MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS
Time period: 07/01/00 through 07/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 267 560 827
Davis 112 2 114
Irvine 87 0 87
Los Angeles 107 216 323
Riverside 65 2 67
San Diego 31 27 58
San Francisco 20 0 20
Santa Barbara 163 105 268
Santa Cruz 12 10 22
Other - UC 7 29 36
Other-Network UC n/a 263 263
_______ ______ _____
871 1,214 2,085
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 39 611
2-4 a.m. 3 11 135
4-6 a.m. 3 7 24
6-8 a.m. 36 86 811
8-10 a.m. 220 546 4,954
10-12 a.m. 411 1,123 8,460
12-2 p.m. 431 1,373 10,171
2-4 p.m. 507 2,113 14,755
4-6 p.m. 306 1,120 9,426
6-8 p.m. 99 235 4,045
8-10 p.m. 35 100 1,011
10-12 p.m. 30 104 947
__________ __________ __________ _________________
Total: 2,085 6,857 55,350
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 932 1,694 2,626
Davis 191 1 192
Irvine 237 0 237
Los Angeles 1,168 512 1,680
Riverside 148 6 154
San Diego 112 45 157
San Francisco 34 0 34
Santa Barbara 504 335 839
Santa Cruz 23 13 36
Other - UC 17 91 108
Other-Network UC n/a 794 794
_______ ______ _____
3,366 3,491 6,857
Number of FIND commands by database
RLIN Bibliographic File 4,475
Anthropological Literature 819
Avery Index to Architectural Per. 636
History of Science & Technology 120
Index to Foreign Legal Periodical 54
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 529
English Short Title Catalogue 224
Total number of FIND commands 6,857
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,190 11,652 21,842
Davis 1,267 0 1,267
Irvine 1,909 0 1,909
Los Angeles 6,298 5,468 11,766
Riverside 907 8 915
San Diego 846 517 1,363
San Francisco 175 0 175
Santa Barbara 4,726 2,590 7,316
Santa Cruz 284 64 348
Other - UC 324 986 1,310
Other-Network UC n/a 7,139 7,139
_______ ______ _____
26,926 28,424 55,350
Number of Records Displayed by database
RLIN Bibliographic File 36,961
Anthropological Literature 6,038
Avery Index to Architectural Per. 6,095
History of Science & Technology 784
Index to Foreign Legal Periodical 180
World Law Index-Hispanic Legis 0
Handbook of Latin Amer. Studies 0
Chicano 3,321
English Short Title Catalogue 1,971
Total number of Records Displayed 55,350
1.4 Relative Use of Databases
______________________________
Relative use of RLG-Z39.50 databases: Sessions Percentage
RLIN Bibliographic File 1,228 58.9%
Anthropological Literature 355 17.0%
Avery Index to Architectural Per. 147 7.1%
History of Science & Technology 56 2.7%
Index to Foreign Legal Periodical 18 0.9%
World Law Index-Hispanic Legis 0 0.0%
Handbook of Latin Amer. Studies 0 0.0%
Chicano 197 9.4%
English Short Title Catalogue 84 4.0%
Percent of searches done in the RCAT database 65.3%
Percent of searches done in the ANTH database 11.9%
Percent of searches done in the ARCH database 9.3%
Percent of searches done in the HSCI database 1.8%
Percent of searches done in the FLEG database 0.8%
Percent of searches done in the HLEG database 0.0%
Percent of searches done in the HLAS database 0.0%
Percent of searches done in the CDB database 7.7%
Percent of searches done in the ESTC database 3.3%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.9
Standard deviation in seconds 7.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 2.1
2.1 RLIN Bibliographic File Database Statistics
________________________________________________
Median session length (minutes:seconds) 12:45
Average session length (minutes:seconds) 18:21
Longest session recorded (minutes:seconds) 560:28
Average number of searches completed per session 3.6
Retrievals per search - median 3.0
Retrievals per search - average 137.7
Retrievals per search - standard deviation 2355.2
Percent of searches completed with 0 results 24.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,260 33.2%
DISPLAY (excluding automatic displays) 5,795 45.2%
HELP 45 0.4%
EXPLAIN 79 0.6%
SET/RESET 761 5.9%
SHOW 70 0.5%
ADD ON (AND, OR, AND NOT) 215 1.7%
LOGON or LOGOFF 1,225 9.6%
COMMENT 0 0.0%
USE 3 0.0%
OTHER 362 2.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.8%
SHORT 46.1%
LONG 11.2%
TAGS 0.0%
FIELDS 4.2%
PERIODICALS 3.7%
COMMENTS 0.0%
Other 28.9%
RLIN Bibliographic File Database Statistics continued:
