Chanchal Chatterjee

22 papers A* 1B 1Journal 16Unranked 4
YearRankTypeTitle / Venue / Authors
2019 J jnl
3D Conditional Generative Adversarial Networks to enable large-scale seismic image enhancement.
CoRR
Praneet Dutta, Bruce Power, Adam Halpert, Carlos Ezequiel, Aravind Subramanian, Chanchal Chatterjee, Sindhu Hari, Kenton Prindle, Vishal Vaddina, Andrew Leach, Raj Domala, Laura Bandura, Massimo Mascaro
2005 J jnl
Adaptive algorithms for first principal eigenvector computation.
Neural Networks
Chanchal Chatterjee
2000 J jnl
Algorithms for accelerated convergence of adaptive PCA.
IEEE Trans. Neural Networks Learn. Syst.
Chanchal Chatterjee, Zhengjiu Kang, Vwani P. Roychowdhury
2000 J jnl
Algorithms for coplanar camera calibration.
Mach. Vis. Appl.
Chanchal Chatterjee, Vwani P. Roychowdhury
2000 J jnl
An adaptive quasi-Newton algorithm for eigensubspace estimation.
IEEE Trans. Signal Process.
Zhengjiu Kang, Chanchal Chatterjee, Vwani P. Roychowdhury
2000 J jnl
Reduced-dimension blind space-time 2-D RAKE receivers for DS-CDMA communication systems.
IEEE Trans. Signal Process.
Yung-Fang Chen, Michael D. Zoltowski, Javier Ramos, Chanchal Chatterjee, Vwani P. Roychowdhury
1999 B conf
Adaptive algorithms for accelerated PCA from an augmented Lagrangian cost function.
IJCNN
Chanchal Chatterjee, Zhengjiu Kang, Vwani P. Roychowdhury
1998 J jnl
On hetero-associative neural networks and adaptive interference cancellation.
IEEE Trans. Signal Process.
Chanchal Chatterjee, Vwani P. Roychowdhury
1998 J jnl
On relative convergence properties of principal component analysis algorithms.
IEEE Trans. Neural Networks
Chanchal Chatterjee, Vwani P. Roychowdhury, Edwin K. P. Chong
1997 J jnl
A Nonlinear Gauss-Seidel Algorithm for Noncoplanar and Coplanar Camera Calibration with Convergence Analysis.
Comput. Vis. Image Underst.
Chanchal Chatterjee, Vwani P. Roychowdhury, Edwin K. P. Chong
1997 J jnl
An Adaptive Stochastic Approximation Algorithm for Simultaneous Diagonalization of Matrix Sequences With Applications.
IEEE Trans. Pattern Anal. Mach. Intell.
Chanchal Chatterjee, Vwani P. Roychowdhury
1997 — conf
Convergence study of principal component analysis algorithms.
ICNN
Chanchal Chatterjee, Vwani P. Roychowdhury, Edwin K. P. Chong
1997 J jnl
Efficient algorithms for finding the centers of conics and quadrics in noisy data.
Pattern Recognit.
Chanchal Chatterjee, Edwin K. P. Chong
1997 J jnl
On self-organizing algorithms and networks for class-separability features.
IEEE Trans. Neural Networks
Chanchal Chatterjee, Vwani P. Roychowdhury
1997 J jnl
Self-organizing algorithms for generalized eigen-decomposition.
IEEE Trans. Neural Networks
Chanchal Chatterjee, Vwani P. Roychowdhury, Javier Ramos, Michael D. Zoltowski
1996 J jnl
An efficient contrast-enhancement method using the analog to digital converter.
Mach. Vis. Appl.
Chanchal Chatterjee, Vwani P. Roychowdhury
1996 J jnl
Models and algorithms for a real-time hybrid image enhancement methodology.
Pattern Recognit.
Chanchal Chatterjee, Vwani P. Roychowdhury
1996 — conf
Self-Organizing and Adaptive Algorithms for Generalized Eigen-Decomposition.
NIPS
Chanchal Chatterjee, Vwani P. Roychowdhury
1996 — conf
Self-organizing neural networks for class-separability features.
ICNN
Chanchal Chatterjee, Vwani P. Roychowdhury
1996 — conf
Statistical risk analysis for classification and feature extraction by multilayer perceptrons.
ICNN
Chanchal Chatterjee, Vwani P. Roychowdhury
1993 A* conf
Efficient and robust methods of accurate camera calibration.
