Analytics Vidhya

FEBRUARY 4, 2022

Within the same process, we will be going over the following techniques and processes: Lemmatization / Stemming Count Vectorizer One Hot Encoding Train Test Split Principal Component Analysis Some general text cleaning and null value imputation […]. The post Supreme Court Judgement Prediction appeared first on Analytics Vidhya.

Testing 276

Testing Analytics Data Science 276

Cloudera

AUGUST 8, 2022

First we check the history of the table and see: DESCRIBE HISTORY flights_v3; Example Results: creation_time. snapshot_id. is_current_ancestor. 2022-07-20 09:38:27.421000000. 7445571238522489274. 2022-07-20 09:41:24.610000000. 1177059607967180436. 7445571238522489274. 2022-07-20 09:50:16.592000000. 2140091152014174701. 1177059607967180436.

Snapshot 88

Snapshot Data Warehouse Machine Learning Cost-Benefit 88

AWS Big Data

NOVEMBER 17, 2023

Query 2 with wscs as (select sold_date_sk ,sales_price from (select ws_sold_date_sk sold_date_sk ,ws_ext_sales_price sales_price from web_sales union all select cs_sold_date_sk sold_date_sk ,cs_ext_sales_price sales_price from catalog_sales)), wswscs as (select d_week_seq, sum(case when (d_day_name='Sunday') then sales_price else null end) sun_sales, (..)

Optimization 115

Optimization Statistics Metadata Data Lake 115

Juice Analytics

APRIL 7, 2023

Identify any data fields that have many null or empty values. Label these data fields as "null or empty”. Identify any data fields that have many null or empty values. Label these data fields as "null or empty”. Also, identify any data fields that have all the same value.

Metrics 97

Metrics Testing Modeling IT 97

AWS Big Data

AUGUST 3, 2023

Implement following steps to star the execution of the jobs. Start data ingestion to Kinesis Data Streams using AWS DMS To start data ingestion from Amazon RDS to Kinesis Data Streams, complete the following steps: On the AWS DMS console, choose Database migration tasks in the navigation pane.

Data Lake 82

Data Lake Visualization Dashboards Insurance 82

AWS Big Data

MARCH 17, 2023

On top of the call to the Java binding, many of the functions in the H3AthenaHandler check whether the input parameter is null. The null check is useful because we don’t assume the input to be non-null. In practice, null values for an H3 index or address are not unusual.

Visualization 94

Visualization Machine Learning Consulting Data Warehouse 94

AWS Big Data

JULY 27, 2023

The following logic in the stored procedure checks if the approximate_arrival_timestamp in mv_demo_super_unnest is greater than the EndDate timestamp in the MetaData_ETL audit table, so that it can only process the incremental data.

Data Warehouse 85

Data Warehouse Analytics Metadata Dashboards 85

Cloudera

AUGUST 10, 2021

Fill in any nulls for the columns c_birth_year, c_birth_month, and c_birth_day. In this example, we’re filling null years with 1970 and null months and days with 1. Add the c_birth_date column to the dataset where we filled in null values. Using the Hadoop CLI. hdfs dfs -ls ofs://tpc.data.ozone1/. customer").

Testing 104

Testing Metadata IT Modeling 104

AWS Big Data

MAY 2, 2023

Run the following create table script to make a sample table (for this example, public.customer ): CREATE TABLE customer ( c_custkey int8 NOT NULL , c_name varchar(25) NOT NULL, c_address varchar(40) NOT NULL, c_nationkey int4 NOT NULL, c_phone char(15) NOT NULL, c_acctbal numeric(12,2) NOT NULL, c_mktsegment char(10) NOT NULL, c_comment varchar(117) (..)

Data Warehouse 62

Data Warehouse Software Visualization IoT 62

CIO Business Intelligence

MAY 25, 2022

Je n’ai absolument rien sur place, nulle part, ni en colocation », dit Robert Pope, DSI de Canada Jetlines. La nouvelle compagnie aérienne canadienne se dirigera droit vers les nuages lors de son vol inaugural cet été, en exploitant l’intégralité de ses TI en mode virtuel. Tout ici est infonuagique. Nous sommes complètement « cloud ».

Management 93

Management IT 93

AWS Big Data

FEBRUARY 9, 2023

Because the schema for the Account_Staging table in Snowflake database has a NOT NULL constraint for the fields Account_Number and Active , records containing a null value for these fields should be ignored. To configure this integration, follow steps 3–6 in Configuring a Snowflake Storage Integration to Access Amazon S3. Choose Next.

