MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/12/01 through 05/18/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 461 465
Davis 64 4 68
Irvine 116 0 116
Los Angeles 0 127 127
Riverside 12 16 28
San Diego 59 252 311
San Francisco 13 0 13
Santa Barbara 3 59 62
Santa Cruz 9 49 58
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 46 46
Los Alamos 0 0 0
Other - UC 1 41 42
Other-Network UC n/a 364 364
_______ ______ _____
281 1,465 1,746
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,067 3,129 448,884
INS90 237 464 2,177
INS85 165 277 1,487
INS80 139 274 1,253
INS69 138 292 2,552
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 34 105 845
2-4 a.m. 30 83 457
4-6 a.m. 29 52 211
6-8 a.m. 85 166 1,179
8-10 a.m. 163 312 1,816
10-12 a.m. 302 633 7,250
12-2 p.m. 261 517 5,972
2-4 p.m. 279 592 10,712
4-6 p.m. 264 831 148,177
6-8 p.m. 149 498 95,592
8-10 p.m. 67 295 86,520
10-12 p.m. 83 352 97,622
__________ __________ __________ _________________
Total: 1,746 4,436 456,353
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7 1,067 1,074
Davis 190 4 194
Irvine 257 0 257
Los Angeles 0 240 240
Riverside 42 66 108
San Diego 140 1,034 1,174
San Francisco 65 0 65
Santa Barbara 10 120 130
Santa Cruz 37 91 128
Lawrence Berkeley 0 93 93
Lawrence Livermore 0 115 115
Los Alamos 0 0 0
Other - UC 2 105 107
Other-Network UC n/a 751 751
_______ ______ _____
750 3,686 4,436
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 126 8,630 8,756
Davis 1,656 0 1,656
Irvine 2,158 0 2,158
Los Angeles 0 2,391 2,391
Riverside 558 266 824
San Diego 543 431,762 432,305
San Francisco 178 0 178
Santa Barbara 11 964 975
Santa Cruz 105 634 739
Lawrence Berkeley 0 1,065 1,065
Lawrence Livermore 0 694 694
Los Alamos 0 0 0
Other - UC 6 433 439
Other-Network UC n/a 4,173 4,173
_______ ______ _____
5,341 451,012 456,353
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 4.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.0
Standard deviation in seconds 0.0
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:18
Average session length (minutes:seconds) 11:07
Longest session recorded (minutes:seconds) 113:08
Average number of searches completed per session 2.5
Retrievals per search - median 12.0
Retrievals per search - average 1642.4
Retrievals per search - standard deviation 19858
Percent of searches completed with 0 results 23.3%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 77.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,080 2.8%
DISPLAY (excluding automatic displays) 136,426 94.4%
BROWSE 767 0.5%
SELECT 0 0.0%
HELP 73 0.1%
EXPLAIN 143 0.1%
SET/RESET 1,098 0.8%
SHOW 49 0.0%
ADD ON (AND, OR, AND NOT) 356 0.2%
LOGON or LOGOFF 1,630 1.1%
COMMENT 0 0.0%
SAVE 136 0.1%
USE 3 0.0%
OTHER 448 0.3%
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 1,596 36.3% 382 23.9% 14 77.1 314.1
TITLE WORD 782 17.8% 328 41.9% 9 341.0 2313.0
EXACT TITLE 29 0.7% 16 55.2% 1 1.7 1.3
JOURNAL 98 2.2% 40 40.8% 210 2693.1 4706.4
EXACT JOURNAL 47 1.1% 22 46.8% 13 672.5 1507.3
SUBJECT 93 2.1% 25 26.9% 129 1152.0 3561.9
EXACT SUBJECT 35 0.8% 4 11.4% 552 1334.4 2918.7
THESAURUS 12 0.3% 4 33.3% 12,392 40806.8 74897.4
EXACT THESAURUS 698 15.9% 17 2.4% 997 3891.1 16427.7
KEYWORD 758 17.2% 138 18.2% 29 3464.2 36468.3
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 5 0.1% 0 0.0% 15 593.0 1252.5
DATE 63 1.4% 20 31.7% 18 732.7 2638.3
ADDED 9 0.2% 6 66.7% 8 8.7 4.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 23 0.5% 7 30.4% 7 48.7 99.4
CONFERENCE 24 0.5% 17 70.8% 40 273.4 626.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 42 1.0% 31 73.8% 2 70.5 213.3
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 79 1.8% 10 12.7% 9 233.4 1454.4
EXACT PE 6 0.1% 0 0.0% 4 6.7 7.6
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 354 8.8% 138 39.0% 5 395.4 2350.7
Single 3,680 91.2% 786 21.4% 39 1917.3 19232.4
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 48 6.3% 7 14.6% 68 50.2 47.7
EXACT THESAURUS 719 93.7% 3 0.4% 1 5.0 18.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.2%
SHORT 3.1%
LONG 0.1%
TAGS 0.0%
FIELDS 0.1%
BROWSE REVIEW 1.4%
BROWSE LONG 0.0%
PERIODICALS 0.1%
COMMENTS 0.0%
Other 95.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 1.3%
Ten most frequent errors:
1. Invalid number in DISPLAY command 38.3%
2. NS command - no next screen 28.8%
3. First word of command is invalid 14.8%
4. FIND command with invalid index name 3.6%
5. DISPLAY command contains invalid word 1.9%
6. Left parenthesis is misplaced in search 1.7%
7. NS of SHOW/EXP command-no next screen 1.3%
8. Search term missing from search command 0.9%
9. Valid command at an inappropriate time 0.7%
10. DISPLAY command-record numbers too large 0.7%
11. All others 7.4%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 14.7%
2. FIND (INSPEC DBS) 12.6%
3. INSPEC DATABASES 11.2%
4. DISPLAY (INS/PSY DBS) 7.0%
5. INDEXES (INSPEC DBS) 6.3%
6. MAIL 5.6%
7. LOCATE (INS/PSY DBS) 4.2%
8. GUIDE (INSPEC DBS) 4.2%
9. I022 3.5%
10. DATABASES 3.5%
11. All others 27.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.0%
2. First word of command is invalid 13.9%
3. DISPLAY command-first of >1 screen 6.9%
4. FIND command with invalid index name 6.0%
5. NS command - no next screen 4.6%
6. NS of SHOW/EXP command-no next screen 3.7%
7. 850 3.2%
8. DISPLAY command - middle of >1 screen 2.8%
9. DISPLAY command - last of >1 screen 2.8%
10. FIND command with zero results 2.3%
11. All others 28.7%
Ten most frequent SHOW requests:
1. HISTORY 59.2%
2. SEARCH 18.4%
3. INSPEC LOADING STATISTICS 6.1%
4. SETTINGS (INS/PSY DBS) 4.1%
5. INSPEC NEWS 4.1%
6. PSYCINFO LOADING STATISTICS 2.0%
7. GLOSSARY 2.0%
8. SYSTEM NEWS 2.0%
9. MAIL STATUS 2.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)