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QUESTION
I am completely new to AWS ElastiSearch and am trying to do something on a dataset about tagged movies. The dataset has five columns : genres, movieId, tag, title, userId
. The year of each movie is contained in the title like so Waterworld (1995)
.
I want to see how many movies with the tag true story
were produced in 2002.
Since I first have to match the date, then filter with the tag and finally count the movies I tried doing it with a bool like so:
ANSWER
Answered 2022-Mar-28 at 13:14aggs
can't be inside the query block, aggs
and query
are siblings, you correct query should be like below
QUESTION
I have a pandas dataframe like this:
...ANSWER
Answered 2022-Mar-21 at 15:56The Pandas Documentation states:
While pivot() provides general purpose pivoting with various data types (strings, numerics, etc.), pandas also provides pivot_table() for pivoting with aggregation of numeric data
Make sure the column is numeric. Without seeing how you create trainingtaken
I can't provide more specific guidance. However the following may help:
- Make sure you handle "empty" values in that column. The Pandas guide is a very good place to start. Pandas points out that "a column of integers with even one missing values is cast to floating-point dtype".
- If working with a dataframe, the column can be cast to a specific type via
your_df.your_col.astype(int)
or for your example,pd.trainingtaken.astype(int)
QUESTION
Let's say I have the following Spark frame:
...ANSWER
Answered 2021-Nov-14 at 13:03Here's is one way of doing:
First, generate new dataframe all_dates_df
that contains the sequence of the dates from min to max date in your grouped df
. For this you can use sequence
function:
QUESTION
I am working on an NLP assignment and having some problems removing duplicated strings from a pandas column.
The data I am using is tagged, so some of the rows of data were repeated because the same comment could have multiple tags. So what I did was group the data by ID
and Comment
and aggregated based on tags, like so:
ANSWER
Answered 2021-Nov-10 at 19:32Is this what you want?
QUESTION
df=
...ANSWER
Answered 2021-Apr-15 at 23:55Can be done in one line but it's a bit of a mouthful...
QUESTION
In a nutshell: I need to calculate the Hurst Exponent (HE) across a rolling window inside a pandas dataframe and assign the values to its own column.
The HE function I use was lifted from here as it seemed more robust. For convenience it's posted below:
...ANSWER
Answered 2021-Feb-15 at 21:21I think your problem is that your window is too short. It says in the docstring that the window length has to be 100+ elements, and the Hurst code isn't handling it properly, resulting in a failure of the SVD.
Separately, your test is actually slicing everything but the last 20 elements, so is actually a long array, which is why it didn't fail:
QUESTION
I wrote the function to calculate the values of the linear regression based on scipy.stats.linregress. But when I apply it to my dataset, the code runs for a long time, about 30 minutes. Is there any way to speed up the process? The dataset contains about 9 million rows and about 100 thousand groups. This function should be applied to 10 columns.
...ANSWER
Answered 2021-Jan-13 at 16:01The general method is to skip useless lines.
x = x
does not do anything, so better have this:
QUESTION
I Have fields Category & Questions in the Table.
My Requirement is for the below mentioned 3 category against I need the questions which is tagged (SO I want the Category and Questions field in the query) by writing elastic search query
Category :
OLA
BNA
DRG
GET logstash-sdc-feedback/_search? { "_source":["Category.keyword"], "size": 5, "query":{ "bool": { "must": [ {"match":{"Category.keyword"": "OLA","BNA","DRG"}}
],
} }, "aggs": { "MyBuckets": { "terms": { "field": "questions.keyword","Category.keyword" "order":{ "_count": "asc" }, "size": "5"
} } } }
...ANSWER
Answered 2021-Jan-04 at 16:33You can use terms query along with terms aggregation, to achieve your use case.
Adding a working example
Index Data:
QUESTION
I'm streaming some temperature data to Databricks from an Azure Event Hub, and looking to store the latest values in a delta table. For the temperature values for each sensor, I'm taking the max value of the last five minutes. I seem to be hitting a block with the 'upsert' to the delta table. Data is coming every 10-15 seconds for each device. I'm not sure if I'm using the writeStream correctly or may have to use a window function over the data frame to insert the latest aggerated value.
So far I have created a basic example in pysprak to see if it can be done
...ANSWER
Answered 2020-Nov-10 at 22:02I think you forgot to give t as alias for your latestSensorReadings table. Could you try:
QUESTION
I want to get all the distinct records as per "departmentNo" . Please check the below Index Data : (it is dummy data.)
...ANSWER
Answered 2020-Sep-24 at 19:53You can do that by using field collapsing:
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