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<a href="lmf__igd_8sql__in.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ----------------------------------------------------------------------- */</span><span class="comment">/** </span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * @file lmf_igd.sql_in</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * @brief SQL functions for low-rank matrix factorization</span>
<a name="l00006"></a>00006 <span class="comment"> * @date June 2012</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> */</span><span class="comment">/* ----------------------------------------------------------------------- */</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 m4_include(`SQLCommon.m4<span class="stringliteral">&#39;)</span>
<a name="l00011"></a>00011 <span class="stringliteral"></span>
<a name="l00012"></a>00012 <span class="stringliteral">CREATE TYPE MADLIB_SCHEMA.lmf_result AS (</span>
<a name="l00013"></a>00013 <span class="stringliteral"> flatten_matrix_u DOUBLE PRECISION[],</span>
<a name="l00014"></a>00014 <span class="stringliteral"> flatten_matrix_v DOUBLE PRECISION[],</span>
<a name="l00015"></a>00015 <span class="stringliteral"> rmse DOUBLE PRECISION</span>
<a name="l00016"></a>00016 <span class="stringliteral">);</span>
<a name="l00017"></a>00017 <span class="stringliteral"></span>
<a name="l00018"></a>00018 <span class="stringliteral">--------------------------------------------------------------------------</span>
<a name="l00019"></a>00019 <span class="stringliteral">-- create SQL functions for IGD optimizer</span>
<a name="l00020"></a>00020 <span class="stringliteral">--------------------------------------------------------------------------</span>
<a name="l00021"></a>00021 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_transition(</span>
<a name="l00022"></a>00022 <span class="stringliteral"> state DOUBLE PRECISION[],</span>
<a name="l00023"></a>00023 <span class="stringliteral"> row_num SMALLINT,</span>
<a name="l00024"></a>00024 <span class="stringliteral"> column_num SMALLINT,</span>
<a name="l00025"></a>00025 <span class="stringliteral"> val DOUBLE PRECISION,</span>
<a name="l00026"></a>00026 <span class="stringliteral"> previous_state DOUBLE PRECISION[],</span>
<a name="l00027"></a>00027 <span class="stringliteral"> row_dim SMALLINT,</span>
<a name="l00028"></a>00028 <span class="stringliteral"> column_dim SMALLINT,</span>
<a name="l00029"></a>00029 <span class="stringliteral"> max_rank SMALLINT,</span>
<a name="l00030"></a>00030 <span class="stringliteral"> stepsize DOUBLE PRECISION,</span>
<a name="l00031"></a>00031 <span class="stringliteral"> scale_factor DOUBLE PRECISION)</span>
<a name="l00032"></a>00032 <span class="stringliteral">RETURNS DOUBLE PRECISION[]</span>
<a name="l00033"></a>00033 <span class="stringliteral">AS &#39;</span>MODULE_PATHNAME<span class="stringliteral">&#39;</span>
<a name="l00034"></a>00034 <span class="stringliteral">LANGUAGE C IMMUTABLE;</span>
<a name="l00035"></a>00035 <span class="stringliteral"></span>
<a name="l00036"></a>00036 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_merge(</span>
<a name="l00037"></a>00037 <span class="stringliteral"> state1 DOUBLE PRECISION[],</span>
<a name="l00038"></a>00038 <span class="stringliteral"> state2 DOUBLE PRECISION[])</span>
<a name="l00039"></a>00039 <span class="stringliteral">RETURNS DOUBLE PRECISION[]</span>
<a name="l00040"></a>00040 <span class="stringliteral">AS &#39;</span>MODULE_PATHNAME<span class="stringliteral">&#39;</span>
<a name="l00041"></a>00041 <span class="stringliteral">LANGUAGE C IMMUTABLE STRICT;</span>