Data Warehouse 78

Data Warehouse Data-driven Snapshot Testing 78

CIO Business Intelligence

MAY 28, 2022

Je n’ai absolument rien sur place, nulle part, ni en colocation », dit Robert Pope, DSI de Canada Jetlines. La nouvelle compagnie aérienne canadienne se dirigera droit vers les nuages lors de son vol inaugural cet été, en exploitant l’intégralité de ses TI en mode virtuel. Tout ici est infonuagique. Nous sommes complètement « cloud ».

Management 91

Management IT 91

AWS Big Data

MARCH 8, 2023

Navigate to the schema db1.sampledatabase.movies sampledatabase.movies version 2 to check the new version of the schema created for the movies table movies including the country column that you added: { "type": "record", "name": "Value", "namespace": "db1.sampledatabase.movies",

Data-driven 77

Data-driven Testing Data Processing Management 77

AWS Big Data

APRIL 10, 2024

Make sure that all tables to be replicated from source to target have a primary key. Tables without a primary key can’t be replicated to the target.

Data Warehouse 94

Data Warehouse Analytics Metrics Snapshot 94

AWS Big Data

FEBRUARY 20, 2024

show() >>> quit() Note that here we tested the authentication from within the cluster, but we can interact with Trino, Hive, Presto and Livy even from outside the cluster as far as connectivity and DNS resolution are properly configured.

Testing 88

Testing Data Processing Interactive Management 88

Smart Data Collective

DECEMBER 19, 2021

For instance, the Random Forest Algorithm in Python doesn’t support null values. Hence, it would help if you preprocessed the null values before using the data in the Random Forest algorithm.

Optimization 132

Optimization Machine Learning Data mining Statistics 132

AWS Big Data

MARCH 19, 2024

When prompted, enter the database password that you specified during the stack creation.

Optimization 91

Optimization Data-driven Management Testing 91

MLWhiz

NOVEMBER 10, 2019

I went to Wikipedia to find something and here is the definition: > In statistical hypothesis testing, the p-value or probability value is, for a given statistical model, the probability that, when the null hypothesis is true, the statistical summary (such as the sample mean difference between two groups) would be equal to, or more extreme than, (..)

Statistics 74

Statistics Testing Modeling IT 74

Octopai

JANUARY 11, 2023

Like the scene where data analyst Dave used the query “select concat(‘SSS’,null) from dual” in Snowflake right after they migrated from Oracle db, and Dave assumed that it would return SSS – because that’s how it worked in Oracle – but really it returned null. How about a blooper reel of data migrations? Isn’t that a riot?

Recreation/Entertainment 81

Recreation/Entertainment Visualization Cost-Benefit Reporting 81

AWS Big Data

NOVEMBER 22, 2023

We’re launching capability of generating column-level statistics such as number of distinct, number of nulls, max, and min on files such as Parquet, ORC, JSON, Amazon ION, CSV, XML on AWS Glue tables. For example, CBO can use column statistics such as number of distinct values and number of nulls to improve row prediction.

Statistics 104

Statistics Data Lake Optimization Data-driven 104

AWS Big Data

JUNE 6, 2023

Completeness Checks for any blank or NULLs in data. IsPrimaryKey Checks if a column is a primary key (not NULL and unique). Useful for governance teams to enforce column name consistency. ColumnValues Checks if data is consistent per defined values. This rule supports regular expressions. DataFreshness Checks if data is fresh.

Data Quality 95

Data Quality Statistics Data Lake Visualization 95

Cloudera

NOVEMBER 30, 2022

. + -+ + +. rows selected (0.038 seconds). 1 (b): Phoenix thick and thin client (using Java application): try (Connection conn = DriverManager.getConnection(jdbcUrl)) {. With exception handling.

Snapshot 79

Snapshot Big Data Management Testing 79

Sisense

AUGUST 28, 2020

NULL values: This can be used to check for the completeness of fields. If we know a field should not be blank (or null), we can test to make sure that is the case. This, along with the null value check, is common for fields we consider to be primary keys. Uniqueness: This test is used to avoid duplication or overcounting.

Data Integration 101

Data Integration Testing Data Quality Data-driven 101

AWS Big Data

AUGUST 31, 2023

The following image shows what you should have after creating the three Amazon S3 events: Step 2: Create objects in Amazon Redshift Connect to the Amazon Redshift cluster and create the following objects: Three schemas: create schema blogdemo_staging; -- for staging tables create schema blogdemo_core; -- for target tables create schema blogdemo_proc; (..)

Data Warehouse 85

Data Warehouse Data-driven Testing Business Intelligence 85

AWS Big Data

MARCH 7, 2024

The following is a sample ISM policy that rolls over data into the UltraWarm tier after 2 days, moves it to cold storage after 5 days, and deletes it from cold storage after 21 days: { "policy": { "description": "hot warm delete workflow", "default_state": "hot", "schema_version": 1, "states": [ { "name": "hot", "actions": [ { "rollover": { "min_index_age": (..)

