tsignal | Analyzing social media sentiment and its impact on stock | Predictive Analytics library
kandi X-RAY | tsignal Summary
kandi X-RAY | tsignal Summary
Analyzing social media sentiment and its impact on stock market. Personal project, does not represent Google. This Go app deploys into GKE, subscribes to Twitter stream for all companies defined in the Stocks table in Cloud Spanner and scores each event against the Google NLP API while comparing the user sentiment against the stock ask price against Yahoo API. Eventually there will be a UI, for now, there are sample SQL scripts you can use to execute against the Cloud Spanner DB to analyze the data. All GCP services used in this example can be run under the GCP Free Tier plan. More more information see
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Top functions reviewed by kandi - BETA
- Main entry point
- Subscribe to Stream
- loadDefaultData is used to load the stock data .
- updatePrices is used to get the stock price
- getPostsSince returns a list of posts since
- getStocks returns all of the stock prices .
- loadSingleStockPrice retrieves the single stock price for a single stock price .
- savePost saves the content of the post .
- get ask price
- query sends a query to Slack
tsignal Key Features
tsignal Examples and Code Snippets
Community Discussions
Trending Discussions on tsignal
QUESTION
Good day
EDIT: What I want: From any current/voltage waveform on a Power System(PS) I want the filtered 50Hz (fundamental) RMS values magnitudes (and effectively their angles). The current as measured contains all harmonics from 100Hz to 1250Hz depending on the equipment. One cannot analyse and calculate using a wave with these harmonics your error gets so big (depending on equipment) that PS protection equipment calculates incorrect quantities. The signal attached also has MANY many other frequency components involved.
My aim: PS protection Relays are special and calculate a 20ms window in a very short time. I.m not trying to get this. I'm using external recording tech and testing what the relays see are true and they operate correctly. Thus I need to do what they do and only keep 50Hz values without any harmonic and DC.
Important expected result: Given any frequency component that MAY be in the signal I want to see the magnitude of any given harmonic (150,250 - 3rd harmonic magnitudes and 5th harmonic of the fundamental) as well as the magnitude of the DC. This will tell me what type of PS equipment possibly injects these frequencies. It is important that I provide a frequency and the answer is a vector of that frequency only with all other values filtered OUT. RMS-of-the-fundamental vs RMS differs with a factor of 4000A (50Hz only) and 4500A (with other freqs included)
This code calculates a One Cycle Fourier value (RMS) for given frequency. Sometimes called a Fourier filter I think? I use it for Power System 50Hz/0Hz/150Hz analogues analysis. (The answers have been tested and are correct fundamental RMS values. (https://users.wpi.edu/~goulet/Matlab/overlap/trigfs.html)
For a large sample the code is very slow. For 55000 data points it takes 12seconds. For 3 voltages and 3 currents this gets to be VERY slow. I look at 100s of records a day.
How do I enhance it? What Python tips and tricks/ libraries are there to append my lists/array. (Also feel free to rewrite or use the code). I use the code to pick out certain values out of a signal at given times. (which is like reading the values from a specialized program for power system analysis) Edited: with how I load the files and use them, code works with pasting it:
...ANSWER
Answered 2019-Nov-21 at 10:55As I said in my previous comment:
Your code mainly relies on a
for
loop with a lot of indexation and scalar operations. You already have importednumpy
so you should take advantage of vectorization.
This answer is a start towards your solution.
Light weight MCVEFirst we create a trial signal for the MCVE:
QUESTION
I'm trying to show a set of select option base on what is selected on another select option. I have some issue to understand the logic with the js script.
Example: Any advice how to hide the other options which are not used
if TV show only value device
, tsignal
, blackscreen
, other
If Radio show only the value: device
, rsignal
, other
ANSWER
Answered 2019-Jul-15 at 17:51I guess that you meant to use .change
so when #test
dropdown changed you check what its value and based on that show / hide option
s, right?
QUESTION
I'm having a problem printing (printf) the dot11Bssid (which is a DOT11_MAC_ADDRESS type). The address is contained within a WLAN_BSS_ENTRY, which is contained within a collection returned from WlanGetNetworkBssList.
When I attempt to print it, it looks like it's just an incremental count and not the actual value for the BSSID - but I cannot figure out why. Everything else prints as it should.
...ANSWER
Answered 2018-Nov-23 at 15:03Yes print each byte of the BSSID (same format as MAC address) separately and padded with leading 0 if necessary.
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