bloom | Go package implementing Bloom filters | Hashing library
kandi X-RAY | bloom Summary
kandi X-RAY | bloom Summary
A Bloom filter is a representation of a set of n items, where the main requirement is to make membership queries; i.e., whether an item is a member of a set. A Bloom filter has two parameters: m, a maximum size (typically a reasonably large multiple of the cardinality of the set to represent) and k, the number of hashing functions on elements of the set. (The actual hashing functions are important, too, but this is not a parameter for this implementation). A Bloom filter is backed by a BitSet; a key is represented in the filter by setting the bits at each value of the hashing functions (modulo m). Set membership is done by testing whether the bits at each value of the hashing functions (again, modulo m) are set. If so, the item is in the set. If the item is actually in the set, a Bloom filter will never fail (the true positive rate is 1.0); but it is susceptible to false positives. The art is to choose k and m correctly. In this implementation, the hashing functions used is murmurhash, a non-cryptographic hashing function.
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bloom Examples and Code Snippets
Lines of Code : 6License : Non-SPDX
Copydef put(key):
# depending on the hash function,
# and the bloom filter size, many
# keys might collide
slot = hash(key) % len(bloom)
bloom[slot] = 1 def seen(key):
slot = hash(key) % len(bloom)
return bloom[slot] == 1 Community Discussions
Trending Discussions on bloom
QUESTION
print(df.sample(50)):
match_datetime country league home_team away_team home_odds draw_odds away_odds run_time home_score away_score
72170 2021-10-17 12:30:00 Ukraine Persha Liga Alliance Uzhhorod 1.22 5.62 9.71 2021-10-17 09:22:20.212731 NaN NaN
100398 2021-11-02 14:35:00 Saudi Arabia Division 1 Al Qadisiya Bisha 1.61 3.61 4.94 2021-11-02 09:13:18.768604 2.0 1.0
33929 2021-09-11 23:00:00 Panama LPF Veraguas Plaza Amador 2.75 2.75 2.71 2021-09-10 23:47:54.682982 1.0 1.0
12328 2021-08-15 15:30:00 Poland Ekstraklasa Slask Wroclaw Leczna 1.74 3.74 4.59 2021-08-14 22:44:26.136608 0.0 0.0
81500 2021-10-24 13:00:00 Italy Serie D - Group A Caronnese Saluzzo 1.69 3.60 4.28 2021-10-23 13:37:16.920175 2.0 2.0
143370 2021-12-05 14:00:00 Poland Division 1 Chrobry Glogow Widzew Lodz 3.36 3.17 2.15 2021-11-30 17:40:24.833519 0.0 0.0
175061 2022-01-08 18:00:00 Spain Primera RFEF - Group 1 R. Union Extremadura UD 1.26 4.40 18.00 2022-01-08 17:00:46.662761 0.0 1.0
21293 2021-08-29 16:00:00 Italy Serie B Cittadella Crotone 2.32 3.11 3.31 2021-08-26 18:04:46.221393 4.0 2.0
97427 2021-11-01 17:00:00 Israel Leumit League M. Nazareth Beitar Tel Aviv 1.92 3.26 3.75 2021-10-30 09:40:08.966330 4.0 2.0
177665 2022-01-13 12:30:00 Egypt Division 2 - Group C Said El Mahalla Al Magd 4.12 3.08 1.94 2022-01-12 17:53:33.570126 0.0 0.0
69451 2021-10-17 05:00:00 South Korea K League 1 Gangwon Gwangju FC 2.06 3.38 3.65 2021-10-15 09:55:54.578112 NaN NaN
4742 2021-08-10 20:30:00 Peru Liga 2 Deportivo Coopsol Grau 3.14 3.49 2.06 2021-08-10 18:14:01.996860 0.0 2.0
22266 2021-08-29 13:00:00 France Ligue 1 Angers Rennes 2.93 3.27 2.56 2021-08-27 12:26:34.904374 2.0 0.0
46412 2021-09-26 04:00:00 Japan J2 League Okayama Blaublitz 2.24 2.90 3.63 2021-09-23 09:08:26.979783 1.0 1.0
133207 2021-11-27 21:15:00 Bolivia Division Profesional Palmaflor Blooming 1.51 4.05 5.10 2021-11-25 18:22:28.275844 3.0 0.0