<a name="l00042"></a>00042 <span class="stringliteral"></span>
<a name="l00043"></a>00043 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_final(</span>
<a name="l00044"></a>00044 <span class="stringliteral"> state DOUBLE PRECISION[])</span>
<a name="l00045"></a>00045 <span class="stringliteral">RETURNS DOUBLE PRECISION[]</span>
<a name="l00046"></a>00046 <span class="stringliteral">AS &#39;</span>MODULE_PATHNAME<span class="stringliteral">&#39;</span>
<a name="l00047"></a>00047 <span class="stringliteral">LANGUAGE C IMMUTABLE STRICT;</span>
<a name="l00048"></a>00048 <span class="stringliteral"></span><span class="comment"></span>
<a name="l00049"></a>00049 <span class="comment">/**</span>
<a name="l00050"></a>00050 <span class="comment"> * @internal</span>
<a name="l00051"></a>00051 <span class="comment"> * @brief Perform one iteration of the incremental gradient</span>
<a name="l00052"></a>00052 <span class="comment"> * method for computing low-rank matrix factorization</span>
<a name="l00053"></a>00053 <span class="comment"> */</span>
<a name="l00054"></a>00054 CREATE AGGREGATE MADLIB_SCHEMA.lmf_igd_step(
<a name="l00055"></a>00055 /*+ row_num */ SMALLINT,
<a name="l00056"></a>00056 /*+ column_num */ SMALLINT,
<a name="l00057"></a>00057 /*+ val */ DOUBLE PRECISION,
<a name="l00058"></a>00058 /*+ previous_state */ DOUBLE PRECISION[],
<a name="l00059"></a>00059 /*+ row_dim */ SMALLINT,
<a name="l00060"></a>00060 /*+ column_dim */ SMALLINT,
<a name="l00061"></a>00061 /*+ max_rank */ SMALLINT,
<a name="l00062"></a>00062 /*+ stepsize */ DOUBLE PRECISION,
<a name="l00063"></a>00063 /*+ scale_factor */ DOUBLE PRECISION) (
<a name="l00064"></a>00064 STYPE=DOUBLE PRECISION[],
<a name="l00065"></a>00065 SFUNC=MADLIB_SCHEMA.lmf_igd_transition,
<a name="l00066"></a>00066 m4_ifdef(`GREENPLUM&#39;,`prefunc=MADLIB_SCHEMA.lmf_igd_merge,<span class="stringliteral">&#39;)</span>
<a name="l00067"></a>00067 <span class="stringliteral"> FINALFUNC=MADLIB_SCHEMA.lmf_igd_final,</span>
<a name="l00068"></a>00068 <span class="stringliteral"> INITCOND=&#39;</span>{0,0,0,0,0,0,0,0,0}<span class="stringliteral">&#39;</span>
<a name="l00069"></a>00069 <span class="stringliteral">);</span>
<a name="l00070"></a>00070 <span class="stringliteral"></span>
<a name="l00071"></a>00071 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.internal_lmf_igd_distance(</span>
<a name="l00072"></a>00072 <span class="stringliteral"> /*+ state1 */ DOUBLE PRECISION[],</span>
<a name="l00073"></a>00073 <span class="stringliteral"> /*+ state2 */ DOUBLE PRECISION[])</span>
<a name="l00074"></a>00074 <span class="stringliteral">RETURNS DOUBLE PRECISION AS</span>
<a name="l00075"></a>00075 <span class="stringliteral">&#39;</span>MODULE_PATHNAME<span class="stringliteral">&#39;</span>
<a name="l00076"></a>00076 <span class="stringliteral">LANGUAGE c IMMUTABLE STRICT;</span>
<a name="l00077"></a>00077 <span class="stringliteral"></span>
<a name="l00078"></a>00078 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.internal_lmf_igd_result(</span>
<a name="l00079"></a>00079 <span class="stringliteral"> /*+ state */ DOUBLE PRECISION[])</span>
<a name="l00080"></a>00080 <span class="stringliteral">RETURNS MADLIB_SCHEMA.lmf_result AS</span>
<a name="l00081"></a>00081 <span class="stringliteral">&#39;</span>MODULE_PATHNAME<span class="stringliteral">&#39;</span>
<a name="l00082"></a>00082 <span class="stringliteral">LANGUAGE c IMMUTABLE STRICT;</span>
<a name="l00083"></a>00083 <span class="stringliteral"></span>
<a name="l00084"></a>00084 <span class="stringliteral"></span>
