MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/01/02 through 01/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 959 975
Davis 379 9 388
Irvine 384 0 384
Los Angeles 0 510 510
Riverside 6 32 38
San Diego 192 731 923
San Francisco 15 0 15
Santa Barbara 8 178 186
Santa Cruz 9 98 107
Lawrence Berkeley 0 216 216
Lawrence Livermore 0 83 83
Los Alamos 0 0 0
Other - UC 25 122 147
Other-Network UC n/a 1,587 1,587
_______ ______ _____
1,034 4,525 5,559
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,410 7,791 67,414
INS90 848 1,552 8,671
INS85 539 884 3,994
INS80 394 667 2,832
INS69 368 741 5,525
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 101 205 1,684
2-4 a.m. 97 195 1,579
4-6 a.m. 112 215 1,593
6-8 a.m. 166 431 2,357
8-10 a.m. 671 1,326 9,273
10-12 a.m. 1,112 2,200 15,407
12-2 p.m. 776 1,641 11,351
2-4 p.m. 1,091 2,267 18,668
4-6 p.m. 779 1,731 13,981
6-8 p.m. 317 634 6,433
8-10 p.m. 193 457 3,880
10-12 p.m. 144 333 2,230
__________ __________ __________ _________________
Total: 5,559 11,635 88,436
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 25 2,323 2,348
Davis 838 26 864
Irvine 915 0 915
Los Angeles 0 994 994
Riverside 9 75 84
San Diego 440 1,580 2,020
San Francisco 23 0 23
Santa Barbara 12 358 370
Santa Cruz 20 190 210
Lawrence Berkeley 0 547 547
Lawrence Livermore 0 199 199
Los Alamos 0 0 0
Other - UC 27 271 298
Other-Network UC n/a 2,763 2,763
_______ ______ _____
2,309 9,326 11,635
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 197 17,951 18,148
Davis 7,063 38 7,101
Irvine 11,719 0 11,719
Los Angeles 0 9,288 9,288
Riverside 39 363 402
San Diego 3,844 13,396 17,240
San Francisco 90 0 90
Santa Barbara 35 3,463 3,498
Santa Cruz 174 1,783 1,957
Lawrence Berkeley 0 3,653 3,653
Lawrence Livermore 0 1,251 1,251
Los Alamos 0 0 0
Other - UC 51 1,856 1,907
Other-Network UC n/a 12,182 12,182
_______ ______ _____
23,212 65,224 88,436
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 9:57
Average session length (minutes:seconds) 13:50
Longest session recorded (minutes:seconds) 749:11
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 253.1
Retrievals per search - standard deviation 2284.5
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 6.5%
Percent of long searches completed
(includes partial results) 72.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,780 31.4%
DISPLAY (excluding automatic displays) 12,372 36.1%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 239 0.7%
EXPLAIN 368 1.1%
SET/RESET 3,400 9.9%
SHOW 60 0.2%
ADD ON (AND, OR, AND NOT) 855 2.5%
LOGON or LOGOFF 4,526 13.2%
COMMENT 0 0.0%
SAVE 396 1.2%
USE 5 0.0%
OTHER 1,304 3.8%
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 5,455 44.8% 1,348 24.7% 14 82.2 389.8
TITLE WORD 2,242 18.4% 1,051 46.9% 5 144.3 1559.3
EXACT TITLE 125 1.0% 72 57.6% 1 18.2 47.4
JOURNAL 371 3.0% 117 31.5% 7 419.8 1896.7
EXACT JOURNAL 126 1.0% 52 41.3% 50 1205.3 3368.0
SUBJECT 362 3.0% 79 21.8% 29 1008.7 4235.0
EXACT SUBJECT 75 0.6% 6 8.0% 13 559.1 2226.1
THESAURUS 3 0.0% 0 0.0% 82 906.7 1428.4
EXACT THESAURUS 4 0.0% 0 0.0% 78 6330.5 12505.0
KEYWORD 2,314 19.0% 422 18.2% 29 955.1 5076.4
SUBFILE 4 0.0% 0 0.0% 79 76.0 12.2
FORM 67 0.6% 11 16.4% 22 274.1 1162.9
DATE 355 2.9% 49 13.8% 25 380.6 1834.8
ADDED 2 0.0% 0 0.0% 9 8.5 4.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 85 0.7% 20 23.5% 18 494.1 2498.1
CONFERENCE 77 0.6% 24 31.2% 62 984.8 3869.2
LANGUAGE 6 0.0% 0 0.0% 73 70.3 14.1
CHEMICAL NAME 37 0.3% 17 45.9% 9 54.6 118.7
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 2 0.0% 0 0.0% 32 31.5 43.1
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 421 3.5% 68 16.1% 5 43.4 195.5
EXACT PE 37 0.3% 2 5.4% 8 76.5 160.6
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 5 0.0% 1 20.0% 37 40.8 21.3
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 1,500 14.2% 478 31.9% 6 235.8 2063.6
Single 9,090 85.8% 2,375 26.1% 18 389.9 2857.9
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 3 100% 1 33.3% 5 5.0 5.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 84.0%
LONG 3.3%
TAGS 0.3%
FIELDS 3.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 47.9%
2. First word of command is invalid 24.4%
3. FIND command with invalid index name 6.4%
4. DISPLAY command contains invalid word 2.8%
5. PS command - no previous screen 2.1%
6. Invalid SET DB INS command issued 1.7%
7. DISPLAY command - no FIND results 1.3%
8. NS of SHOW/EXP command-no next screen 1.3%
9. Search term missing from search command 1.3%
10. DISPLAY command-record numbers too large 1.1%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 17.4%
2. FIND (INSPEC DBS) 15.5%
3. GUIDE (INSPEC DBS) 7.9%
4. INSPEC BACKFILES 7.6%
5. LOCATE (INS/PSY DBS) 6.3%
6. INDEXES (INSPEC DBS) 6.0%
7. DATABASES 5.7%
8. MAIL 3.5%
9. 1752 3.5%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.3%
11. All others 23.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.5%
2. First word of command is invalid 8.9%
3. NS command - no next screen 6.3%
4. FIND command with zero results 5.4%
5. DISPLAY command - middle of >1 screen 5.4%
6. DISPLAY command-complete in one screen 4.9%
7. FIND command with invalid index name 4.6%
8. DISPLAY command-first of >1 screen 4.4%
9. FIND command retrieves >1 book 3.8%
10. 850 3.5%
11. All others 23.2%
Ten most frequent SHOW requests:
1. HISTORY 64.4%
2. MAIL STATUS 15.3%
3. SEARCH 11.9%
4. INSPEC LOADING STATISTICS 5.1%
5. SETTINGS (INS/PSY DBS) 1.7%
6. INSPEC NEWS 1.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)