140825 2021-11-28 11:00:00 Spain Tercera RFEF - Group 6 Valencia B Torrellano 1.58 3.56 5.26 2021-11-28 19:54:40.066637 2.0 0.0
226985 2022-03-04 00:30:00 Argentina Copa de la Liga Profesional Central Cordoba Rosario Central 2.36 3.26 2.86 2022-03-02 17:23:10.014424 0.0 1.0
137226 2021-11-28 12:45:00 Greece Super League 2 Apollon Pontou PAOK B 3.37 3.25 2.01 2021-11-27 15:13:05.937815 0.0 3.0
182756 2022-01-22 10:30:00 Turkey 1. Lig Umraniyespor Menemenspor 1.40 4.39 7.07 2022-01-19 17:25:27.128331 2.0 1.0
89895 2021-10-28 16:45:00 Netherlands KNVB Beker Ajax Cambuur 9.10 5.55 1.26 2021-10-27 07:46:56.253996 0.0 5.0
227595 2022-03-06 17:00:00 Israel Ligat ha'Al Ashdod Maccabi Petah Tikva 2.30 3.21 3.05 2022-03-02 17:23:10.014424 NaN NaN
57568 2021-10-02 13:00:00 Estonia Meistriliiga Kalju Legion 1.58 4.10 4.84 2021-10-02 10:55:35.287359 2.0 2.0
227035 2022-03-04 19:00:00 Denmark Superliga FC Copenhagen Randers FC 1.70 3.84 5.06 2022-03-02 17:23:10.014424 NaN NaN
108668 2021-11-07 13:30:00 Germany Oberliga Mittelrhein Duren Freialdenhoven 1.35 5.20 6.35 2021-11-06 17:37:37.629603 2.0 0.0
86270 2021-10-25 18:00:00 Belgium Pro League U21 Lommel SK U21 Lierse K. U21 3.23 3.84 1.92 2021-10-26 01:22:31.111441 0.0 0.0
89437 2021-11-01 02:10:00 Colombia Primera A America De Cali Petrolera 1.86 2.92 4.60 2021-10-27 07:41:24.427246 NaN NaN
13986 2021-08-21 13:00:00 France Ligue 2 Dijon Toulouse 3.92 3.51 1.94 2021-08-16 13:22:02.749887 2.0 4.0
105179 2021-11-06 15:00:00 England NPL Premier Division Atherton South Shields 3.90 3.42 1.82 2021-11-05 10:01:28.567328 1.0 1.0
142821 2021-12-01 12:30:00 Bulgaria Vtora liga Marek Septemvri Simitli 1.79 3.38 4.35 2021-11-30 17:40:24.833519 2.0 2.0
45866 2021-09-24 00:30:00 Venezuela Primera Division Dep. Tachira Portuguesa 1.96 3.60 3.22 2021-09-23 09:08:26.979783 4.0 1.0
76100 2021-10-22 16:30:00 Denmark 1st Division Hvidovre IF Koge 1.91 3.56 3.81 2021-10-21 08:43:12.445245 NaN NaN
115896 2021-11-14 16:00:00 Spain Tercera RFEF - Group 6 Olimpic Xativa Torrellano 2.78 2.89 2.39 2021-11-13 12:21:45.955738 1.0 0.0
156159 2021-12-12 16:00:00 Spain Segunda RFEF - Group 1 Marino de Luanco Coruxo FC 2.19 3.27 3.07 2021-12-10 09:26:45.001977 0.0 0.0
18240 2021-08-21 12:00:00 Germany Regionalliga West Rodinghausen Fortuna Koln 3.25 3.60 2.00 2021-08-21 03:30:43.193978 NaN NaN
184913 2022-01-22 10:00:00 World Club Friendly Zilina B Trinec 3.56 4.14 1.78 2022-01-22 16:44:32.650325 0.0 3.0
16782 2021-08-22 23:05:00 Colombia Primera A Petrolera Dep. Cali 3.01 3.00 2.44 2021-08-19 18:24:24.966505 2.0 3.0
63847 2021-10-10 09:30:00 Spain Tercera RFEF - Group 7 Carabanchel RSD Alcala 4.39 3.42 1.75 2021-10-09 12:03:50.720013 NaN NaN
7254 2021-08-12 16:45:00 Europe Europa Conference League Hammarby Cukaricki 1.72 3.87 4.13 2021-08-11 23:48:31.958394 NaN NaN
82727 2021-10-24 14:00:00 Lithuania I Lyga Zalgiris 2 Neptunas 1.76 3.78 3.35 2021-10-24 12:02:06.306279 1.0 3.0
43074 2021-09-22 18:00:00 Ukraine Super Cup Shakhtar Donetsk Dyn. Kyiv 2.57 3.49 2.59 2021-09-19 09:39:56.624504 NaN NaN
65187 2021-10-11 18:45:00 World World Cup Norway Montenegro 1.56 4.17 6.28 2021-10-11 10:56:09.973470 NaN NaN
120993 2021-11-18 00:00:00 USA NISA Maryland Bobcats California Utd. 2.76 3.23 2.39 2021-11-17 20:36:26.562731 1.0 1.0
201469 2022-02-12 15:00:00 England League One AFC Wimbledon Sunderland 3.30 3.48 2.17 2022-02-10 17:47:36.501159 1.0 1.0
142180 2021-12-01 19:45:00 Scotland Premiership St. Mirren Ross County 2.06 3.25 3.85 2021-11-29 18:28:22.249662 0.0 0.0