CVPR
Chanchal Chatterjee, Vwani P. Roychowdhury
1987 J jnl
Estimation of close sinusoids in colored noise and model discrimination.
IEEE Trans. Acoust. Speech Signal Process.
Chanchal Chatterjee, Rangasami L. Kashyap, Giridhar Boray
notebooks/redb-clickhouse-TEST.ipynb
← Index notebooks/redb-clickhouse-TEST.ipynb plaintext
Truncated preview: showing the first 16384 bytes out of 5988848 total.
{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Definitions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "import clickhouse_connect"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "\n",
    "ch_TEST_client = clickhouse_connect.get_client(host='e.rationaledge.io', port=443, username='default', password='werioubTGwvf0-dsbv_', database='redb', verify=False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [],
   "source": [
    "ch_TEST_BETA_client = clickhouse_connect.get_client(host='k.rationaledge.io', port=443, username='default', password='werioubTGwvf0-dsbv_', database='default', verify=False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<bound method HttpClient.close_connections of <clickhouse_connect.driver.httpclient.HttpClient object at 0x105fd64d0>>"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ch_TEST_BETA_client.close_connections"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<clickhouse_connect.driver.summary.QuerySummary at 0x11f900810>"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ch_TEST_BETA_client.command(\"\"\"\n",
    "RENAME DATABASE redb TO orig_redb;\n",
    "\"\"\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## DB Creation (schema 2025-08-02)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "ch_TEST_client.command(\"\"\"\n",
    "CREATE DATABASE IF NOT EXISTS redb;\n",
    "\"\"\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Define General Tables"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "### CREATE FULL REDB DATABASE\n",
    "def create_redb_with_all_tables(client):\n",
    "    client.command(\"\"\"\n",
    "        CREATE DATABASE IF NOT EXISTS redb\n",
    "    \"\"\")\n",
    "    create_all_general_tables(client)\n",
    "    create_all_pe_tables(client)\n",
    "\n",
    "#### CREATE FULL TABLES\n",
    "def create_all_general_tables(client):\n",
    "    create_basic_properties_dbtable(client)\n",
    "    create_hashes_dbtable(client)\n",
    "    create_capa_dbtable(client)\n",
    "    create_die_dbtable(client)\n",
    "    create_extra_findings_dbtable(client)\n",
    "\n",
    "\n",
    "##################################\n",
    "#### CREATE INDIVIDUAL TABLES ####\n",
    "##################################\n",
    "\n",
    "#### GENERAL TABLES ####\n",
    "# All tables have SETTINGS index_granularity = 8192\n",
    "def create_basic_properties_dbtable(client):\n",
    "    # Create samples_metadata table\n",
    "    client.command(\"\"\"\n",
    "        CREATE TABLE IF NOT EXISTS redb_basic_properties (\n",
    "            sha256 FixedString(64), -- primary key\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            filename Nullable(String),\n",
    "            sample_name String,\n",
    "            filesize UInt64,\n",
    "            file_entropy Float64,\n",
    "            filetype LowCardinality(String),\n",
    "            filetype_mime LowCardinality(String),\n",
    "            filetype_magika LowCardinality(String),\n",
    "            analysis_date DateTime64(3, 'UTC'),\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        PRIMARY KEY (sha256)\n",
    "        ORDER BY (sha256)\n",
    "    \"\"\")\n",
    "\n",
    "def create_hashes_dbtable(client):\n",
    "    # Create hashes table\n",
    "    client.command(\"\"\"\n",
    "        CREATE TABLE IF NOT EXISTS redb_hashes (\n",
    "            sha256 FixedString(64), -- primary key\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            ssdeep_hash Nullable(String),\n",
    "            tlsh_hash Nullable(String),\n",
    "            authentihash Nullable(String),\n",
    "            imphash Nullable(String),\n",
    "            impfuzzy Nullable(String),\n",
    "            typerefhash Nullable(String),\n",
    "            richhash Nullable(String),\n",
    "            richpe_hash Nullable(String),\n",
    "            richpv_hash Nullable(String),\n",
    "            richpv_hash_sorted Nullable(String),\n",
    "            dhash Nullable(String),\n",
    "            analysis_date DateTime64(3, 'UTC')\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        PRIMARY KEY (sha256)\n",
    "        ORDER BY (sha256)\n",
    "    \"\"\")\n",
    "\n",
    "def create_capa_dbtable(client):\n",
    "    # Create sample_capabilities table\n",
    "    client.command(\"\"\"\n",
    "        SET enable_json_type = 1;\n",
    "    \"\"\")\n",
    "    client.command(\"\"\"\n",
    "        -- Base table for CAPA analysis results\n",
    "        CREATE TABLE IF NOT EXISTS redb_capa (\n",