<a name="l00085"></a>00085 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.internal_execute_using_lmf_igd_args(</span>
<a name="l00086"></a>00086 <span class="stringliteral"> sql VARCHAR, INTEGER, INTEGER, INTEGER, DOUBLE PRECISION, </span>
<a name="l00087"></a>00087 <span class="stringliteral"> DOUBLE PRECISION, INTEGER, DOUBLE PRECISION</span>
<a name="l00088"></a>00088 <span class="stringliteral">) RETURNS VOID</span>
<a name="l00089"></a>00089 <span class="stringliteral">IMMUTABLE</span>
<a name="l00090"></a>00090 <span class="stringliteral">CALLED ON NULL INPUT</span>
<a name="l00091"></a>00091 <span class="stringliteral">LANGUAGE c</span>
<a name="l00092"></a>00092 <span class="stringliteral">AS &#39;</span>MODULE_PATHNAME<span class="stringliteral">&#39;, &#39;</span>exec_sql_using<span class="stringliteral">&#39;;</span>
<a name="l00093"></a>00093 <span class="stringliteral"></span>
<a name="l00094"></a>00094 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.internal_compute_lmf_igd(</span>
<a name="l00095"></a>00095 <span class="stringliteral"> rel_args VARCHAR,</span>
<a name="l00096"></a>00096 <span class="stringliteral"> rel_state VARCHAR,</span>
<a name="l00097"></a>00097 <span class="stringliteral"> rel_source VARCHAR,</span>
<a name="l00098"></a>00098 <span class="stringliteral"> col_row VARCHAR,</span>
<a name="l00099"></a>00099 <span class="stringliteral"> col_column VARCHAR,</span>
<a name="l00100"></a>00100 <span class="stringliteral"> col_value VARCHAR)</span>
<a name="l00101"></a>00101 <span class="stringliteral">RETURNS INTEGER</span>
<a name="l00102"></a>00102 <span class="stringliteral">AS $$PythonFunction(convex, lmf_igd, compute_lmf_igd)$$</span>
<a name="l00103"></a>00103 <span class="stringliteral">LANGUAGE plpythonu VOLATILE;</span>
<a name="l00104"></a>00104 <span class="stringliteral"></span>
<a name="l00105"></a>00105 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_run(</span>
<a name="l00106"></a>00106 <span class="stringliteral"> rel_output VARCHAR,</span>
<a name="l00107"></a>00107 <span class="stringliteral"> rel_source REGCLASS,</span>
<a name="l00108"></a>00108 <span class="stringliteral"> col_row VARCHAR,</span>
<a name="l00109"></a>00109 <span class="stringliteral"> col_column VARCHAR,</span>
<a name="l00110"></a>00110 <span class="stringliteral"> col_value VARCHAR,</span>
<a name="l00111"></a>00111 <span class="stringliteral"> row_dim INTEGER, /*+ DEFAULT SELECT max(col_row) FROM rel_source */</span>
<a name="l00112"></a>00112 <span class="stringliteral"> column_dim INTEGER, /*+ DEFAULT SELECT max(col_column) FROM rel_source */</span>
<a name="l00113"></a>00113 <span class="stringliteral"> max_rank INTEGER, /*+ DEFAULT 20 */</span>
<a name="l00114"></a>00114 <span class="stringliteral"> stepsize DOUBLE PRECISION, /*+ DEFAULT 0.01 */</span>
<a name="l00115"></a>00115 <span class="stringliteral"> scale_factor DOUBLE PRECISION, /*+ DEFAULT 0.1 */</span>
<a name="l00116"></a>00116 <span class="stringliteral"> num_iterations INTEGER, /*+ DEFAULT 10 */</span>
<a name="l00117"></a>00117 <span class="stringliteral"> tolerance DOUBLE PRECISION) /*+ DEFAULT 0.0001 */</span>
<a name="l00118"></a>00118 <span class="stringliteral">RETURNS INTEGER AS $$</span>
<a name="l00119"></a>00119 <span class="stringliteral">DECLARE</span>
<a name="l00120"></a>00120 <span class="stringliteral"> iteration_run INTEGER;</span>
<a name="l00121"></a>00121 <span class="stringliteral"> model_id INTEGER;</span>
<a name="l00122"></a>00122 <span class="stringliteral"> rmse DOUBLE PRECISION;</span>
