{
  "total": 159,
  "topics": [
    {
      "id": 23379,
      "title": "Update from the discussion of Kaggle and TalkingData",
      "comment_count": 7,
      "views": 2370,
      "votes": 30
    },
    {
      "id": 23502,
      "title": "Thank you to TalkingData Competitors",
      "comment_count": 1,
      "views": 693,
      "votes": 4
    },
    {
      "id": 23464,
      "title": "Private Leaderboard Final!",
      "comment_count": 4,
      "views": 1016,
      "votes": 2
    },
    {
      "id": 22160,
      "title": "Welcome! 欢迎！",
      "comment_count": 47,
      "views": 8213,
      "votes": 9
    },
    {
      "id": 22188,
      "title": "Benchmark using GraphLab Create",
      "comment_count": 21,
      "views": 5338,
      "votes": 10
    },
    {
      "id": 22172,
      "title": "Please re-download gender_age_train.csv",
      "comment_count": 1,
      "views": 2594,
      "votes": 3
    },
    {
      "id": 22369,
      "title": "ERROR: Column '' was not expected (Line 1, Column 1). Try again or go to submissions page",
      "comment_count": 3,
      "views": 211,
      "votes": 0
    },
    {
      "id": 22582,
      "title": "Is this dataset good for publishing academic papers?",
      "comment_count": 3,
      "views": 482,
      "votes": null
    },
    {
      "id": 28002,
      "title": "Use the dataset for research purposes",
      "comment_count": 3,
      "views": 51,
      "votes": null
    },
    {
      "id": 27999,
      "title": "Is there a good way to predict someone's education level or town size?",
      "comment_count": 5,
      "views": 75,
      "votes": null
    },
    {
      "id": 22575,
      "title": "How do we contact other Kagglers?",
      "comment_count": 3,
      "views": 325,
      "votes": null
    },
    {
      "id": 22673,
      "title": "Regarding binary vectorizer",
      "comment_count": 3,
      "views": 355,
      "votes": null
    },
    {
      "id": 22777,
      "title": "xgb linear parameters",
      "comment_count": 5,
      "views": 800,
      "votes": null
    },
    {
      "id": 22567,
      "title": "Neural network for sparse matrices",
      "comment_count": 11,
      "views": 3131,
      "votes": 2
    },
    {
      "id": 22481,
      "title": "Team",
      "comment_count": 3,
      "views": 190,
      "votes": 1
    },
    {
      "id": 22410,
      "title": "Best single model?",
      "comment_count": 160,
      "views": 25578,
      "votes": 2
    },
    {
      "id": 22428,
      "title": "xgboost in python",
      "comment_count": 11,
      "views": 1504,
      "votes": null
    },
    {
      "id": 22386,
      "title": "How to Group by on Sparse dataframe",
      "comment_count": 1,
      "views": 290,
      "votes": null
    },
    {
      "id": 22848,
      "title": "Kearas / g++ not detected after update Mac to 10.11",
      "comment_count": 3,
      "views": 887,
      "votes": null
    },
    {
      "id": 23424,
      "title": "My approach of single model with 2.234 public LB (without leak)",
      "comment_count": 15,
      "views": 1858,
      "votes": 41
    },
    {
      "id": 23445,
      "title": "5th place solution (Kazanova|Faron) and some thoughts",
      "comment_count": 19,
      "views": 2393,
      "votes": 56
    },
    {
      "id": 23463,
      "title": "Team ensemble's solution + framework",
      "comment_count": 5,
      "views": 1656,
      "votes": 28
    },
    {
      "id": 23358,
      "title": "A deleted account in current #1?",
      "comment_count": 33,
      "views": 4364,
      "votes": 19
    },
    {
      "id": 23465,
      "title": "Some of the 3rd place solution history (Danijel|Matias) ",
      "comment_count": 3,
      "views": 1476,
      "votes": 20
    },
    {
      "id": 23403,
      "title": "Some thoughts on the leak",
      "comment_count": 14,
      "views": 1693,
      "votes": 24
    },
    {
      "id": 23286,
      "title": "you were only supposed to blow the * doors off",
      "comment_count": 154,