    "            sha256 FixedString(64),\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            analysis_date DateTime64(3, 'UTC'),\n",
    "            -- Store full JSON dumps as strings for flexibility\n",
    "            capa_dump JSON CODEC(ZSTD(3)),\n",
    "            attack_dump JSON CODEC(ZSTD(3)),\n",
    "            mbc_dump JSON CODEC(ZSTD(3))\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        ORDER BY sha256;\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        -- Normalized table for capabilities and namespaces\n",
    "        CREATE TABLE IF NOT EXISTS redb_capa_capabilities (\n",
    "            sha256 FixedString(64),\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            analysis_date DateTime64(3, 'UTC'),\n",
    "            namespace LowCardinality(String),\n",
    "            capability LowCardinality(String)\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        ORDER BY (sha256, namespace, capability);\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        -- Materialized view for capability statistics\n",
    "        CREATE MATERIALIZED VIEW IF NOT EXISTS redb_capa_capabilities_stats (\n",
    "            namespace LowCardinality(String),\n",
    "            capability LowCardinality(String),\n",
    "            samples_bitmap AggregateFunction(groupBitmap, UInt64),\n",
    "            occurrence_count UInt64\n",
    "        ) ENGINE = AggregatingMergeTree()\n",
    "        ORDER BY (namespace, capability)\n",
    "        AS SELECT\n",
    "            namespace,\n",
    "            capability,\n",
    "            groupBitmapState(cityHash64(sha256)) as samples_bitmap,\n",
    "            count() as occurrence_count\n",
    "        FROM redb_capa_capabilities\n",
    "        GROUP BY namespace, capability;\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        -- Normalized table for MITRE ATT&CK mappings\n",
    "        CREATE TABLE IF NOT EXISTS redb_capa_attack (\n",
    "            sha256 FixedString(64),\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            analysis_date DateTime64(3, 'UTC'),\n",
    "            tactic LowCardinality(String),\n",
    "            technique LowCardinality(String),\n",
    "            technique_id LowCardinality(String)\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        ORDER BY (sha256, tactic, technique_id);\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        -- Materialized view for ATT&CK statistics\n",
    "        CREATE MATERIALIZED VIEW IF NOT EXISTS redb_capa_attack_stats (\n",
    "            tactic LowCardinality(String),\n",
    "            technique LowCardinality(String),\n",
    "            technique_id LowCardinality(String),\n",
    "            samples_bitmap AggregateFunction(groupBitmap, UInt64),\n",
    "            occurrence_count UInt64\n",
    "        ) ENGINE = AggregatingMergeTree()\n",
    "        ORDER BY (tactic, technique_id)\n",
    "        AS SELECT\n",
    "            tactic,\n",
    "            technique,\n",
    "            technique_id,\n",
    "            groupBitmapState(cityHash64(sha256)) as samples_bitmap,\n",
    "            count() as occurrence_count\n",
    "        FROM redb_capa_attack\n",
    "        GROUP BY tactic, technique, technique_id;\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        -- Normalized table for MBC mappings\n",
    "        CREATE TABLE IF NOT EXISTS redb_capa_mbc (\n",
    "            sha256 FixedString(64),\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            analysis_date DateTime64(3, 'UTC'),\n",
    "            objective LowCardinality(String),\n",
    "            behavior LowCardinality(String),\n",
    "            behavior_id LowCardinality(String)\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        ORDER BY (sha256, objective, behavior_id);\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        -- Materialized view for MBC statistics\n",
    "        CREATE MATERIALIZED VIEW IF NOT EXISTS redb_capa_mbc_stats (\n",
    "            objective LowCardinality(String),\n",
    "            behavior LowCardinality(String),\n",
    "            behavior_id LowCardinality(String),\n",
    "            samples_bitmap AggregateFunction(groupBitmap, UInt64),\n",
    "            occurrence_count UInt64\n",
    "        ) ENGINE = AggregatingMergeTree()\n",
    "        ORDER BY (objective, behavior_id)\n",
    "        AS SELECT\n",
    "            objective,\n",
    "            behavior,\n",
    "            behavior_id,\n",
    "            groupBitmapState(cityHash64(sha256)) as samples_bitmap,\n",
    "            count() as occurrence_count\n",
    "        FROM redb_capa_mbc\n",
    "        GROUP BY objective, behavior, behavior_id;\n",
    "    \"\"\")\n",
    "\n",
    "def create_die_dbtable(client):\n",
    "    # Create sample_die table\n",
    "    client.command(\"\"\"\n",
    "        SET enable_json_type = 1;\n",
    "    \"\"\")\n",
    "    client.command(\"\"\"\n",