______________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 1,192 23.7% 274 23.0% 13 137.9 1353.6
EXACT AUTHOR 12 0.2% 3 25.0% 8 65.9 143.4
CORPORATE AUTHOR 79 1.6% 13 16.5% 9 62.2 214.2
EXACT CORPORATE 5 0.1% 2 40.0% 2 2.0 0.0
TITLE WORD 1,662 33.1% 471 28.3% 7 211.0 2483.4
EXACT TITLE/SERI 394 7.8% 135 34.3% 4 258.5 2051.8
EXACT JOURNAL 17 0.3% 6 35.3% 97 259.5 464.1
SUBJECT 130 2.6% 37 28.5% 12 1600.9 12460.9
EXACT SUBJECT 5 0.1% 2 40.0% 3 2.3 1.2
SERIES 38 0.8% 18 47.4% 20 108.2 192.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 7 0.1% 1 14.3% 19 49.3 59.2
DATE 0 0.0% 0 0.0% 0 0.0 0.0
GOV DOC NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
REPORT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
GE 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 204 4.1% 55 27.0% 13 69.2 434.1
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 7 0.1% 2 28.6% 1 1.0 0.0
PLACE OF PUBL. 4 0.1% 0 0.0% 17 158.5 294.7
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
XOT 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 109 2.2% 31 28.4% 7 34.1 109.8
EXACT PE 14 0.3% 3 21.4% 10 22.8 24.8
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 1,149 22.9% 191 16.6% 3 11.6 69.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 597 14.1% 171 28.6% 7 38.4 260.7
Single 3,633 85.9% 851 23.4% 5 212.4 2972.6
2.2 Anthropological Literature Database Statistics
___________________________________________________
Median session length (minutes:seconds) 4:39
Average session length (minutes:seconds) 9:49
Longest session recorded (minutes:seconds) 199:45
Average number of searches completed per session 2.3
Retrievals per search - median 2.0
Retrievals per search - average 153.8
Retrievals per search - standard deviation 1170.7
Percent of searches completed with 0 results 34.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 784 36.3%
DISPLAY (excluding automatic displays) 495 22.9%
HELP 89 4.1%
EXPLAIN 99 4.6%
SET/RESET 163 7.5%
SHOW 5 0.2%
ADD ON (AND, OR, AND NOT) 35 1.6%
LOGON or LOGOFF 405 18.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 85 3.9%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 80.3%
LONG 10.0%
TAGS 0.0%
FIELDS 1.4%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 1.2%
Anthropological Literature Database Statistics continued:
_________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 271 32.7% 64 23.6% 9 21.9 42.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 304 36.7% 113 37.2% 5 98.7 257.6
EXACT TITLE 9 1.1% 5 55.6% 64 60.0 59.3
SUBJECT 196 23.7% 89 45.4% 34 923.0 3109.8
EXACT SUBJECT 8 1.0% 4 50.0% 4 18.5 31.0
EXACT JOURNAL 11 1.3% 4 36.4% 323 784.6 1055.5
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 16 1.9% 3 18.8% 40 133.7 194.1
EXACT PE 3 0.4% 2 66.7% 39 39.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 10 1.2% 2 20.0% 7 19.9 23.5
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 44 5.6% 8 18.2% 7 128.1 233.9
Single 740 94.4% 270 36.5% 10 256.7 1536.3
2.3 Avery Index to Architectural Per. Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 8:42
Average session length (minutes:seconds) 14:51
Longest session recorded (minutes:seconds) 212:51
Average number of searches completed per session 4.3
Retrievals per search - median 3.0
Retrievals per search - average 287.7
Retrievals per search - standard deviation 1904.3
Percent of searches completed with 0 results 34.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 605 37.7%
DISPLAY (excluding automatic displays) 558 34.8%
HELP 45 2.8%
EXPLAIN 30 1.9%
SET/RESET 61 3.8%
SHOW 9 0.6%
ADD ON (AND, OR, AND NOT) 31 1.9%
LOGON or LOGOFF 197 12.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 67 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 84.4%
LONG 3.9%
TAGS 0.0%
FIELDS 0.4%
PERIODICALS 8.5%
COMMENTS 0.0%
Other 1.5%
Avery Index to Architectural Per. Database Statistics continued:
________________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 93 14.9% 51 54.8% 12 49.3 75.1
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 3 0.5% 1 33.3% 3 3.0 0.0
EXACT CORPORATE 1 0.2% 1 100% 0 0.0 0.0
TITLE WORD 159 25.5% 56 35.2% 6 145.4 509.2
EXACT TITLE 8 1.3% 6 75.0% 19 18.5 24.7
SUBJECT 283 45.4% 88 31.1% 50 609.2 3248.7
EXACT SUBJECT 3 0.5% 2 66.7% 49 49.0 0.0