4681 2021-08-10 18:30:00 Europe Champions League Young Boys CFR Cluj 1.48 4.29 6.92 2021-08-10 18:14:01.996860 3.0 1.0
67321 2021-10-17 13:00:00 Spain LaLiga Rayo Vallecano Elche 1.78 3.64 4.99 2021-10-13 11:22:34.979378 NaN NaN
27499 2021-09-04 14:00:00 Iceland Inkasso-deildin Kordrengir Fjolnir 2.18 3.66 2.82 2021-09-02 23:28:49.414126 1.0 4.0
48962 2021-09-25 21:00:00 Mexico Liga Premier Serie B Uruapan Lobos Huerta 1.83 3.69 3.70 2021-09-25 13:02:58.238466 NaN NaN
65636 2021-10-16 17:00:00 Switzerland Super League Young Boys Luzern 1.26 6.04 9.43 2021-10-11 10:56:09.973470 NaN NaN
17333 2021-08-21 14:00:00 Finland Kakkonen Group A Atlantis Kiffen 1.57 4.29 4.42 2021-08-20 12:41:03.159846 1.0 1.0
ANSWER
Answered 2022-Mar-05 at 01:38If I understand correctly, you would like to filter the dataframe to retain, for each run_time, the last two rows (or up to two rows) by match_datetime.
Simplified answer
This can be done relatively easily without any join, using GroupBy.tail(). (Note, my original answer was using GroupBy.rank(), but this is simpler, although slower):
QUESTION
I am trying to send an automated email to various users with the lake that they are subscribed to changing:
...ANSWER
Answered 2022-Feb-08 at 03:28Righto - there's no need to keep digging back into subscriber_dict. Instead of:
QUESTION
Is it possible to deploy a Delta Lake instance locally (i.e., using delta-io) with the advanced features such as Z-ordering or Bloom filters?
As far as I have seen, most of these features are only available through Delta Lake on Databricks via the dbr cli. None of these features are mentioned in the docs of the OSS version.
...ANSWER
Answered 2022-Feb-03 at 13:16Unfortunately it's not possible - these features are Databricks only as of right now.
Update on 03.02.2022: Just published roadmap for H1 2022 includes implementation of some of the advanced features into the open source version
QUESTION
I have the following dataset:
...ANSWER
Answered 2022-Jan-21 at 12:54You were close:
QUESTION
I Am New To Ursana Engine And I Don't Know It Properly. But I Can Make Games In It. But The Problem Is That My Game Doesn't Have Any . So My Game Looks Dead.
Is There Any Way To Make My Game Look Good Using In Ursana Engine?
...ANSWER
Answered 2021-Dec-11 at 20:32You have to add lights and also apply lit_with_shadows_shader to entities that will receive shadow.
See more here: https://www.ursinaengine.org/cheat_sheet.html#DirectionalLight
QUESTION
I trying to create a bloom effect for my vulkan game-engine. To implement this I use several bulring pass, in each one I read from one image and render/write a slightly more blurry picture to a other. After each draw pass i swap the role of these images(And using barriers), That means - the one was a render target became a shader resource and the one used as a shader resource became a target. I bind both of these images on same descriptor set to save unnecessary 'VkBindDescriptorSet' calls, but the validation layer tell me that if I want to bind a descriptors of images those all image's layout must be 'VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL' even if the shader used/read only from one of them at any given time(The shader read only from The one that currently in the 'VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL' state). Is this over-caution of the validationlayer? or the bindung is actually failed.