      "views": 19968,
      "votes": 29
    },
    {
      "id": 23391,
      "title": "Tribute to fakeplastictrees & Michael Jahrer",
      "comment_count": 4,
      "views": 1147,
      "votes": 31
    },
    {
      "id": 23333,
      "title": "Letter from TalkingData",
      "comment_count": 29,
      "views": 4105,
      "votes": 31
    },
    {
      "id": 23390,
      "title": "No private LB",
      "comment_count": 31,
      "views": 3085,
      "votes": 8
    },
    {
      "id": 23430,
      "title": "What is your best score before leakage on private?",
      "comment_count": 7,
      "views": 693,
      "votes": 4
    },
    {
      "id": 23415,
      "title": "More than one way to win",
      "comment_count": 3,
      "views": 745,
      "votes": 14
    },
    {
      "id": 23325,
      "title": "Moved up 130 places with the leak",
      "comment_count": 5,
      "views": 1068,
      "votes": 22
    },
    {
      "id": 23386,
      "title": "Leaderboard Shakeup Predictions",
      "comment_count": 13,
      "views": 1197,
      "votes": null
    },
    {
      "id": 22309,
      "title": "Submission error",
      "comment_count": 3,
      "views": 492,
      "votes": 1
    },
    {
      "id": 23397,
      "title": "Winners approach",
      "comment_count": 0,
      "views": 500,
      "votes": -1
    },
    {
      "id": 23378,
      "title": "Talk about late bloomer: 10 hours :) ",
      "comment_count": 8,
      "views": 900,
      "votes": null
    },
    {
      "id": 23350,
      "title": "how to mix categorical data with continuous-feature in keras",
      "comment_count": 4,
      "views": 710,
      "votes": null
    },
    {
      "id": 23340,
      "title": "Unique device_id count in events.csv",
      "comment_count": 1,
      "views": 355,
      "votes": null
    },
    {
      "id": 23298,
      "title": "2.15500, seriously?",
      "comment_count": 1,
      "views": 680,
      "votes": null
    },
    {
      "id": 23240,
      "title": "how to choose a good model",
      "comment_count": 9,
      "views": 742,
      "votes": null
    },
    {
      "id": 23264,
      "title": "Stuck  at 0.43x",
      "comment_count": 5,
      "views": 567,
      "votes": -3
    },
    {
      "id": 23100,
      "title": "Does anybody have some ideas with how to deal with events.timestamp?",
      "comment_count": 19,
      "views": 1544,
      "votes": 0
    },
    {
      "id": 23149,
      "title": "Integrating Two Models",
      "comment_count": 1,
      "views": 480,
      "votes": null
    },
    {
      "id": 23143,
      "title": "team merge - got strong xgb model",
      "comment_count": 0,
      "views": 393,
      "votes": 1
    },
    {
      "id": 23118,
      "title": "Imbalanced data: there are far more app_ids than brands, device_models or categories",
      "comment_count": 4,
      "views": 361,
      "votes": 1
    },
    {
      "id": 23122,
      "title": "How long have you cost to calculate the model？",
      "comment_count": 2,
      "views": 383,
      "votes": null
    },
    {
      "id": 23106,
      "title": "Creating an accurate validation set",
      "comment_count": 3,
      "views": 297,
      "votes": null
    },
    {
      "id": 23088,
      "title": "For tree model, is it helpful to build one-hot-encoding?",
      "comment_count": 1,
      "views": 373,
      "votes": 1
    },
    {
      "id": 23093,
      "title": "Missing Columns In Test Data",
      "comment_count": 2,
      "views": 308,
      "votes": null
    },
    {
      "id": 22965,
      "title": "How to include longitude and latitude in the modelling phase",
      "comment_count": 13,
      "views": 1497,
      "votes": 1
    },
    {
      "id": 23048,
      "title": "Demystifying common sense and external data",
      "comment_count": 1,
      "views": 339,
      "votes": 1
    },
    {
      "id": 23032,
      "title": "stacking vs. blending",
      "comment_count": 4,
      "views": 800,
      "votes": 1
    },
    {
      "id": 23040,