Data Lake 115

Data Lake Analytics Dashboards Metrics 115

Smart Data Collective

SEPTEMBER 30, 2022

All Patents and Copyrights Become Null and Void. For instance, a bank may use predictive analytics to learn a loan applicant is a member of a particular racial group and then reject their application; this practice, known as “automated discrimination,” has gained widespread attention in recent years.

Big Data 132

Big Data Data-driven Risk Measurement 132

AWS Big Data

JULY 26, 2023

null| Huizenga| male| Bill|00aa2dc0-bfb6-441.|[{Bill null| Clawson| male| Curtis|00aca284-9323-495. .| Clawson, Curtis| |1930-08-14| null|2001-10-26| Solomon| male| Gerald|00b73df5-4180-441.|[{S000675, link] (de),| Gerald Solomon|[{null, Gerald B.| null| Rigell| male| Edward|00bee44f-db04-4a7.|[{R000589,

Data Integration 85

Data Integration Interactive Machine Learning Big Data 85

Juice Analytics

JULY 6, 2018

Here are 25 more lessons we've learned (the hard way) about what's easy and what's hard when it comes to telling data stories: Easy: Picking a good visualization to answer a data question Hard: Discovering the core message of your data story that will move your audience to action Easy: Knowing who is your target audience Hard: Knowing what motivates (..)

Slice and Dice 83

Slice and Dice Predictive Modeling Visualization Data-driven 83

Juice Analytics

NOVEMBER 27, 2019

Suddenly there are unexpected null values. Things get trickier when the data is “constantly varied” — whether that is across time, across customers, or across organizations. The behaviors captured in the data can surprise you. Or a user has entered an interminably-long text value where a word or two is expected. (We

Visualization 63

Visualization Metrics Dashboards Testing 63

Cloudera

FEBRUARY 8, 2023

union(stayed.withColumn( 'label' ,lit( 0 ))) That triggered a regression because I did not include the null users. There is no point in carrying around this extra baggage all this time. In fact this breaks another rule of big data processing: Filter early Finally, I removed the casting of the “Churn” column and left it as a boolean.

Measurement 57

Measurement Testing Cost-Benefit ROI 57

AWS Big Data

JULY 11, 2023

then((response) => response.json() ).then((response)

Dashboards 61

Dashboards Testing Business Intelligence Management 61

Domino Data Lab

OCTOBER 7, 2020

simData.mean = apply(simData.noise, 2, mean) simData.dist.ctr = sqrt(sum((simData.mean -. length(simData.mean)))^2)) boundaryProb.results = rbind(boundaryProb.results, c(2+addedNoise, boundaryProb(simData.noise), simData.dist.ctr)) } } colnames(boundaryProb.results) = c('Dimensions', 'Pr(Min. <= <= 0.001)', 'Pr(Max. >= data = simData.y)

Statistics 145

Statistics Testing Predictive Modeling Modeling 145

Smart Data Collective

MARCH 19, 2023

So, let’s dig into details if dropshipping is a reality with null investments and how to start without money and use predictive analytics to have an edge over your competition. Unfortunately, creating a successful dropshipping business is easier said than done.

Predictive Analytics 125

Predictive Analytics Analytics Manufacturing Advertising 125

Octopai

FEBRUARY 21, 2022

But what about this query: select concat(‘SSS’,null) from dual ? Because of the difference with how they process the CONCAT function, Oracle db will return SSS , while Snowflake will return null.

Recreation/Entertainment 78

Recreation/Entertainment Cost-Benefit ROI Reporting 78

Cloudera

JUNE 10, 2021

CREATE TABLE OUTPUT_TEST_TABLE (id BIGINT NOT NULL PRIMARY KEY, col1 VARCHAR, col2 INTEGER); Build phoenix-spark project. Use SQLLine external client to do Apache Phoenix SQL operations. In the SQLLine command-line interface, use the following command to create a table in the COD instance.

Testing 88

Testing Big Data Interactive Data Processing 88

AWS Big Data

JANUARY 10, 2024

If no records are coming, this metric will be null and you won’t be able to scale down. Kinesis Data Streams metrics – Requires the data stream name: MillisBehindLatest – The number of milliseconds the consumer is behind the head of the stream, indicating how far behind the current time the consumer is.

Metrics 101

Metrics Management Snapshot IT 101

AWS Big Data

FEBRUARY 19, 2024

These are standard DDL statements coming from the AWS Labs DDL file with modified table names. These are standard DDL statements coming from the AWS Labs DDL file with modified table names.

Cost-Benefit 87

Cost-Benefit Marketing Data Warehouse Interactive 87