<a name="l00123"></a>00123 <span class="stringliteral"> old_messages VARCHAR;</span>
<a name="l00124"></a>00124 <span class="stringliteral">BEGIN</span>
<a name="l00125"></a>00125 <span class="stringliteral"> RAISE NOTICE &#39;</span>Matrix % to be factorized: % x %<span class="stringliteral">&#39;, rel_source, row_dim, column_dim;</span>
<a name="l00126"></a>00126 <span class="stringliteral"></span>
<a name="l00127"></a>00127 <span class="stringliteral"> -- We first setup the argument table. Rationale: We want to avoid all data</span>
<a name="l00128"></a>00128 <span class="stringliteral"> -- conversion between native types and Python code. Instead, we use Python</span>
<a name="l00129"></a>00129 <span class="stringliteral"> -- as a pure driver layer.</span>
<a name="l00130"></a>00130 <span class="stringliteral"> old_messages :=</span>
<a name="l00131"></a>00131 <span class="stringliteral"> (SELECT setting FROM pg_settings WHERE name = &#39;</span>client_min_messages<span class="stringliteral">&#39;);</span>
<a name="l00132"></a>00132 <span class="stringliteral"> EXECUTE &#39;</span>SET client_min_messages TO warning<span class="stringliteral">&#39;;</span>
<a name="l00133"></a>00133 <span class="stringliteral"> PERFORM MADLIB_SCHEMA.create_schema_pg_temp();</span>
<a name="l00134"></a>00134 <span class="stringliteral"> -- Unfortunately, the EXECUTE USING syntax is only available starting</span>
<a name="l00135"></a>00135 <span class="stringliteral"> -- PostgreSQL 8.4:</span>
<a name="l00136"></a>00136 <span class="stringliteral"> -- http://www.postgresql.org/docs/8.4/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN</span>
<a name="l00137"></a>00137 <span class="stringliteral"> -- We therefore have to emulate.</span>
<a name="l00138"></a>00138 <span class="stringliteral"> PERFORM MADLIB_SCHEMA.internal_execute_using_lmf_igd_args($sql$</span>
<a name="l00139"></a>00139 <span class="stringliteral"> DROP TABLE IF EXISTS pg_temp._madlib_lmf_igd_args;</span>
<a name="l00140"></a>00140 <span class="stringliteral"> CREATE TABLE pg_temp._madlib_lmf_igd_args AS</span>
<a name="l00141"></a>00141 <span class="stringliteral"> SELECT </span>
<a name="l00142"></a>00142 <span class="stringliteral"> $1 AS row_dim, </span>
<a name="l00143"></a>00143 <span class="stringliteral"> $2 AS column_dim,</span>
<a name="l00144"></a>00144 <span class="stringliteral"> $3 AS max_rank, </span>
<a name="l00145"></a>00145 <span class="stringliteral"> $4 AS stepsize,</span>
<a name="l00146"></a>00146 <span class="stringliteral"> $5 AS scale_factor, </span>
<a name="l00147"></a>00147 <span class="stringliteral"> $6 AS num_iterations, </span>
<a name="l00148"></a>00148 <span class="stringliteral"> $7 AS tolerance;</span>
<a name="l00149"></a>00149 <span class="stringliteral"> $sql$,</span>
<a name="l00150"></a>00150 <span class="stringliteral"> row_dim, column_dim, max_rank, stepsize,</span>
<a name="l00151"></a>00151 <span class="stringliteral"> scale_factor, num_iterations, tolerance);</span>
<a name="l00152"></a>00152 <span class="stringliteral"> EXECUTE &#39;</span>SET client_min_messages TO <span class="stringliteral">&#39; || old_messages;</span>
<a name="l00153"></a>00153 <span class="stringliteral"></span>
<a name="l00154"></a>00154 <span class="stringliteral"> -- Perform acutal computation.</span>
<a name="l00155"></a>00155 <span class="stringliteral"> -- Unfortunately, Greenplum and PostgreSQL &lt;= 8.2 do not have conversion</span>
<a name="l00156"></a>00156 <span class="stringliteral"> -- operators from regclass to varchar/text.</span>
<a name="l00157"></a>00157 <span class="stringliteral"> iteration_run := MADLIB_SCHEMA.internal_compute_lmf_igd(</span>
