![\"short-long\"](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F7917824%2F9b51760603a8f72d3604305ed76b8841%2Fsl.png?generation=1723307476416972&alt=media\")
Did you notice that not all planets take the same time to pass in front of their host star? Look at the light curves of two extreme planets:
\n
The top planet evidently moves faster: it starts its transit later and it finishes earlier than the bottom planet.
\nIf we plot the start and end times against each other for every planet, we make two observations:
\n![\"correlation\"](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F7917824%2Ff562088b3ebd27ea1e45d07d9871f0ea%2Fcorr.png?generation=1723307217298339&alt=media\")
Did you notice that not all planets take the same time to pass in front of their host star? Look at the light curves of two extreme planets:
\n
The top planet evidently moves faster: it starts its transit later and it finishes earlier than the bottom planet.
\nIf we plot the start and end times against each other for every planet, we make two observations:
\n
great job.
", "rawMarkdown": "great job.", "votes": 13 }, { "id": 2972406, "postDate": "2024-08-28T10:11:26.697Z", "content": "Dear all- Joined the challenge lately and still trying to make sense of the data; Does someone know the geometrical, electronical, astronomical, or astrological explanation for the upwards/downwards trends in some the out-of-transit levels?
\nAren't they supposed to be completely flat?
\nAttached from the host supplied calibration notebook- marked are the trends I'm asking about?
\nThanks in advance!![\"\"](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10813%2F2b61d8a8029e9c268f92726d42900d7c%2F__results___42_1_circles.jpg?generation=1724839847814486&alt=media\")
Not all planets were built to travel on flat paths. The data is to represent how they could be viewed from the Ariel satellite and most will not be a direct angles to the satellite cameras.
", "rawMarkdown": "Not all planets were built to travel on flat paths. The data is to represent how they could be viewed from the Ariel satellite and most will not be a direct angles to the satellite cameras.", "votes": 3 }, { "id": 2972587, "postDate": "2024-08-28T14:25:07.583Z", "content": "In the case of an ideal observation, I guess that this should indeed be totally flat. But in practice, the telescope is usually not stable with time (movement of the telescope, change of the temperature of the dish, surrounding irradiation, problems with the electronics …) and this is quite usual to have a \"not meaningful baseline\" that needs to be removed from observations.
\nHere, the host provided simulated data but they also simulated the response of the telescope and to some extent, they included the imperfections of the telescope in the simulations (hence the preprocessing phase where the flat fields, etc … are removed).
", "rawMarkdown": "In the case of an ideal observation, I guess that this should indeed be totally flat. But in practice, the telescope is usually not stable with time (movement of the telescope, change of the temperature of the dish, surrounding irradiation, problems with the electronics ...) and this is quite usual to have a \"not meaningful baseline\" that needs to be removed from observations.\n\nHere, the host provided simulated data but they also simulated the response of the telescope and to some extent, they included the imperfections of the telescope in the simulations (hence the preprocessing phase where the flat fields, etc ... are removed).", "votes": 3 }, { "id": 2972810, "postDate": "2024-08-28T19:46:08.243Z", "content": "The changing luminosity of the star can be caused by starspots or stellar pulsation.
", "rawMarkdown": "The changing luminosity of the star can be caused by [starspots](https://en.wikipedia.org/wiki/Starspot) or [stellar pulsation](https://en.wikipedia.org/wiki/Stellar_pulsation).", "votes": 2 } ] }, { "id": 2965826, "postDate": "2024-08-21T10:46:14.993Z", "content": "It may be that the planet moves faster, however another possible explanation is that the impact parameter is larger ![\"\"](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F867582%2Faae0da9efc3444a37301a18d68117456%2FScreenshot%202024-08-21%20at%2015.45.16.png?generation=1724237167440016&alt=media\")
Thank you for sharing @ambrosm -> as transit duration different, is transit depth also different scales? from graph not clear
\n=> is the 435 and 507 => planet ids -> 2758428682, 3109601437 as both belongs to star 0.
\n=> is it not good to see, same graph for each host star.
Hi @seshurajup
\nYour approach to feature engineering is truly innovative!
", "rawMarkdown": "Your approach to feature engineering is truly innovative!" }, { "id": 2955787, "postDate": "2024-08-11T14:10:02.907Z", "content": "Good job! Great insight!
\nCan you explain how you determined the start and end timepoints? Did I miss it somewhere in the data or did you somehow determine the imperial timestep for each example?
Hi @serhiikravtsov, I implemented an algorithm which finds the highest step in a noisy time series.
", "rawMarkdown": "Hi @serhiikravtsov, I implemented an algorithm which finds the highest step in a noisy time series.", "votes": 6 } ] }, { "id": 2972982, "postDate": "2024-08-29T04:17:18.697Z", "content": "Thank You for the Valuable Information on Feature Engineering!