      "title": "How to use TSNE",
      "comment_count": 0,
      "views": 244,
      "votes": 0
    },
    {
      "id": 23036,
      "title": "Only a fraction of devices have an event?",
      "comment_count": 1,
      "views": 300,
      "votes": null
    },
    {
      "id": 23016,
      "title": "Timezone for event timestamps?",
      "comment_count": 3,
      "views": 393,
      "votes": null
    },
    {
      "id": 23025,
      "title": "Lat/lon to locations details",
      "comment_count": 2,
      "views": 505,
      "votes": null
    },
    {
      "id": 23010,
      "title": "The Heavy Data Files",
      "comment_count": 2,
      "views": 379,
      "votes": 1
    },
    {
      "id": 22517,
      "title": "What is the greatest challenge of this competition?  Share your thoughts :)",
      "comment_count": 4,
      "views": 1130,
      "votes": null
    },
    {
      "id": 22989,
      "title": "Decision tree visualization in python",
      "comment_count": 3,
      "views": 568,
      "votes": null
    },
    {
      "id": 22993,
      "title": "Active Events Count and Age Relation",
      "comment_count": 1,
      "views": 353,
      "votes": 1
    },
    {
      "id": 22868,
      "title": "no iphone/Apple in China?",
      "comment_count": 2,
      "views": 378,
      "votes": null
    },
    {
      "id": 22885,
      "title": "Good for beginners: Problem explanation, visualisation and model building in R ~ 2.2654",
      "comment_count": 4,
      "views": 689,
      "votes": 1
    },
    {
      "id": 22817,
      "title": "Help w/visualizing features & validity of proposed feature",
      "comment_count": 1,
      "views": 374,
      "votes": 1
    },
    {
      "id": 22882,
      "title": "it says that the device_id is 1.00E+18 when i submit,so there is an error.How to solve this? ",
      "comment_count": 4,
      "views": 359,
      "votes": null
    },
    {
      "id": 22522,
      "title": "A bug when in xgboost handling CSR matrix",
      "comment_count": 4,
      "views": 977,
      "votes": null
    },
    {
      "id": 22871,
      "title": "Why so many people scored 2.246072 in LB?",
      "comment_count": 2,
      "views": 834,
      "votes": null
    },
    {
      "id": 22863,
      "title": "MXNET in R",
      "comment_count": 1,
      "views": 499,
      "votes": 1
    },
    {
      "id": 22865,
      "title": "How to set samples_per_epoch in keras fit_generator",
      "comment_count": 0,
      "views": 645,
      "votes": 2
    },
    {
      "id": 22223,
      "title": "hi, merge giving 74839 rows",
      "comment_count": 9,
      "views": 1013,
      "votes": 5
    },
    {
      "id": 22787,
      "title": "Public scripts ",
      "comment_count": 11,
      "views": 966,
      "votes": 4
    },
    {
      "id": 22158,
      "title": "non-unique device_id",
      "comment_count": 38,
      "views": 5454,
      "votes": 5
    },
    {
      "id": 22801,
      "title": "time series classification",
      "comment_count": 0,
      "views": 323,
      "votes": 0
    },
    {
      "id": 22413,
      "title": "R workbook for feature extraction, XGBoost training, grid search, bayesian optimization, score ~2.347",
      "comment_count": 3,
      "views": 1343,
      "votes": 16
    },
    {
      "id": 22507,
      "title": "External Data - Devices' Description",
      "comment_count": 2,
      "views": 500,
      "votes": 8
    },
    {
      "id": 22716,
      "title": "get_map error",
      "comment_count": 1,
      "views": 199,
      "votes": 1
    },
    {
      "id": 22210,
      "title": "Understanding app_events dataset",
      "comment_count": 4,
      "views": 1047,
      "votes": 7
    },
    {
      "id": 22354,
      "title": "Out of memory when read \"app_events.csv\"",
      "comment_count": 10,
      "views": 895,
      "votes": 1
    },
    {
      "id": 22741,
      "title": "Merging of csv files",
      "comment_count": 2,
      "views": 302,
      "votes": 2
    },
    {
      "id": 22191,