EXACT JOURNAL 23 3.7% 6 26.1% 2,751 1959.3 1667.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 9 1.4% 1 11.1% 97 85.9 89.3
PLACE OF PUBL. 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 35 5.6% 2 5.7% 12 344.0 1663.6
EXACT PE 1 0.2% 0 0.0% 22 22.0 0.0
RPE 1 0.2% 1 100% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 4 0.6% 2 50.0% 79 79.0 94.8
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 18 3.0% 5 27.8% 12 56.5 78.7
Single 587 97.0% 207 35.3% 23 473.7 2445.0
2.4 History of Science & Technology Database Statistics
________________________________________________________
Median session length (minutes:seconds) 3:20
Average session length (minutes:seconds) 6:08
Longest session recorded (minutes:seconds) 41:39
Average number of searches completed per session 2.1
Retrievals per search - median 3.0
Retrievals per search - average 70.2
Retrievals per search - standard deviation 213.0
Percent of searches completed with 0 results 39.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 118 34.5%
DISPLAY (excluding automatic displays) 71 20.8%
HELP 14 4.1%
EXPLAIN 11 3.2%
SET/RESET 10 2.9%
SHOW 6 1.8%
ADD ON (AND, OR, AND NOT) 2 0.6%
LOGON or LOGOFF 93 27.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 17 5.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.1%
SHORT 87.4%
LONG 6.9%
TAGS 0.0%
FIELDS 3.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.1%
History of Science & Technology Database Statistics continued:
______________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 37 30.8% 18 48.6% 20 26.9 22.9
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 53 44.2% 12 22.6% 13 79.1 164.5
EXACT TITLE 1 0.8% 1 100% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 29 24.2% 15 51.7% 93 329.6 488.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1 0.8% 0 0.0% 5 5.0 0.0
Single 117 99.2% 46 39.3% 17 117.7 267.3
2.5 Index to Foreign Legal Periodical Database Statistics
__________________________________________________________
Median session length (minutes:seconds) 5:32
Average session length (minutes:seconds) 10:35
Longest session recorded (minutes:seconds) 34:55
Average number of searches completed per session 3.0
Retrievals per search - median 1.0
Retrievals per search - average 15.5
Retrievals per search - standard deviation 51.8
Percent of searches completed with 0 results 42.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 53 39.8%
DISPLAY (excluding automatic displays) 40 30.1%
HELP 1 0.8%
EXPLAIN 1 0.8%
SET/RESET 4 3.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.8%
LOGON or LOGOFF 30 22.6%
COMMENT 0 0.0%
USE 1 0.8%
OTHER 2 1.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 70.0%
LONG 28.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
Index to Foreign Legal Periodical Database Statistics continued:
________________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 22 41.5% 10 45.5% 4 5.1 4.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 18 34.0% 6 33.3% 3 5.2 6.3
EXACT TITLE 1 1.9% 0 0.0% 3 3.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 11 20.8% 7 63.6% 104 120.3 138.9
EXACT SUBJECT 1 1.9% 0 0.0% 191 191.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL. 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 53 100% 23 43.4% 4 26.6 67.5
2.6 Chicano Database Statistics
________________________________
Median session length (minutes:seconds) 12:04
Average session length (minutes:seconds) 12:46
Longest session recorded (minutes:seconds) 65:12
Average number of searches completed per session 2.7
Retrievals per search - median 4.0
Retrievals per search - average 68.9
Retrievals per search - standard deviation 268.0
Percent of searches completed with 0 results 36.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 510 38.1%
DISPLAY (excluding automatic displays) 302 22.6%
HELP 38 2.8%
EXPLAIN 39 2.9%
SET/RESET 45 3.4%
SHOW 5 0.4%
ADD ON (AND, OR, AND NOT) 19 1.4%
LOGON or LOGOFF 312 23.3%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 68 5.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.3%
SHORT 30.6%
LONG 63.3%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 4.0%
Chicano Database Statistics continued:
______________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 49 9.5% 16 32.7% 12 22.8 24.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 96 18.6% 42 43.8% 12 98.3 343.3
EXACT TITLE 6 1.2% 3 50.0% 1 1.0 0.0
