MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/03/01 through 11/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 294 298
Davis 71 8 79
Irvine 84 0 84
Los Angeles 0 112 112
Riverside 2 4 6
San Diego 62 73 135
San Francisco 11 0 11
Santa Barbara 5 67 72
Santa Cruz 3 24 27
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 35 35
Other-Network UC n/a 348 348
_______ ______ _____
242 1,002 1,244
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 776 1,694 14,210
INS90 182 292 2,198
INS85 116 184 1,380
INS80 88 159 662
INS69 82 158 912
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 35 53 282
2-4 a.m. 10 20 288
4-6 a.m. 30 87 716
6-8 a.m. 59 136 1,545
8-10 a.m. 198 323 1,879
10-12 a.m. 221 422 2,901
12-2 p.m. 180 374 2,606
2-4 p.m. 205 420 4,403
4-6 p.m. 173 371 2,634
6-8 p.m. 78 157 1,108
8-10 p.m. 28 63 482
10-12 p.m. 27 61 518
__________ __________ __________ _________________
Total: 1,244 2,487 19,362
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 8 555 563
Davis 205 21 226
Irvine 254 0 254
Los Angeles 0 212 212
Riverside 3 6 9
San Diego 143 143 286
San Francisco 30 0 30
Santa Barbara 10 105 115
Santa Cruz 3 50 53
Lawrence Berkeley 0 82 82
Lawrence Livermore 0 10 10
Los Alamos 0 0 0
Other - UC 0 112 112
Other-Network UC n/a 535 535
_______ ______ _____
656 1,831 2,487
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 49 4,888 4,937
Davis 1,477 375 1,852
Irvine 2,458 0 2,458
Los Angeles 0 1,852 1,852
Riverside 33 21 54
San Diego 813 1,201 2,014
San Francisco 214 0 214
Santa Barbara 23 1,059 1,082
Santa Cruz 1 316 317
Lawrence Berkeley 0 799 799
Lawrence Livermore 0 58 58
Los Alamos 0 0 0
Other - UC 0 684 684
Other-Network UC n/a 3,041 3,041
_______ ______ _____
5,068 14,294 19,362
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 2.7
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) 9:19
Average session length (minutes:seconds) 14:06
Longest session recorded (minutes:seconds) 502:49
Average number of searches completed per session 2.0
Retrievals per search - median 4.0
Retrievals per search - average 273.7
Retrievals per search - standard deviation 3116.0
Percent of searches completed with 0 results 29.9%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 78.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,350 30.9%
DISPLAY (excluding automatic displays) 2,825 37.1%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 49 0.6%
EXPLAIN 73 1.0%
SET/RESET 775 10.2%
SHOW 10 0.1%
ADD ON (AND, OR, AND NOT) 137 1.8%
LOGON or LOGOFF 1,019 13.4%
COMMENT 0 0.0%
SAVE 57 0.7%
USE 1 0.0%
OTHER 313 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 1,133 43.6% 293 25.9% 13 72.1 381.5
TITLE WORD 474 18.2% 228 48.1% 5 70.4 180.1
EXACT TITLE 21 0.8% 18 85.7% 1 2.0 1.7
JOURNAL 71 2.7% 35 49.3% 24 6279.9 22389.8
EXACT JOURNAL 32 1.2% 25 78.1% 83 559.3 754.4
SUBJECT 86 3.3% 27 31.4% 6 317.5 2126.4
EXACT SUBJECT 1 0.0% 0 0.0% 1,190 1190.0 0.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 5 0.2% 1 20.0% 16,363 12613.8 7498.5
KEYWORD 567 21.8% 143 25.2% 22 633.8 2860.0
SUBFILE 1 0.0% 1 100% 0 0.0 0.0
FORM 26 1.0% 8 30.8% 10 212.3 648.5
DATE 39 1.5% 13 33.3% 10 61.3 135.1
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. 16 0.6% 2 12.5% 16 211.5 641.5
CONFERENCE 18 0.7% 5 27.8% 122 273.3 410.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 0 0.0% 0 0.0% 0 0.0 0.0
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 89 3.4% 14 15.7% 5 38.9 112.2
EXACT PE 20 0.8% 1 5.0% 5 8.1 9.3
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 0.0% 0 0.0% 180 180.0 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 267 11.5% 106 39.7% 5 149.3 1306.7
Single 2,064 88.5% 601 29.1% 16 419.8 3968.0
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% 18 18.0 15.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 84.9%
LONG 3.0%
TAGS 0.3%
FIELDS 2.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 42.1%
2. First word of command is invalid 34.2%
3. FIND command with invalid index name 6.8%
4. DISPLAY command contains invalid word 3.0%
5. DISPLAY command-record numbers too large 1.2%
6. PS command - no previous screen 1.2%
7. Search term missing from search command 1.2%
8. DISPLAY command - no FIND results 0.9%
9. Valid command at an inappropriate time 0.7%
10. Add-on search, no index name after verb 0.7%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 24.7%
2. INSPEC DATABASES 11.0%
3. FIND (INSPEC DBS) 11.0%
4. DATABASES 6.8%
5. INSPEC BACKFILES 5.5%
6. DISPLAY (INS/PSY DBS) 5.5%
7. INDEXES (INSPEC DBS) 4.1%
8. Unrecognized term 4.1%
9. 1752 4.1%
10. G124 2.7%
11. All others 20.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.9%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 10.7%
4. DISPLAY command-first of >1 screen 9.8%
5. DISPLAY command - middle of >1 screen 6.6%
6. DISPLAY command-complete in one screen 4.9%
7. NS command - no next screen 4.1%
8. F/BR command with invalid search term 4.1%
9. FIND command with zero results 3.3%
10. Multi-index search with zero results 2.5%
11. All others 13.1%
Ten most frequent SHOW requests:
1. HISTORY 70.0%
2. GLOSSARY 10.0%
3. MAIL SETTINGS 10.0%
4. MAIL STATUS 10.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)