      "title": "External data - geography of China",
      "comment_count": 17,
      "views": 1870,
      "votes": 2
    },
    {
      "id": 22270,
      "title": "Do brand and phone names really matter?",
      "comment_count": 13,
      "views": 2004,
      "votes": 0
    },
    {
      "id": 22744,
      "title": "A question about stacking",
      "comment_count": 0,
      "views": 268,
      "votes": 1
    },
    {
      "id": 22740,
      "title": "Is there any way to find Multivariate Standard Deviation",
      "comment_count": 4,
      "views": 319,
      "votes": null
    },
    {
      "id": 22710,
      "title": "Can't win prize if used open-source library?",
      "comment_count": 3,
      "views": 657,
      "votes": 3
    },
    {
      "id": 22735,
      "title": "Chinese language not displaying",
      "comment_count": 0,
      "views": 180,
      "votes": 0
    },
    {
      "id": 22692,
      "title": "fake GPS coordinates in Events.csv",
      "comment_count": 4,
      "views": 512,
      "votes": null
    },
    {
      "id": 22382,
      "title": "Error in submitting",
      "comment_count": 4,
      "views": 440,
      "votes": 2
    },
    {
      "id": 22671,
      "title": "Anyone  using age and gender as meta features",
      "comment_count": 0,
      "views": 368,
      "votes": 0
    },
    {
      "id": 22653,
      "title": "what's the reason of that a lot of events have no app_event?",
      "comment_count": 0,
      "views": 294,
      "votes": 0
    },
    {
      "id": 22633,
      "title": "Mahout Spark Shell on Cloud",
      "comment_count": 2,
      "views": 312,
      "votes": null
    },
    {
      "id": 22635,
      "title": "Prediction",
      "comment_count": 1,
      "views": 292,
      "votes": null
    },
    {
      "id": 22622,
      "title": "No Match for Train Data Device ID",
      "comment_count": 1,
      "views": 299,
      "votes": null
    },
    {
      "id": 22231,
      "title": "Can I know  exact chinses code page in \"phone_brand_device_model.csv\"",
      "comment_count": 5,
      "views": 669,
      "votes": null
    },
    {
      "id": 22204,
      "title": "Valid Location Data?",
      "comment_count": 5,
      "views": 728,
      "votes": 4
    },
    {
      "id": 22601,
      "title": "Need help merging the csv files",
      "comment_count": 7,
      "views": 490,
      "votes": null
    },
    {
      "id": 22602,
      "title": "Need help merging the csv files",
      "comment_count": 0,
      "views": 201,
      "votes": 0
    },
    {
      "id": 22584,
      "title": "Preprocessing Data",
      "comment_count": 2,
      "views": 545,
      "votes": null
    },
    {
      "id": 22568,
      "title": "Missing device_ids?",
      "comment_count": 2,
      "views": 468,
      "votes": null
    },
    {
      "id": 22569,
      "title": "vowpal wabbit multiple passes error",
      "comment_count": 10,
      "views": 659,
      "votes": null
    },
    {
      "id": 22570,
      "title": "What is the correct approach for Cross Validation",
      "comment_count": 1,
      "views": 361,
      "votes": null
    },
    {
      "id": 22574,
      "title": "beginners mistake of the week",
      "comment_count": 0,
      "views": 389,
      "votes": 1
    },
    {
      "id": 22451,
      "title": "Vismio gender/age/phone/brand Visualisaition",
      "comment_count": 3,
      "views": 1008,
      "votes": 3
    },
    {
      "id": 22542,
      "title": "Adding numeric colums to a sparse matrix",
      "comment_count": 2,
      "views": 314,
      "votes": null
    },
    {
      "id": 22547,
      "title": "Information about the data.",
      "comment_count": 1,
      "views": 387,
      "votes": -2
    },
    {
      "id": 22540,
      "title": "Adding numeric colums to a sparse matrix",
      "comment_count": 1,
      "views": 196,
      "votes": null
    },
    {
      "id": 22541,
      "title": "Adding numeric colums to a sparse matrix",
      "comment_count": 0,
      "views": 141,