ABSTRACT 2 0.4% 2 100% 0 0.0 0.0
SUBJECT 327 63.2% 107 32.7% 24 130.3 366.6
EXACT SUBJECT 8 1.5% 5 62.5% 21 37.7 45.4
EXACT JOURNAL 14 2.7% 7 50.0% 55 124.1 181.7
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 8 1.5% 2 25.0% 49 51.5 35.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 5 1.0% 0 0.0% 2 6.4 6.1
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 2 0.4% 1 50.0% 146 146.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 8 1.6% 2 25.0% 49 51.5 35.8
Single 501 98.4% 181 36.1% 21 111.2 337.5
2.7 English Short Title Catalogue Database Statistics
______________________________________________________
Median session length (minutes:seconds) 10:31
Average session length (minutes:seconds) 10:21
Longest session recorded (minutes:seconds) 40:34
Average number of searches completed per session 2.7
Retrievals per search - median 2.0
Retrievals per search - average 40.9
Retrievals per search - standard deviation 191.8
Percent of searches completed with 0 results 34.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 221 33.4%
DISPLAY (excluding automatic displays) 209 31.6%
HELP 13 2.0%
EXPLAIN 23 3.5%
SET/RESET 32 4.8%
SHOW 1 0.2%
ADD ON (AND, OR, AND NOT) 3 0.5%
LOGON or LOGOFF 136 20.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 3.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.2%
SHORT 62.9%
LONG 24.2%
TAGS 0.0%
FIELDS 0.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.3%
English Short Title Catalogue Database Statistics continued:
____________________________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
SUBJECT 31 11.0% 22 71.0% 4 209.4 551.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 86 30.5% 21 24.4% 8 43.6 161.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
CORPORATE AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORP. AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 102 36.2% 33 32.4% 9 64.4 232.4
EXACT TITLE 6 2.1% 1 16.7% 5 8.0 7.4
UNIFORM TITLE 1 0.4% 1 100% 0 0.0 0.0
EXACT UNIFORM TI 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
IMPRINT YEAR 52 18.4% 24 46.2% 2 5.8 8.5
COUNTRY CODE 0 0.0% 0 0.0% 0 0.0 0.0
SHELFMARK 0 0.0% 0 0.0% 0 0.0 0.0
HOLDING LIBRARY 0 0.0% 0 0.0% 0 0.0 0.0
INDEXED BY 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 1.1% 0 0.0% 12 9.3 7.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 1 0.4% 0 0.0% 1 1.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 61 27.6% 25 41.0% 3 6.8 8.4
Single 160 72.4% 52 32.5% 9 82.5 270.6
3.0 Error, EXPLAIN and HELP statistics (All RLG-Z39.50 databases)
__________________________________________________________________
Percent of commands that contained errors 11.5%
Ten most frequent errors:
1. First word of command is invalid 28.8%
2. NS command - no next screen 24.8%
3. FIND command with invalid index name 8.3%
4. DISPLAY command contains invalid word 4.0%
5. Index invalid in current database 2.8%
6. Z39.50 host unable to process search 2.4%
7. Max. # of ports to a Z39 db are in use 1.5%
8. Valid command at an inappropriate time 1.5%
9. 1188 1.4%
10. DISPLAY command - no FIND results 1.2%
11. All others 23.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (Z39.50 A&I DBS) 16.0%
2. LOCATE (Z39.50 DBS) 14.5%
3. INDEXES (RCAT DB) 9.6%
4. FIND (Z39.50 DBS) 8.5%
5. Unrecognized term 6.0%
6. INDEXES (ANTH DB) 4.6%
7. COMMANDS (Z39.50 DBS) 4.3%
8. LOCATE (Z39.50 DBS) 3.9%
9. GUIDE (Z39.50 non-A&I DBS) 3.5%
10. DATABASES 2.5%
11. All others 26.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. First word of command is invalid 19.4%
3. FIND command with invalid index name 8.0%
4. DISPLAY command-complete in one screen 6.6%
5. FIND command with zero results 6.5%
6. DISPLAY command - middle of >1 screen 6.1%
7. DISPLAY command-first of >1 screen 5.9%
8. F/BR with index invalid in current DB 4.7%
9. MELVYL system could not process command 3.2%
10. DISPLAY command - last of >1 screen 1.9%
11. All others 13.3%
Ten most frequent SHOW requests:
1. HISTORY 83.3%
2. SEARCH 11.5%
3. GLOSSARY 3.1%
4. LOCATION 1.0%
5. LIBRARY LOCATIONS 1.0%
11. All others 0.0%
RLGmm/dd rlg MELVYL RLG-Z39.50 DATABASES TELNET STATISTICS (weekly)