    "        CREATE TABLE IF NOT EXISTS redb_die (\n",
    "            sha256 FixedString(64),\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            die_info JSON CODEC(ZSTD(3)),\n",
    "            analysis_date DateTime64(3, 'UTC')\n",
    "        ) ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        PRIMARY KEY (sha256)\n",
    "        ORDER BY (sha256)\n",
    "    \"\"\")\n",
    "\n",
    "    client.command(\"\"\"\n",
    "        CREATE MATERIALIZED VIEW redb_die_mv\n",
    "        (\n",
    "            sha256 FixedString(64),\n",
    "            md5 FixedString(32),\n",
    "            sha1 FixedString(40),\n",
    "            analysis_date DateTime64(3, 'UTC'),\n",
    "            compiler LowCardinality(Nullable(String)),\n",
    "            compiler_full Nullable(String),\n",
    "            format LowCardinality(Nullable(String)),\n",
    "            format_full Nullable(String),\n",
    "            installer LowCardinality(Nullable(String)),\n",
    "            installer_full Nullable(String),\n",
    "            joiner LowCardinality(Nullable(String)),\n",
    "            joiner_full Nullable(String),\n",
    "            language LowCardinality(Nullable(String)),\n",
    "            language_full Nullable(String),\n",
    "            library LowCardinality(Nullable(String)),\n",
    "            library_full Nullable(String),\n",
    "            linker LowCardinality(Nullable(String)),\n",
    "            linker_full Nullable(String),\n",
    "            operation_system LowCardinality(Nullable(String)),\n",
    "            operation_system_full Nullable(String),\n",
    "            packer LowCardinality(Nullable(String)),\n",
    "            packer_full Nullable(String),\n",
    "            protector LowCardinality(Nullable(String)),\n",
    "            protector_full Nullable(String),\n",
    "            sfx LowCardinality(Nullable(String)),\n",
    "            sfx_full Nullable(String),\n",
    "            sign_tool LowCardinality(Nullable(String)),\n",
    "            sign_tool_full Nullable(String),\n",
    "            stub LowCardinality(Nullable(String)),\n",
    "            stub_full Nullable(String),\n",
    "            tool LowCardinality(Nullable(String)),\n",
    "            tool_full Nullable(String),   \n",
    "            -- overlay JSON CODEC(ZSTD(3)),\n",
    "            -- resource JSON CODEC(ZSTD(3)),\n",
    "            has_overlay UInt8,\n",
    "            has_resources UInt8,\n",
    "            is_packed UInt8\n",
    "        )\n",
    "        ENGINE = ReplacingMergeTree(analysis_date)\n",
    "        ORDER BY (sha256)\n",
    "        POPULATE\n",
    "        AS SELECT\n",
    "            sha256,\n",
    "            md5,\n",
    "            sha1,\n",
    "            analysis_date,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'compiler'), '') AS compiler,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'compiler(full)'), '') AS compiler_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'format'), '') AS format,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'format(full)'), '') AS format_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'installer'), '') AS installer,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'installer(full)'), '') AS installer_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'joiner'), '') AS joiner,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'joiner(full)'), '') AS joiner_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'language'), '') AS language,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'language(full)'), '') AS language_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'library'), '') AS library,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'library(full)'), '') AS library_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'linker'), '') AS linker,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'linker(full)'), '') AS linker_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'operation_system'), '') AS operation_system,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'operation_system(full)'), '') AS operation_system_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'packer'), '') AS packer,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'packer(full)'), '') AS packer_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'protector'), '') AS protector,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'protector(full)'), '') AS protector_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'sfx'), '') AS sfx,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'sfx(full)'), '') AS sfx_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'sign_tool'), '') AS sign_tool,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'sign_tool(full)'), '') AS sign_tool_full,\n",
    "            nullIf(JSONExtractString(toString(die_info), 'stub'), '') AS stub,\n",
    "            nullIf(JSONExtractString(toString(die_info),