      "votes": -1
    },
    {
      "id": 22425,
      "title": "Using multitask dl structure",
      "comment_count": 5,
      "views": 1222,
      "votes": 6
    },
    {
      "id": 22528,
      "title": "Question about app_labels.csv",
      "comment_count": 1,
      "views": 293,
      "votes": null
    },
    {
      "id": 22524,
      "title": "Creating a matrix (event ~ app_id) for app_events in python",
      "comment_count": 2,
      "views": 400,
      "votes": null
    },
    {
      "id": 22515,
      "title": "No similar device_id between train and test?",
      "comment_count": 1,
      "views": 312,
      "votes": null
    },
    {
      "id": 22482,
      "title": "How the device_id generated?",
      "comment_count": 5,
      "views": 681,
      "votes": null
    },
    {
      "id": 22516,
      "title": "not all phone_brand translation exist in English",
      "comment_count": 1,
      "views": 362,
      "votes": null
    },
    {
      "id": 22504,
      "title": "How to generate data for modelling",
      "comment_count": 0,
      "views": 216,
      "votes": -1
    },
    {
      "id": 22174,
      "title": "label_categories.csv",
      "comment_count": 1,
      "views": 592,
      "votes": 3
    },
    {
      "id": 22421,
      "title": "Looking for a teammate",
      "comment_count": 13,
      "views": 858,
      "votes": null
    },
    {
      "id": 22443,
      "title": "xgb.DMatrix error",
      "comment_count": 2,
      "views": 411,
      "votes": 1
    },
    {
      "id": 22440,
      "title": "Classification of trees",
      "comment_count": 3,
      "views": 687,
      "votes": null
    },
    {
      "id": 22385,
      "title": "\"app_id\" when merge reduce observations",
      "comment_count": 4,
      "views": 536,
      "votes": null
    },
    {
      "id": 22430,
      "title": "mobile-audience-targeting-101",
      "comment_count": 0,
      "views": 216,
      "votes": 0
    },
    {
      "id": 22372,
      "title": "Looking for a PySpark teammate",
      "comment_count": 2,
      "views": 391,
      "votes": null
    },
    {
      "id": 22186,
      "title": "Chinese brands",
      "comment_count": 11,
      "views": 2536,
      "votes": 14
    },
    {
      "id": 22367,
      "title": "Predicting age and gender separately.",
      "comment_count": 4,
      "views": 836,
      "votes": 6
    },
    {
      "id": 22409,
      "title": "Is the events table complete?",
      "comment_count": 1,
      "views": 402,
      "votes": null
    },
    {
      "id": 22379,
      "title": "Looking for teammate",
      "comment_count": 4,
      "views": 553,
      "votes": 0
    },
    {
      "id": 22362,
      "title": "is_installed and is_active columns",
      "comment_count": 8,
      "views": 780,
      "votes": 1
    },
    {
      "id": 22363,
      "title": "Group by for multiple columns in python",
      "comment_count": 5,
      "views": 420,
      "votes": null
    },
    {
      "id": 22366,
      "title": "The script was killed, likely for trying to exceed the memory limit of 8192M",
      "comment_count": 0,
      "views": 208,
      "votes": -1
    },
    {
      "id": 22364,
      "title": "Events not present for all data",
      "comment_count": 0,
      "views": 238,
      "votes": 1
    },
    {
      "id": 22228,
      "title": "Device_ID in test data file",
      "comment_count": 4,
      "views": 573,
      "votes": null
    },
    {
      "id": 22358,
      "title": "Phone_brand_device_model Chinese can be read- CSV file",
      "comment_count": 0,
      "views": 302,
      "votes": 0
    },
    {
      "id": 22357,
      "title": "Phone_brand_device_model with Chinese CSV file",
      "comment_count": 0,
      "views": 148,
      "votes": 0
    },
    {
      "id": 22226,
      "title": "ram issue with using R",
      "comment_count": 16,
      "views": 1161,
      "votes": 1
    },
    {
      "id": 22278,
      "title": "DataSet -> DB",
      "comment_count": 9,
      "views": 770,