", "rawMarkdown": "Thank You for the Valuable Information on Feature Engineering!" } ], "comments": [ { "id": 2957277, "author_name": "", "author_url": "", "post_date": "2024-08-13T01:13:32.543000", "content": "great job.
", "votes": 13, "replies": [] }, { "id": 2972406, "author_name": "Yahalom", "author_url": "", "post_date": "2024-08-28T10:11:26.697000", "content": "Dear all- Joined the challenge lately and still trying to make sense of the data; Does someone know the geometrical, electronical, astronomical, or astrological explanation for the upwards/downwards trends in some the out-of-transit levels?
\nAren't they supposed to be completely flat?
\nAttached from the host supplied calibration notebook- marked are the trends I'm asking about?
\nThanks in advance!
Not all planets were built to travel on flat paths. The data is to represent how they could be viewed from the Ariel satellite and most will not be a direct angles to the satellite cameras.
", "votes": 3, "replies": [] }, { "id": 2972587, "author_name": "FabienDaniel", "author_url": "", "post_date": "2024-08-28T14:25:07.583000", "content": "In the case of an ideal observation, I guess that this should indeed be totally flat. But in practice, the telescope is usually not stable with time (movement of the telescope, change of the temperature of the dish, surrounding irradiation, problems with the electronics …) and this is quite usual to have a \"not meaningful baseline\" that needs to be removed from observations.
\nHere, the host provided simulated data but they also simulated the response of the telescope and to some extent, they included the imperfections of the telescope in the simulations (hence the preprocessing phase where the flat fields, etc … are removed).
", "votes": 3, "replies": [] }, { "id": 2972810, "author_name": "AmbrosM", "author_url": "", "post_date": "2024-08-28T19:46:08.243000", "content": "The changing luminosity of the star can be caused by starspots or stellar pulsation.
", "votes": 2, "replies": [] } ] }, { "id": 2965826, "author_name": "Kudaba", "author_url": "", "post_date": "2024-08-21T10:46:14.993000", "content": "It may be that the planet moves faster, however another possible explanation is that the impact parameter is larger
Thank you for sharing @ambrosm -> as transit duration different, is transit depth also different scales? from graph not clear
\n=> is the 435 and 507 => planet ids -> 2758428682, 3109601437 as both belongs to star 0.
\n=> is it not good to see, same graph for each host star.
Hi @seshurajup
\nYour approach to feature engineering is truly innovative!
", "votes": 0, "replies": [] }, { "id": 2955787, "author_name": "Serhii Kravtsov", "author_url": "", "post_date": "2024-08-11T14:10:02.907000", "content": "Good job! Great insight!
\nCan you explain how you determined the start and end timepoints? Did I miss it somewhere in the data or did you somehow determine the imperial timestep for each example?
Hi @serhiikravtsov, I implemented an algorithm which finds the highest step in a noisy time series.
", "votes": 6, "replies": [] } ] }, { "id": 2972982, "author_name": "hoon0303", "author_url": "", "post_date": "2024-08-29T04:17:18.697000", "content": "Thank You for the Valuable Information on Feature Engineering!
", "votes": 0, "replies": [] } ], "raw_markdown_by_id": { "2955143": "Did you notice that not all planets take the same time to pass in front of their host star? Look at the light curves of two extreme planets:\n\n\n\nThe top planet evidently moves faster: it starts its transit later and it finishes earlier than the bottom planet.\n\nIf we plot the start and end times against each other for every planet, we make two observations:\n1. Most transits start around time step 1800 and finish around time step 3800, but there are many exceptions (outliers).\n2. The transits are centered quite well: If a planet starts its transit earlier, it finishes later so that the center of the transit is always near time step 2800.\n\n\n", "2957277": "great job.", "2972406": "Dear all- Joined the challenge lately and still trying to make sense of the data; Does someone know the geometrical, electronical, astronomical, or astrological explanation for the upwards/downwards trends in some the out-of-transit levels? \nAren't they supposed to be completely flat? \nAttached from the host supplied calibration notebook- marked are the trends I'm asking about?\nThanks in advance!", "2965826": "It may be that the planet moves faster, however another possible explanation is that the impact parameter is larger ", "2955190": "Thank you for sharing @ambrosm -> as transit duration different, is transit depth also different scales? from graph not clear\n=> is the 435 and 507 => planet ids -> 2758428682, 3109601437 as both belongs to star 0.\n=> is it not good to see, same graph for each host star.", "2966769": "Your approach to feature engineering is truly innovative!", "2955787": "Good job! Great insight!\nCan you explain how you determined the start and end timepoints? Did I miss it somewhere in the data or did you somehow determine the imperial timestep for each example?", "2972982": "Thank You for the Valuable Information on Feature Engineering!" } }