MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/15/01 through 12/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 188 193
Davis 51 2 53
Irvine 37 0 37
Los Angeles 0 60 60
Riverside 0 1 1
San Diego 88 63 151
San Francisco 4 0 4
Santa Barbara 3 42 45
Santa Cruz 5 15 20
Lawrence Berkeley 0 23 23
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 14 14
Other-Network UC n/a 310 310
_______ ______ _____
193 727 920
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 601 1,515 13,229
INS90 131 210 1,198
INS85 72 99 461
INS80 60 92 277
INS69 56 115 836
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 30 237
2-4 a.m. 24 92 830
4-6 a.m. 29 72 279
6-8 a.m. 40 71 445
8-10 a.m. 123 252 1,583
10-12 a.m. 177 347 2,059
12-2 p.m. 137 256 1,989
2-4 p.m. 146 339 2,418
4-6 p.m. 138 298 3,826
6-8 p.m. 35 132 884
8-10 p.m. 22 69 542
10-12 p.m. 35 73 909
__________ __________ __________ _________________
Total: 920 2,031 16,001
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 6 477 483
Davis 101 4 105
Irvine 126 0 126
Los Angeles 0 123 123
Riverside 0 2 2
San Diego 183 129 312
San Francisco 5 0 5
Santa Barbara 5 99 104
Santa Cruz 21 31 52
Lawrence Berkeley 0 40 40
Lawrence Livermore 0 19 19
Los Alamos 0 0 0
Other - UC 0 110 110
Other-Network UC n/a 550 550
_______ ______ _____
447 1,584 2,031
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 70 3,231 3,301
Davis 1,434 5 1,439
Irvine 2,307 0 2,307
Los Angeles 0 1,262 1,262
Riverside 0 8 8
San Diego 1,368 1,334 2,702
San Francisco 19 0 19
Santa Barbara 76 631 707
Santa Cruz 36 220 256
Lawrence Berkeley 0 506 506
Lawrence Livermore 0 94 94
Los Alamos 0 0 0
Other - UC 0 1,413 1,413
Other-Network UC n/a 1,987 1,987
_______ ______ _____
5,310 10,691 16,001
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 2.9
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) 10:42
Average session length (minutes:seconds) 13:26
Longest session recorded (minutes:seconds) 194:10
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 224.3
Retrievals per search - standard deviation 1412.2
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 6.2%
Percent of long searches completed
(includes partial results) 82.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,864 30.4%
DISPLAY (excluding automatic displays) 2,376 38.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 35 0.6%
EXPLAIN 40 0.7%
SET/RESET 518 8.5%
SHOW 7 0.1%
ADD ON (AND, OR, AND NOT) 167 2.7%
LOGON or LOGOFF 827 13.5%
COMMENT 0 0.0%
SAVE 55 0.9%
USE 2 0.0%
OTHER 237 3.9%
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 988 48.1% 216 21.9% 15 87.1 525.0
TITLE WORD 444 21.6% 211 47.5% 5 64.2 201.1
EXACT TITLE 16 0.8% 8 50.0% 1 7.5 16.5
JOURNAL 86 4.2% 35 40.7% 27 565.9 985.3
EXACT JOURNAL 39 1.9% 14 35.9% 193 1358.8 4062.5
SUBJECT 108 5.3% 24 22.2% 22 482.4 1813.0
EXACT SUBJECT 5 0.2% 0 0.0% 83 339.2 460.5
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 1 0.0% 0 0.0% 222 222.0 0.0
KEYWORD 239 11.6% 37 15.5% 63 1201.5 3681.4
SUBFILE 3 0.1% 0 0.0% 30 31.3 9.1
FORM 6 0.3% 0 0.0% 52 127.3 150.9
DATE 29 1.4% 11 37.9% 9 50.9 60.7
ADDED 1 0.0% 0 0.0% 3 3.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 17 0.8% 2 11.8% 19 551.4 1517.3
CONFERENCE 5 0.2% 3 60.0% 1,071 1071.0 1186.5
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 60 2.9% 12 20.0% 7 29.5 55.8
EXACT PE 3 0.1% 0 0.0% 1 2.0 1.7
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 0.2% 1 25.0% 104 80.0 59.7
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 208 11.3% 80 38.5% 7 34.9 83.9
Single 1,630 88.7% 410 25.2% 20 356.5 1795.4
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 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 2.0%
SHORT 85.7%
LONG 3.8%
TAGS 0.5%
FIELDS 3.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.1%
Ten most frequent errors:
1. NS command - no next screen 43.5%
2. First word of command is invalid 28.7%
3. FIND command with invalid index name 6.0%
4. DISPLAY command-record numbers too large 3.0%
5. PS command - no previous screen 2.6%
6. DISPLAY command contains invalid word 1.9%
7. DISPLAY command - no FIND results 1.7%
8. Search term missing from search command 1.7%
9. 1279 1.5%
10. Valid command at an inappropriate time 1.3%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 17.5%
2. INDEXES (INSPEC DBS) 15.0%
3. FIND (INSPEC DBS) 12.5%
4. GUIDE (INSPEC DBS) 10.0%
5. LOCATE (INS/PSY DBS) 5.0%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 5.0%
7. DISPLAY (INS/PSY DBS) 5.0%
8. MAIL 2.5%
9. INSPEC DATABASES 2.5%
10. I017 2.5%
11. All others 22.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 37.3%
2. FIND command with zero results 10.7%
3. DISPLAY command-complete in one screen 8.0%
4. DISPLAY command - middle of >1 screen 6.7%
5. DISPLAY command-first of >1 screen 5.3%
6. Valid command at an inappropriate time 4.0%
7. NS of SHOW/EXP command-no next screen 4.0%
8. First word of command is invalid 2.7%
9. SET DB command entered w/o modifier 2.7%
10. FIND command with invalid index name 2.7%
11. All others 16.0%
Ten most frequent SHOW requests:
1. HISTORY 71.4%
2. INSPEC NEWS 14.3%
3. MAIL STATUS 14.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)