: (yes - with sql plus)
Now I wanted to install the data miner repo. Which should be very easy: Tools, data miner, make visible. And the data miner window showed up. I then added my dmuser connection, double click dmuser to install the data miner repository. I then press start to install the repo and then it says "Task Failed" with the MOST useless error message I have ever seen:...
ANSWERAnswered 2017-Jul-20 at 11:03
Aight, be prepared for a complicated answer...
Sql developer exectues a .sql file to install the data miner repo. The sql is named "installodmr.sql". Found the info here: Install repo by script
I had a look at the script and what it does. It opens more scripts which insert tables, and users and grant privileges etc...
The problem why the script would not execute correctly was due to a couple of reasons.
1) As mentioned in my question, I can't just create a user, I have to type the command:
I have a script that replaces file names with a new filename that I specify, however, right now it is case sensitive (if a filename = DM, but I enter Dm, it is not being replaced)
I already tried filename.lower(), in the os.rename, but it doesn't seem to work. There are no errors though, that filename remains unaltered though....
ANSWERAnswered 2019-Oct-21 at 20:14
Your actual file names are not necessarily in lowercase, but you're passing to the
replace method a lowercase string of
'dm'. It cannot find the lowercase
'dm' in the file name and therefore returns the same file name, resulting in
os.rename doing nothing.
You can lowercase the file name before you call the
replace method instead:
I created a default dictionary from a large amount of data which has values as a list as previewed below. The default_dictionary values are represented as lists in the default dictionary....
ANSWERAnswered 2018-Dec-02 at 14:14
The code below does the following:
- Create a new dictionary that holds those records that occur in both of your dictionaries, with each list sorted from lowest to highest 'sum' (I have written it in one expression; for readability you could consider breaking it down into steps)
- Go through the new dictionary and see whether the lowest-sum item must have its own line (when it is the only item) or not
- Go through the items that must have their own line and output the contents as you formatted them above.
Alternatively you could import it into a DataFrame, to let Pandas handle saving as CSV. I hope this helps.
When I use "spark streaming" to read "kafka" (requiring sasl validation) and then store the data to "HBase", "HBase" gives the following error
java.io.IOException: java.lang.reflect.InvocationTargetException at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:240) at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218) at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:181) at com.xueersi.datamining.ups.database.implement.HbaseClient.connect(HbaseClient.scala:91) at com.xueersi.datamining.ups.stream.start.BaseInfoLogAnalysisStart$$anonfun$main$1$$anonfun$apply$2.apply(BaseInfoLogAnalysisStart.scala:78) at com.xueersi.datamining.ups.stream.start.BaseInfoLogAnalysisStart$$anonfun$main$1$$anonfun$apply$2.apply(BaseInfoLogAnalysisStart.scala:75) at org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$29.apply(RDD.scala:925) at org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$29.apply(RDD.scala:925) at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1956) at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:1956) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87) at org.apache.spark.scheduler.Task.run(Task.scala:99) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:325) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238) ... 15 more Caused by: java.lang.ExceptionInInitializerError at org.apache.hadoop.hbase.ClusterId.parseFrom(ClusterId.java:64) at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:75) at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105) at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:931) at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.(ConnectionManager.java:658) ... 20 more Caused by: java.lang.NullPointerException at org.apache.kafka.common.security.plain.PlainSaslServer$PlainSaslServerFactory.getMechanismNames(PlainSaslServer.java:163) at org.apache.hadoop.security.SaslRpcServer$FastSaslServerFactory.(SaslRpcServer.java:381) at org.apache.hadoop.security.SaslRpcServer.init(SaslRpcServer.java:186) at org.apache.hadoop.ipc.RPC.getProtocolProxy(RPC.java:570) at org.apache.hadoop.hdfs.NameNodeProxies.createNNProxyWithClientProtocol(NameNodeProxies.java:418) at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:314) at org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider$DefaultProxyFactory.createProxy(ConfiguredFailoverProxyProvider.java:68) at org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider.getProxy(ConfiguredFailoverProxyProvider.java:152) at org.apache.hadoop.io.retry.RetryInvocationHandler.(RetryInvocationHandler.java:75) at org.apache.hadoop.io.retry.RetryInvocationHandler.(RetryInvocationHandler.java:66) at org.apache.hadoop.io.retry.RetryProxy.create(RetryProxy.java:58) at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:181) at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:762) at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:693) at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:158) at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2816) at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:98) at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2853) at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2835) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:387) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:186) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:371) at org.apache.hadoop.fs.Path.getFileSystem(Path.java:296) at org.apache.hadoop.hbase.util.DynamicClassLoader.initTempDir(DynamicClassLoader.java:120) at org.apache.hadoop.hbase.util.DynamicClassLoader.(DynamicClassLoader.java:98) at org.apache.hadoop.hbase.protobuf.ProtobufUtil.(ProtobufUtil.java:246) ... 25 more
But when I read another "Kafka" (without sasl validation), there was no problem with "HBase. In addition, "HBase" is required for "kerberos" authentication I think there is a conflict between kafka's sasl certification and hbase's kerberos certification Is there anyone who can give me some advice?...
ANSWERAnswered 2018-Nov-22 at 09:45
I seem to have found the answer: https://issues.apache.org/jira/browse/KAFKA-5294
Then I manually specify the dependencies(The version I used to use was 0.10.2.1)
i wanted to use the som package from http://hackage.haskell.org/package/som to test some things with my own Data. I have looked up the example https://github.com/mhwombat/som/blob/master/examples/housePrices.hs
and i have to rewrite the code for my use case which is Data Like Float or Double Lists in a List...
ANSWERAnswered 2018-Sep-23 at 13:49
I found my answer for this problem after checking and trying out the other exmple given in https://github.com/mhwombat/som/blob/master/examples/colours.hs
Using the function euclideanDistanceSquared and adjustVector provided by the som lib instead of my defined ones worked for me.
No vulnerabilities reported
You can use DataMining like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the DataMining component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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