After applying Smart AI™️ models, the Stratifyd analytics engine generates data points based on your unstructured data. There are many different ways to visualize this output, and countless ways to filter your data, depending on your needs. This article highlights several useful visualization options you may wish to include in your workspaces, as well as suggestions for filtering your data.
The analytics engine reads through every piece of text in a dataset and compares every possible combination of words to find statistically significant n-grams.
An n-gram is a bi-gram by default, but since you have the option to change the n-gram length in the advanced settings of topic models (Theme Detection, Theme Summarization, Emerging Themes) and the Buzzword Generator, we call it an n-gram.
Buzzwords constitute a compilation of every statistically significant n-gram found in your textual data. In order for an n-gram to be deemed statistically significant, we look at how often the words occur together in the dataset versus how often they occur individually.
With a buzzword cloud visualization, topic models display n-grams in a cloud of words in various sizes and colors.
The font size represents the statistical significance of the n-gram.
The color represents the sentiment associated with the n-gram.
With a buzzword list visualization, the topic model displays the n-grams in a list along with other columns of values.
The n-grams are listed in order of highest occurrence to lowest.
The second column displays the occurrence count for each n-gram.
The third column displays the sentiment value for each n-gram.
If you mapped a date field, a fourth column displays a trend line showing how the values change over time.
You can add this list information to a topic wheel Pie chart by turning on the Key N-Grams option.
To generate semantic topics, topic models perform unsupervised machine learning on top of the n-grams to determine hidden themes, and then groups the documents accordingly.
A document may occur in multiple topics, so if you add up the percentages of documents contained in each topic, the sum is greater than 100%.
You can display topics in a pie visualization or a treemap visualization.
With a Pie visualization, each topic is represented by a slice of the pie, beginning with the largest at the 12:00 position and moving in a clockwise direction.
The words around each slice represent the top one or two n-grams for the topic.
The order and size is determined by the statistical relevance or “tightness” of the topic.
The color represents the sentiment of the topic.
With a Treemap visualization, each topic is represented by a rectangle, beginning with the largest at the bottom right and moving up and to the left.
The words in each rectangle represent the top n-grams for the topic.
The order and size is determined by the statistical relevance of the topic.
The color represents the sentiment of the topic.
Adding a time element to your structured and unstructured data helps you to understand trends and patterns and to discover relationships across different data sets.
In order to use temporal data with topic model analyses, you must map a Date field when you set up data mappings.
With a chart visualization, you can create a timeline showing topic trends where each bar represents a topic while the bar groups represent a time period.
The date field from the topic model is the X axis.
The topics field from the topic model is grouped.
The Number of Records field from Calculated Fields is the Y axis.
With a pie visualization, you can turn on the Temporal Trends option to display the same data below a topic wheel using only the topics field from the topic model.
The date automatically becomes the X axis.
The Style is set to Bar to show grouped topics for each date.
The number of records automatically becomes the Y axis.
Every time you click a data element in the workspace, it applies a filter on your data. The filter appears to the top right corner of the page next to your search bar.
Click the filter icon to open a dialog where you can change it, delete it, add other values, or select how to handle records with no value in this field.
You can set filters at three levels.
Filters do not persist when you leave the dashboard unless you save them.
To set a filter on the every widget and every tab on your dashboard, click the filter icon next to your search bar.
This opens the Global filter workspace where you can add simple filters.
Click Edit to open a visual editor where you can combine Boolean filters (AND, OR, NOT).
Click the filter icon labeled Dimension to begin adding fields.
To set a filter on only a single tab of your workspace, click the tab and select Tab Filter.
In the Tab filter workspace, as with the Global filter workspace, you can add filters, use the advanced version to create Boolean filters, and save filters as stories.
In the top right corner, the Override Global Filter applies the filter selections you make and freezes the visualizations so that the tab is no longer interactive and selections on other tabs do not affect the data on this tab. Leave the override checkbox cleared if you want to interact with the data and allow interactions with other tabs to affect the data on this tab.
When you apply tab-level filters, the filter icon appears on the tab so that anyone using the dashboard can see that it is filtered. If you opt to override global filters, the filter icon appears in red.
To add or edit a widget filter, hover over the selected widget's upper right corner and select the filter icon.
Then, click +widget filter to add a new filter or Edit to edit an existing filter.
As with tab-level filters, the Override Global Filter applies the filter selections you make and freezes the visualization so that the widget is no longer interactive and selections on other widgets do not affect the data on this widget. Leave the override checkbox cleared if you want to interact with the data and allow interactions with other widgets to affect the data on this widget.
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