      "votes": null
    },
    {
      "id": 22337,
      "title": "Looking  for  team  member",
      "comment_count": 0,
      "views": 244,
      "votes": 0
    },
    {
      "id": 22332,
      "title": "Any tips and suggestions to speed up the training?",
      "comment_count": 3,
      "views": 481,
      "votes": null
    },
    {
      "id": 22264,
      "title": "R and 64-bit non-ordinal (trick + 500MB free space)",
      "comment_count": 2,
      "views": 482,
      "votes": 3
    },
    {
      "id": 22216,
      "title": "Try to understanding label ids",
      "comment_count": 8,
      "views": 1071,
      "votes": null
    },
    {
      "id": 22329,
      "title": "error in importing data file ",
      "comment_count": 0,
      "views": 213,
      "votes": 0
    },
    {
      "id": 22317,
      "title": "R multiclass log loss code",
      "comment_count": 0,
      "views": 576,
      "votes": 2
    },
    {
      "id": 22307,
      "title": "What is the configuration of the machine people are using for this competition?",
      "comment_count": 2,
      "views": 391,
      "votes": -1
    },
    {
      "id": 22280,
      "title": "Device_id Question",
      "comment_count": 9,
      "views": 801,
      "votes": null
    },
    {
      "id": 22269,
      "title": "python code for evalulating score",
      "comment_count": 5,
      "views": 564,
      "votes": null
    },
    {
      "id": 22267,
      "title": "Do all the row`s \"is_installed\" column value is 1 in app_event.csv?",
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      "views": 370,
      "votes": 1
    },
    {
      "id": 22296,
      "title": "Issue with submission",
      "comment_count": 0,
      "views": 168,
      "votes": 0
    },
    {
      "id": 22290,
      "title": "Data duplicates",
      "comment_count": 2,
      "views": 409,
      "votes": null
    },
    {
      "id": 22284,
      "title": "Devices in events",
      "comment_count": 1,
      "views": 322,
      "votes": null
    },
    {
      "id": 22283,
      "title": "Getting number of coefficients as 3793053",
      "comment_count": 1,
      "views": 189,
      "votes": -1
    },
    {
      "id": 22255,
      "title": "Mapping events and app_events",
      "comment_count": 6,
      "views": 635,
      "votes": null
    },
    {
      "id": 22281,
      "title": "Ploting Events using Lonitude and Latitude using R",
      "comment_count": 0,
      "views": 236,
      "votes": 1
    },
    {
      "id": 22276,
      "title": "translate brand name",
      "comment_count": 1,
      "views": 437,
      "votes": null
    },
    {
      "id": 22181,
      "title": "only 23309 samples having app events in 74645 training samples?",
      "comment_count": 2,
      "views": 881,
      "votes": 7
    },
    {
      "id": 22236,
      "title": "App_ID Not matching across tables",
      "comment_count": 2,
      "views": 404,
      "votes": null
    },
    {
      "id": 22167,
      "title": "Age groups",
      "comment_count": 2,
      "views": 1368,
      "votes": 8
    },
    {
      "id": 22238,
      "title": "Clarification",
      "comment_count": 2,
      "views": 404,
      "votes": null
    },
    {
      "id": 22199,
      "title": "Days ",
      "comment_count": 5,
      "views": 585,
      "votes": null
    },
    {
      "id": 22222,
      "title": "Events and app musing",
      "comment_count": 0,
      "views": 343,
      "votes": 0
    },
    {
      "id": 22179,
      "title": "Unique Phone brands",
      "comment_count": 3,
      "views": 667,
      "votes": null
    },
    {
      "id": 22166,
      "title": "Only 75,000 rows",
      "comment_count": 1,
      "views": 937,
      "votes": 4
    },
    {
      "id": 22201,
      "title": "Error in submitting",
      "comment_count": 1,
      "views": 255,
      "votes": null
    },
    {
      "id": 22164,
      "title": "sangsung",
      "comment_count": 2,
      "views": 909,
      "votes": null
    }
  ],
  "errors": []
}