When i worked with DirectX12 I not had this debuger isue!
I would be happy for an answer or an idea for a solution, and I am sorry about my English.
...ANSWER
Answered 2022-Jan-13 at 03:08Assuming your shader actually doesn't use the sampler when its image is bound to it, the validation layer is incorrect (not that it can know). The Vulkan standard only requires that the attached image subresources are not used:
Image subresources used as attachments in the current render pass must not be accessed in any way other than as an attachment by [a rendering command], ...
"Access" is defined by the Vulkan memory model, which for a bound image, involves invoking an image access command. So long as you don't do that to the descriptor, it is not "accessed", and thus does not violate this rule.
That being said, ping-ponging between images without using input attachments requires stopping and starting a render pass, not to mention the execution barriers between each pass. The cost of VkBindDescriptorSet will be a rounding error in your GPU profiling data next to all of that.
So you should just change descriptor sets and shut the validation layer up.
QUESTION
I am trying to connect a Flutter app to gRPC server. It used to work fine in my older laptop, but now I always get this error when I try to make a request to an endpoint:
...ANSWER
Answered 2021-Dec-29 at 17:47After several hours of trial and error, I finally figured out what the problem was, it like many other bugs it turned out to be a stupid one. The order of the tags in the proto file's message has been changed (a new field was added at the top and all of the other fields were pushed downward). The server was using the new definition, while the client was using the old one. When the client tried to call an endpoint, the tags did not match.
All I had to do is re-generate the files for the client stub.
QUESTION
I am using https://arrows.app/ to create a basic network:
And the resulting GraphQL it creates is:
...ANSWER
Answered 2021-Dec-28 at 01:25One thing you could do is define your schema the following way:
QUESTION
I've currently noticed that, if i uncheck the "is Global" checkbox on the Bloom Effect of a Post Processing Volume, even thought I adjusted my layer to affect one in particular, the Bloom doesnt apply to that layer I've set in the P-p layer. In fact, it doesn't apply at all. Either it sets bloom for everything in the scene, or it doesn't.
Extras: I have no Pipeline asset, maybe thats the issue, but I've tried to setting one LRP (because for some reason URP in my 2019.2.17f1 version doenst exist) and it just breaks all my materials that i use for Particle Systems (Particles/Standard Unlit) even if i upgrade them for LRP materials.
Any ideas? If it's possible to deliver a solution to both these problems excellent, but the main one is the title question.
...ANSWER
Answered 2021-Dec-17 at 22:39The is global might sound confusing at first. Ultimately it does not mean where to apply the post processing effect, but when to apply the effect. If it is set to Global, it will always be applied, otherwise you can set a layer and a border that triggers the effect.
The general approach is to only set emission to materials where you want the effect to take place. If your Materials are to dark otherwise you should adjust the ambient lighting settings.
Atleast in URP there are some work arounds for older versions like this, but afaik this does not work in 2020.3 since they made some changes on URP and the camera system.
edit: on the video Chris Hull Chris Hull game an answer for how to do it with the new system
@Mezzanine Add your actual game objects to a created bloom layer. Create two cameras and set one of them to cull everything except that bloom layer you made. Set the other to only cull the bloom layer. Then you can set your camera to overlay and it will be added to the other. You can then use separate post process stacks on these cameras. Note that you can only bloom objects in the background with this technique as if you add bloom to an overlay camera, for some reason it just adds bloom to everything rather than just the things in that camera view. Doesn't make much sense and makes the purpose of the layers redundant in my opinion. If you can find a way to add post process to the overlay camera before it is added to the final image, to do let me know.
i have not tested that yet, but i presume it's still valid.
QUESTION
I want to programmatically detect whenever someone sends Bitcoin to some address. This happens on a local testnet which I start using this docker-compose.yml file.
Once the local testnet runs, I create a new address using
...ANSWER
Answered 2021-Nov-18 at 19:39I haven't tested your full setup with electrumx and the ethereum stuff present in your docker-compose file, but regarding your problem, the following steps worked properly, and I think it will do as well in your complete setup.
I ran with docker a bitcoin node based in the ulamlabs/bitcoind-custom-regtest:latest image you provided:
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