<a name="l00158"></a>00158 <span class="stringliteral"> &#39;</span>_madlib_lmf_igd_args<span class="stringliteral">&#39;, &#39;</span>_madlib_lmf_igd_state<span class="stringliteral">&#39;,</span>
<a name="l00159"></a>00159 <span class="stringliteral"> textin(regclassout(rel_source)), col_row, col_column, col_value);</span>
<a name="l00160"></a>00160 <span class="stringliteral"></span>
<a name="l00161"></a>00161 <span class="stringliteral"> -- create result table if it does not exist</span>
<a name="l00162"></a>00162 <span class="stringliteral"> BEGIN</span>
<a name="l00163"></a>00163 <span class="stringliteral"> EXECUTE &#39;</span>SELECT 1 FROM <span class="stringliteral">&#39; || rel_output || &#39;</span> LIMIT 0<span class="stringliteral">&#39;;</span>
<a name="l00164"></a>00164 <span class="stringliteral"> EXCEPTION</span>
<a name="l00165"></a>00165 <span class="stringliteral"> WHEN undefined_table THEN</span>
<a name="l00166"></a>00166 <span class="stringliteral"> EXECUTE &#39;</span>
<a name="l00167"></a>00167 CREATE TABLE <span class="stringliteral">&#39; || rel_output || &#39;</span> (
<a name="l00168"></a>00168 <span class="keywordtype">id</span> serial,
<a name="l00169"></a>00169 flatten_matrix_u DOUBLE PRECISION[],
<a name="l00170"></a>00170 flatten_matrix_v DOUBLE PRECISION[],
<a name="l00171"></a>00171 rmse DOUBLE PRECISION)<span class="stringliteral">&#39;;</span>
<a name="l00172"></a>00172 <span class="stringliteral"> END;</span>
<a name="l00173"></a>00173 <span class="stringliteral"></span>
<a name="l00174"></a>00174 <span class="stringliteral"> -- A work-around for GPDB not supporting RETURNING for INSERT</span>
<a name="l00175"></a>00175 <span class="stringliteral"> -- We generate an id using nextval before INSERT</span>
<a name="l00176"></a>00176 <span class="stringliteral"> EXECUTE &#39;</span>
<a name="l00177"></a>00177 SELECT nextval(<span class="stringliteral">&#39; || quote_literal(rel_output || &#39;</span>_id_seq<span class="stringliteral">&#39;) ||&#39;</span>::regclass)<span class="stringliteral">&#39;</span>
<a name="l00178"></a>00178 <span class="stringliteral"> INTO model_id;</span>
<a name="l00179"></a>00179 <span class="stringliteral"></span>
<a name="l00180"></a>00180 <span class="stringliteral"> -- output model</span>
<a name="l00181"></a>00181 <span class="stringliteral"> -- Retrieve result from state table and insert it</span>
<a name="l00182"></a>00182 <span class="stringliteral"> EXECUTE &#39;</span>
<a name="l00183"></a>00183 INSERT INTO <span class="stringliteral">&#39; || rel_output || &#39;</span>
<a name="l00184"></a>00184 SELECT <span class="stringliteral">&#39; || model_id || &#39;</span>, (result).*
<a name="l00185"></a>00185 FROM (
<a name="l00186"></a>00186 SELECT MADLIB_SCHEMA.internal_lmf_igd_result(_state) AS result
<a name="l00187"></a>00187 FROM _madlib_lmf_igd_state
<a name="l00188"></a>00188 WHERE _iteration = <span class="stringliteral">&#39; || iteration_run || &#39;</span>
<a name="l00189"></a>00189 ) subq<span class="stringliteral">&#39;;</span>
<a name="l00190"></a>00190 <span class="stringliteral"></span>
<a name="l00191"></a>00191 <span class="stringliteral"> EXECUTE &#39;</span>
<a name="l00192"></a>00192 SELECT rmse
<a name="l00193"></a>00193 FROM <span class="stringliteral">&#39; || rel_output || &#39;</span>
<a name="l00194"></a>00194 WHERE <span class="keywordtype">id</span> = <span class="stringliteral">&#39; || model_id</span>
<a name="l00195"></a>00195 <span class="stringliteral"> INTO rmse;</span>
