MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/12/02 through 01/18/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 240 244
Davis 36 2 38
Irvine 71 0 71
Los Angeles 0 139 139
Riverside 1 6 7
San Diego 51 159 210
San Francisco 4 0 4
Santa Barbara 1 26 27
Santa Cruz 6 45 51
Lawrence Berkeley 0 66 66
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 4 43 47
Other-Network UC n/a 347 347
_______ ______ _____
178 1,088 1,266
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 776 1,811 13,633
INS90 197 361 1,926
INS85 127 181 785
INS80 85 145 467
INS69 81 145 1,095
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 24 327
2-4 a.m. 19 37 686
4-6 a.m. 22 33 264
6-8 a.m. 37 117 836
8-10 a.m. 136 258 1,718
10-12 a.m. 259 569 3,711
12-2 p.m. 209 459 2,346
2-4 p.m. 258 527 3,566
4-6 p.m. 148 281 1,904
6-8 p.m. 92 188 1,384
8-10 p.m. 30 66 448
10-12 p.m. 44 84 716
__________ __________ __________ _________________
Total: 1,266 2,643 17,906
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 9 516 525
Davis 67 7 74
Irvine 94 0 94
Los Angeles 0 290 290
Riverside 2 8 10
San Diego 147 334 481
San Francisco 8 0 8
Santa Barbara 2 55 57
Santa Cruz 11 93 104
Lawrence Berkeley 0 252 252
Lawrence Livermore 0 18 18
Los Alamos 0 0 0
Other - UC 6 108 114
Other-Network UC n/a 616 616
_______ ______ _____
346 2,297 2,643
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 3,897 3,904
Davis 721 10 731
Irvine 1,211 0 1,211
Los Angeles 0 1,794 1,794
Riverside 14 87 101
San Diego 1,852 2,264 4,116
San Francisco 38 0 38
Santa Barbara 28 484 512
Santa Cruz 31 844 875
Lawrence Berkeley 0 1,288 1,288
Lawrence Livermore 0 197 197
Los Alamos 0 0 0
Other - UC 8 413 421
Other-Network UC n/a 2,718 2,718
_______ ______ _____
3,910 13,996 17,906
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 3.1
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
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Median session length (minutes:seconds) 8:26
Average session length (minutes:seconds) 12:49
Longest session recorded (minutes:seconds) 527:38
Average number of searches completed per session 2.0
Retrievals per search - median 6.0
Retrievals per search - average 403.5
Retrievals per search - standard deviation 3572.1
Percent of searches completed with 0 results 25.7%
Percent of searches entered that are long 7.9%
Percent of long searches completed
(includes partial results) 72.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,433 32.2%
DISPLAY (excluding automatic displays) 2,532 33.5%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 57 0.8%
EXPLAIN 93 1.2%
SET/RESET 748 9.9%
SHOW 18 0.2%
ADD ON (AND, OR, AND NOT) 210 2.8%
LOGON or LOGOFF 1,083 14.3%
COMMENT 0 0.0%
SAVE 73 1.0%
USE 3 0.0%
OTHER 308 4.1%
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 1,241 42.0% 311 25.1% 14 73.5 346.5
TITLE WORD 461 15.6% 217 47.1% 5 349.1 3271.2
EXACT TITLE 29 1.0% 19 65.5% 2 27.2 46.8
JOURNAL 110 3.7% 25 22.7% 7 224.0 914.7
EXACT JOURNAL 30 1.0% 4 13.3% 65 2297.7 4931.8
SUBJECT 100 3.4% 25 25.0% 64 2250.8 6818.2
EXACT SUBJECT 63 2.1% 4 6.3% 18 627.3 2397.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 4 0.1% 0 0.0% 78 6330.5 12505.0
KEYWORD 549 18.6% 83 15.1% 34 1421.3 7657.4
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 38 1.3% 7 18.4% 22 80.4 185.8
DATE 229 7.8% 26 11.4% 52 532.3 2232.9
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 6 0.2% 3 50.0% 45 51.7 31.5
CONFERENCE 8 0.3% 2 25.0% 58 98.7 75.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 7 0.2% 2 28.6% 15 94.6 185.3
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 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 70 2.4% 6 8.6% 9 74.3 261.1
EXACT PE 6 0.2% 1 16.7% 7 30.8 45.4
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 506 21.3% 133 26.3% 15 563.4 3360.3
Single 1,874 78.7% 463 24.7% 17 581.9 4498.6
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 80.5%
LONG 6.5%
TAGS 0.2%
FIELDS 3.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.0%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 44.0%
2. First word of command is invalid 24.8%
3. FIND command with invalid index name 5.7%
4. NS of SHOW/EXP command-no next screen 2.7%
5. PS command - no previous screen 2.5%
6. Invalid SET DB INS command issued 2.5%
7. DISPLAY command contains invalid word 2.3%
8. Search term missing from search command 1.7%
9. DISPLAY command - no FIND results 1.6%
10. Command contains escape or arrow key 1.1%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 21.5%
2. INSPEC BACKFILES 10.8%
3. INSPEC DATABASES 9.7%
4. GUIDE (INSPEC DBS) 7.5%
5. INDEXES (INSPEC DBS) 7.5%
6. 1752 7.5%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 5.4%
8. DATABASES 5.4%
9. LOCATE (INS/PSY DBS) 3.2%
10. 1217 3.2%
11. All others 18.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 35.3%
2. 850 8.7%
3. First word of command is invalid 7.3%
4. NS command - no next screen 6.7%
5. FIND command with zero results 6.0%
6. DISPLAY command-complete in one screen 4.7%
7. DISPLAY command-first of >1 screen 4.7%
8. FIND command with invalid index name 4.0%
9. DISPLAY command - last of >1 screen 4.0%
10. FIND command retrieves >1 book 2.7%
11. All others 16.0%
Ten most frequent SHOW requests:
1. HISTORY 52.9%
2. SEARCH 23.5%
3. MAIL STATUS 17.6%
4. SETTINGS (INS/PSY DBS) 5.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)