MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/01/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 31 916 947
Davis 150 7 157
Irvine 198 0 198
Los Angeles 1 399 400
Riverside 1 38 39
San Diego 212 419 631
San Francisco 23 0 23
Santa Barbara 5 106 111
Santa Cruz 27 93 120
Lawrence Berkeley 0 144 144
Lawrence Livermore 0 105 105
Los Alamos 0 0 0
Other - UC 4 156 160
Other-Network UC n/a 552 552
_______ ______ _____
652 2,935 3,587
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 2,335 5,392 59,878
INS90 467 767 5,262
INS85 320 555 3,228
INS80 237 374 1,783
INS69 228 427 3,501
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 110 240 1,655
2-4 a.m. 81 169 2,570
4-6 a.m. 65 129 2,394
6-8 a.m. 149 358 2,990
8-10 a.m. 494 912 11,028
10-12 a.m. 632 1,303 13,054
12-2 p.m. 534 1,157 11,316
2-4 p.m. 619 1,335 10,864
4-6 p.m. 485 985 9,812
6-8 p.m. 160 371 3,607
8-10 p.m. 160 326 2,942
10-12 p.m. 98 230 1,420
__________ __________ __________ _________________
Total: 3,587 7,515 73,652
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 76 2,023 2,099
Davis 301 10 311
Irvine 523 0 523
Los Angeles 1 843 844
Riverside 2 78 80
San Diego 423 917 1,340
San Francisco 57 0 57
Santa Barbara 9 232 241
Santa Cruz 65 191 256
Lawrence Berkeley 0 293 293
Lawrence Livermore 0 184 184
Los Alamos 0 0 0
Other - UC 10 319 329
Other-Network UC n/a 958 958
_______ ______ _____
1,467 6,048 7,515
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 582 24,604 25,186
Davis 2,780 14 2,794
Irvine 8,475 0 8,475
Los Angeles 0 6,774 6,774
Riverside 0 614 614
San Diego 3,140 8,851 11,991
San Francisco 202 0 202
Santa Barbara 25 1,812 1,837
Santa Cruz 181 1,103 1,284
Lawrence Berkeley 0 4,990 4,990
Lawrence Livermore 0 1,187 1,187
Los Alamos 0 0 0
Other - UC 84 2,217 2,301
Other-Network UC n/a 6,017 6,017
_______ ______ _____
15,469 58,183 73,652
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 2.2
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) 8:45
Average session length (minutes:seconds) 12:34
Longest session recorded (minutes:seconds) 501:34
Average number of searches completed per session 2.1
Retrievals per search - median 7.0
Retrievals per search - average 337.4
Retrievals per search - standard deviation 3191.6
Percent of searches completed with 0 results 24.2%
Percent of searches entered that are long 5.1%
Percent of long searches completed
(includes partial results) 73.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7,045 29.5%
DISPLAY (excluding automatic displays) 9,201 38.5%
BROWSE 2 0.0%
SELECT 1 0.0%
HELP 158 0.7%
EXPLAIN 234 1.0%
SET/RESET 1,890 7.9%
SHOW 63 0.3%
ADD ON (AND, OR, AND NOT) 470 2.0%
LOGON or LOGOFF 3,598 15.1%
COMMENT 0 0.0%
SAVE 211 0.9%
USE 1 0.0%
OTHER 1,007 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 3,362 43.4% 772 23.0% 15 84.7 389.4
TITLE WORD 1,203 15.5% 468 38.9% 6 78.5 307.4
EXACT TITLE 53 0.7% 30 56.6% 1 37.0 140.3
JOURNAL 214 2.8% 75 35.0% 15 2383.5 13339.2
EXACT JOURNAL 83 1.1% 29 34.9% 8 550.5 1324.6
SUBJECT 360 4.6% 115 31.9% 15 421.8 2108.1
EXACT SUBJECT 12 0.2% 1 8.3% 564 1701.8 2573.9
THESAURUS 21 0.3% 1 4.8% 238 2861.0 5293.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 1,859 24.0% 332 17.9% 21 1056.0 5511.7
SUBFILE 2 0.0% 0 0.0% 48 48.0 36.8
FORM 27 0.3% 3 11.1% 4 54.2 188.2
DATE 104 1.3% 27 26.0% 17 60.4 105.7
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. 107 1.4% 29 27.1% 25 262.1 1296.1
CONFERENCE 36 0.5% 9 25.0% 18 330.1 786.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 44 0.6% 15 34.1% 8 47.3 94.0
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 5 0.1% 0 0.0% 75 174.2 135.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 206 2.7% 28 13.6% 6 38.6 142.0
EXACT PE 36 0.5% 3 8.3% 4 29.8 53.4
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 14 0.2% 0 0.0% 5 19.1 39.6
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 793 11.4% 259 32.7% 4 32.8 117.6
Single 6,145 88.6% 1,418 23.1% 18 516.5 3978.5
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 50.0% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 1 50.0% 0 0.0% 3 3.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 83.3%
LONG 4.3%
TAGS 0.7%
FIELDS 2.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. First word of command is invalid 38.8%
2. NS command - no next screen 37.0%
3. FIND command with invalid index name 5.1%
4. DISPLAY command contains invalid word 2.7%
5. 167 2.5%
6. Search term missing from search command 1.7%
7. PS command - no previous screen 1.4%
8. Valid command at an inappropriate time 1.0%
9. DISPLAY command-record numbers too large 0.9%
10. DISPLAY command - no FIND results 0.8%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.8%
2. INSPEC DATABASES 11.1%
3. GUIDE (INSPEC DBS) 10.7%
4. INSPEC BACKFILES 9.8%
5. INDEXES (INSPEC DBS) 9.4%
6. MAIL 5.6%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 5.6%
8. Unrecognized term 4.3%
9. LOCATE (INS/PSY DBS) 3.4%
10. DATABASES 3.0%
11. All others 21.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.1%
2. First word of command is invalid 11.5%
3. FIND command with zero results 7.7%
4. FIND command with invalid index name 6.9%
5. DISPLAY command - middle of >1 screen 5.4%
6. DISPLAY command-complete in one screen 4.6%
7. DISPLAY command-first of >1 screen 4.3%
8. FIND command retrieves >1 book 4.1%
9. DISPLAY command - last of >1 screen 4.1%
10. NS command - no next screen 3.3%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 43.3%
2. MAIL STATUS 36.7%
3. INSPEC NEWS 5.0%
4. MAIL SETTINGS 5.0%
5. SEARCH 3.3%
6. IAC NEWS 1.7%
7. SETTINGS (INS/PSY DBS) 1.7%
8. SYSTEM NEWS 1.7%
9. DATABASES 1.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)