<a name="l00196"></a>00196 <span class="stringliteral"></span>
<a name="l00197"></a>00197 <span class="stringliteral"> -- return description</span>
<a name="l00198"></a>00198 <span class="stringliteral"> RAISE NOTICE &#39;</span>
<a name="l00199"></a>00199 Finished low-rank matrix factorization <span class="keyword">using</span> incremental gradient
<a name="l00200"></a>00200 * table : % (%, %, %)
<a name="l00201"></a>00201 Results:
<a name="l00202"></a>00202 * RMSE = %
<a name="l00203"></a>00203 Output:
<a name="l00204"></a>00204 * view : SELECT * FROM % WHERE <span class="keywordtype">id</span> = %<span class="stringliteral">&#39;,</span>
<a name="l00205"></a>00205 <span class="stringliteral"> rel_source, col_row, col_column, col_value, rmse, rel_output, model_id;</span>
<a name="l00206"></a>00206 <span class="stringliteral"> </span>
<a name="l00207"></a>00207 <span class="stringliteral"> RETURN model_id;</span>
<a name="l00208"></a>00208 <span class="stringliteral">END;</span>
<a name="l00209"></a>00209 <span class="stringliteral">$$ LANGUAGE plpgsql VOLATILE;</span>
<a name="l00210"></a>00210 <span class="stringliteral"></span>
<a name="l00211"></a>00211 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_run(</span>
<a name="l00212"></a>00212 <span class="stringliteral"> rel_output VARCHAR,</span>
<a name="l00213"></a>00213 <span class="stringliteral"> rel_source REGCLASS,</span>
<a name="l00214"></a>00214 <span class="stringliteral"> col_row VARCHAR,</span>
<a name="l00215"></a>00215 <span class="stringliteral"> col_column VARCHAR,</span>
<a name="l00216"></a>00216 <span class="stringliteral"> col_value VARCHAR,</span>
<a name="l00217"></a>00217 <span class="stringliteral"> row_dim INTEGER, /*+ DEFAULT SELECT max(col_row) FROM rel_source */</span>
<a name="l00218"></a>00218 <span class="stringliteral"> column_dim INTEGER, /*+ DEFAULT SELECT max(col_column) FROM rel_source */</span>
<a name="l00219"></a>00219 <span class="stringliteral"> max_rank INTEGER, /*+ DEFAULT 20 */</span>
<a name="l00220"></a>00220 <span class="stringliteral"> stepsize DOUBLE PRECISION, /*+ DEFAULT 0.01 */</span>
<a name="l00221"></a>00221 <span class="stringliteral"> scale_factor DOUBLE PRECISION) /*+ DEFAULT 0.1 */</span>
<a name="l00222"></a>00222 <span class="stringliteral">RETURNS INTEGER AS $$</span>
<a name="l00223"></a>00223 <span class="stringliteral"> SELECT MADLIB_SCHEMA.lmf_igd_run($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, 10, 0.0001);</span>
<a name="l00224"></a>00224 <span class="stringliteral">$$ LANGUAGE sql VOLATILE;</span>
<a name="l00225"></a>00225 <span class="stringliteral"></span>
<a name="l00226"></a>00226 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_run(</span>
<a name="l00227"></a>00227 <span class="stringliteral"> rel_output VARCHAR,</span>
<a name="l00228"></a>00228 <span class="stringliteral"> rel_source REGCLASS,</span>
<a name="l00229"></a>00229 <span class="stringliteral"> col_row VARCHAR,</span>
<a name="l00230"></a>00230 <span class="stringliteral"> col_column VARCHAR,</span>
<a name="l00231"></a>00231 <span class="stringliteral"> col_value VARCHAR,</span>
<a name="l00232"></a>00232 <span class="stringliteral"> row_dim INTEGER, /*+ DEFAULT SELECT max(col_row) FROM rel_source */</span>
<a name="l00233"></a>00233 <span class="stringliteral"> column_dim INTEGER, /*+ DEFAULT SELECT max(col_column) FROM rel_source */</span>
<a name="l00234"></a>00234 <span class="stringliteral"> max_rank INTEGER, /*+ DEFAULT 20 */</span>
<a name="l00235"></a>00235 <span class="stringliteral"> stepsize DOUBLE PRECISION) /*+ DEFAULT 0.01 */</span>
