MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/17/01 through 02/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1 349 350
Davis 51 12 63
Irvine 105 0 105
Los Angeles 9 167 176
Riverside 1 9 10
San Diego 71 251 322
San Francisco 23 0 23
Santa Barbara 27 79 106
Santa Cruz 2 33 35
Lawrence Berkeley 0 77 77
Lawrence Livermore 0 70 70
Los Alamos 0 0 0
Other - UC 5 93 98
Other-Network UC n/a 392 392
_______ ______ _____
295 1,532 1,827
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,157 2,896 23,114
INS90 259 474 2,721
INS85 177 328 1,779
INS80 116 239 1,182
INS69 118 261 1,677
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 58 904
2-4 a.m. 14 69 852
4-6 a.m. 25 55 326
6-8 a.m. 61 184 1,186
8-10 a.m. 144 322 1,816
10-12 a.m. 300 670 3,922
12-2 p.m. 310 685 5,953
2-4 p.m. 332 698 5,339
4-6 p.m. 265 654 5,505
6-8 p.m. 170 404 1,898
8-10 p.m. 91 214 1,398
10-12 p.m. 88 185 1,374
__________ __________ __________ _________________
Total: 1,827 4,198 30,473
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 1 857 858
Davis 107 21 128
Irvine 319 0 319
Los Angeles 15 377 392
Riverside 2 32 34
San Diego 212 533 745
San Francisco 44 0 44
Santa Barbara 69 183 252
Santa Cruz 2 57 59
Lawrence Berkeley 0 236 236
Lawrence Livermore 0 156 156
Los Alamos 0 0 0
Other - UC 17 229 246
Other-Network UC n/a 729 729
_______ ______ _____
788 3,410 4,198
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7 4,357 4,364
Davis 701 45 746
Irvine 2,661 0 2,661
Los Angeles 82 3,135 3,217
Riverside 0 158 158
San Diego 1,282 4,185 5,467
San Francisco 127 0 127
Santa Barbara 379 3,022 3,401
Santa Cruz 10 648 658
Lawrence Berkeley 0 2,150 2,150
Lawrence Livermore 0 1,113 1,113
Los Alamos 0 0 0
Other - UC 287 1,654 1,941
Other-Network UC n/a 4,470 4,470
_______ ______ _____
5,536 24,937 30,473
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 4.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.4
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:31
Average session length (minutes:seconds) 11:28
Longest session recorded (minutes:seconds) 145:06
Average number of searches completed per session 2.3
Retrievals per search - median 5.0
Retrievals per search - average 951.4
Retrievals per search - standard deviation 17167
Percent of searches completed with 0 results 28.8%
Percent of searches entered that are long 5.4%
Percent of long searches completed
(includes partial results) 68.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,820 31.3%
DISPLAY (excluding automatic displays) 4,395 36.0%
BROWSE 1 0.0%
SELECT 1 0.0%
HELP 92 0.8%
EXPLAIN 136 1.1%
SET/RESET 1,044 8.6%
SHOW 40 0.3%
ADD ON (AND, OR, AND NOT) 378 3.1%
LOGON or LOGOFF 1,659 13.6%
COMMENT 0 0.0%
SAVE 126 1.0%
USE 3 0.0%
OTHER 513 4.2%
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 1,690 40.8% 411 24.3% 15 78.4 246.9
TITLE WORD 992 24.0% 430 43.3% 4 70.3 278.7
EXACT TITLE 27 0.7% 16 59.3% 1 16.5 33.7
JOURNAL 105 2.5% 44 41.9% 31 2677.4 12994.9
EXACT JOURNAL 20 0.5% 12 60.0% 398 1092.6 1428.9
SUBJECT 159 3.8% 48 30.2% 54 1818.7 4756.7
EXACT SUBJECT 8 0.2% 0 0.0% 13 1971.5 5519.7
THESAURUS 5 0.1% 0 0.0% 12 2241.2 4994.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 756 18.3% 166 22.0% 40 3036.7 31651.0
SUBFILE 1 0.0% 0 0.0% 1,519 1519.0 0.0
FORM 36 0.9% 5 13.9% 23 74.9 119.6
DATE 62 1.5% 15 24.2% 124 1722.3 2477.3
ADDED 10 0.2% 5 50.0% 32 33.4 24.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 69 1.7% 19 27.5% 12 322.5 912.6
CONFERENCE 36 0.9% 13 36.1% 118 313.5 573.3
LANGUAGE 1 0.0% 0 0.0% 85 85.0 0.0
CHEMICAL NAME 26 0.6% 9 34.6% 15 1672.1 6044.9
ISSN 1 0.0% 1 100% 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 115 2.8% 25 21.7% 6 411.4 3099.7
EXACT PE 16 0.4% 0 0.0% 3 11.8 21.0
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 4 0.1% 1 25.0% 39 29.3 20.3
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 388 10.4% 146 37.6% 11 432.6 1461.8
Single 3,358 89.6% 928 27.6% 18 945.3 15822.9
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 1 100% 0 0.0% 8 8.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 82.6%
LONG 3.4%
TAGS 0.1%
FIELDS 5.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 42.4%
2. First word of command is invalid 27.4%
3. FIND command with invalid index name 5.4%
4. Max. # of ports to a Z39 db are in use 4.3%
5. DISPLAY command contains invalid word 3.8%
6. PS command - no previous screen 1.5%
7. DISPLAY command - no FIND results 1.3%
8. Valid command at an inappropriate time 1.2%
9. Add-on search, no index name after verb 1.2%
10. Search term missing from search command 1.1%
11. All others 10.5%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 18.4%
2. INSPEC DATABASES 17.6%
3. INSPEC BACKFILES 10.3%
4. LOCATE (INS/PSY DBS) 8.8%
5. GUIDE (INSPEC DBS) 7.4%
6. DISPLAY (INS/PSY DBS) 4.4%
7. INDEXES (INSPEC DBS) 3.7%
8. Unrecognized term 3.7%
9. MAIL 2.9%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 2.9%
11. All others 19.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.2%
2. First word of command is invalid 12.7%
3. FIND command with zero results 9.6%
4. DISPLAY command - middle of >1 screen 7.0%
5. DISPLAY command - last of >1 screen 6.1%
6. FIND command with invalid index name 4.8%
7. DISPLAY command-complete in one screen 4.4%
8. DISPLAY command-first of >1 screen 4.4%
9. NS command - no next screen 3.9%
10. FIND command retrieves >1 book 3.5%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 52.6%
2. MAIL STATUS 28.9%
3. SETTINGS (INS/PSY DBS) 10.5%
4. INSPEC LOADING STATISTICS 2.6%
5. SEARCH 2.6%
11. All others 2.6%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)