<a name="l00236"></a>00236 <span class="stringliteral">RETURNS INTEGER AS $$</span>
<a name="l00237"></a>00237 <span class="stringliteral"> -- set scale_factor as default 0.1</span>
<a name="l00238"></a>00238 <span class="stringliteral"> SELECT MADLIB_SCHEMA.lmf_igd_run($1, $2, $3, $4, $5, $6, $7, $8, $9, 0.1);</span>
<a name="l00239"></a>00239 <span class="stringliteral">$$ LANGUAGE sql VOLATILE;</span>
<a name="l00240"></a>00240 <span class="stringliteral"> </span>
<a name="l00241"></a>00241 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_run(</span>
<a name="l00242"></a>00242 <span class="stringliteral"> rel_output VARCHAR,</span>
<a name="l00243"></a>00243 <span class="stringliteral"> rel_source REGCLASS,</span>
<a name="l00244"></a>00244 <span class="stringliteral"> col_row VARCHAR,</span>
<a name="l00245"></a>00245 <span class="stringliteral"> col_column VARCHAR,</span>
<a name="l00246"></a>00246 <span class="stringliteral"> col_value VARCHAR,</span>
<a name="l00247"></a>00247 <span class="stringliteral"> row_dim INTEGER, /*+ DEFAULT SELECT max(col_row) FROM rel_source */</span>
<a name="l00248"></a>00248 <span class="stringliteral"> column_dim INTEGER, /*+ DEFAULT SELECT max(col_column) FROM rel_source */</span>
<a name="l00249"></a>00249 <span class="stringliteral"> max_rank INTEGER) /*+ DEFAULT 20 */</span>
<a name="l00250"></a>00250 <span class="stringliteral">RETURNS INTEGER AS $$</span>
<a name="l00251"></a>00251 <span class="stringliteral"> -- set stepsize as default 0.01</span>
<a name="l00252"></a>00252 <span class="stringliteral"> SELECT MADLIB_SCHEMA.lmf_igd_run($1, $2, $3, $4, $5, $6, $7, $8, 0.01);</span>
<a name="l00253"></a>00253 <span class="stringliteral">$$ LANGUAGE sql VOLATILE;</span>
<a name="l00254"></a>00254 <span class="stringliteral"></span>
<a name="l00255"></a>00255 <span class="stringliteral">CREATE FUNCTION MADLIB_SCHEMA.lmf_igd_run(</span>
<a name="l00256"></a>00256 <span class="stringliteral"> rel_output VARCHAR,</span>
<a name="l00257"></a>00257 <span class="stringliteral"> rel_source REGCLASS,</span>
<a name="l00258"></a>00258 <span class="stringliteral"> col_row VARCHAR,</span>
<a name="l00259"></a>00259 <span class="stringliteral"> col_column VARCHAR,</span>
<a name="l00260"></a>00260 <span class="stringliteral"> col_value TEXT)</span>
<a name="l00261"></a>00261 <span class="stringliteral">RETURNS INTEGER AS $$</span>
<a name="l00262"></a>00262 <span class="stringliteral">DECLARE</span>
<a name="l00263"></a>00263 <span class="stringliteral"> row_dim INTEGER;</span>
<a name="l00264"></a>00264 <span class="stringliteral"> column_dim INTEGER;</span>
<a name="l00265"></a>00265 <span class="stringliteral">BEGIN</span>
<a name="l00266"></a>00266 <span class="stringliteral"> EXECUTE &#39;</span>
<a name="l00267"></a>00267 SELECT max(<span class="stringliteral">&#39; || col_row || &#39;</span>) + 1, max(<span class="stringliteral">&#39; || col_column || &#39;</span>) + 1
<a name="l00268"></a>00268 FROM <span class="stringliteral">&#39; || textin(regclassout(rel_source))</span>
<a name="l00269"></a>00269 <span class="stringliteral"> INTO row_dim, column_dim;</span>
<a name="l00270"></a>00270 <span class="stringliteral"></span>
<a name="l00271"></a>00271 <span class="stringliteral"> RETURN (SELECT MADLIB_SCHEMA.lmf_igd_run($1, $2, $3, $4, $5, row_dim, column_dim, 20));</span>
<a name="l00272"></a>00272 <span class="stringliteral">END;</span>
<a name="l00273"></a>00273 <span class="stringliteral">$$ LANGUAGE plpgsql VOLATILE;</span>
<a name="l00274"></a>00274 <span class="stringliteral"></span>
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