MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/15/02 through 06/21/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 237 242
Davis 17 0 17
Irvine 39 0 39
Los Angeles 0 98 98
Riverside 1 5 6
San Diego 16 147 163
San Francisco 0 0 0
Santa Barbara 5 19 24
Santa Cruz 0 22 22
Lawrence Berkeley 0 12 12
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 1 17 18
Other-Network UC n/a 132 132
_______ ______ _____
84 697 781
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 474 1,262 13,208
INS90 120 208 1,751
INS85 79 120 894
INS80 59 109 358
INS69 49 94 595
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 39 569
2-4 a.m. 25 57 425
4-6 a.m. 20 77 591
6-8 a.m. 36 71 565
8-10 a.m. 98 204 1,337
10-12 a.m. 136 304 3,118
12-2 p.m. 101 226 861
2-4 p.m. 151 313 3,829
4-6 p.m. 104 224 2,584
6-8 p.m. 39 120 1,697
8-10 p.m. 28 52 618
10-12 p.m. 27 106 612
__________ __________ __________ _________________
Total: 781 1,793 16,806
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 4 513 517
Davis 48 0 48
Irvine 99 0 99
Los Angeles 0 225 225
Riverside 1 15 16
San Diego 44 403 447
San Francisco 0 0 0
Santa Barbara 5 32 37
Santa Cruz 0 31 31
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 1 59 60
Other-Network UC n/a 254 254
_______ ______ _____
202 1,591 1,793
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 6,561 6,604
Davis 351 0 351
Irvine 1,597 0 1,597
Los Angeles 0 1,705 1,705
Riverside 0 47 47
San Diego 341 2,874 3,215
San Francisco 0 0 0
Santa Barbara 36 488 524
Santa Cruz 0 275 275
Lawrence Berkeley 0 439 439
Lawrence Livermore 0 89 89
Los Alamos 0 0 0
Other - UC 0 484 484
Other-Network UC n/a 1,476 1,476
_______ ______ _____
2,368 14,438 16,806
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 2.7
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) 11:46
Average session length (minutes:seconds) 19:07
Longest session recorded (minutes:seconds) 585:47
Average number of searches completed per session 2.3
Retrievals per search - median 4.0
Retrievals per search - average 524.8
Retrievals per search - standard deviation 7711.7
Percent of searches completed with 0 results 27.9%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 79.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,677 31.4%
DISPLAY (excluding automatic displays) 2,113 39.6%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 28 0.5%
EXPLAIN 52 1.0%
SET/RESET 469 8.8%
SHOW 10 0.2%
ADD ON (AND, OR, AND NOT) 116 2.2%
LOGON or LOGOFF 660 12.4%
COMMENT 0 0.0%
SAVE 26 0.5%
USE 0 0.0%
OTHER 188 3.5%
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 779 40.9% 190 24.4% 14 75.9 297.1
TITLE WORD 376 19.8% 142 37.8% 4 249.4 1589.5
EXACT TITLE 13 0.7% 5 38.5% 3 15.8 36.1
JOURNAL 155 8.1% 46 29.7% 6 315.2 1773.8
EXACT JOURNAL 31 1.6% 15 48.4% 28 1204.8 3472.1
SUBJECT 43 2.3% 21 48.8% 6 21.8 38.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 316 16.6% 74 23.4% 20 3168.0 20613.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 0 0.0% 0 0.0% 0 0.0 0.0
DATE 27 1.4% 2 7.4% 96 874.1 1493.0
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. 17 0.9% 1 5.9% 28 149.7 264.1
CONFERENCE 9 0.5% 4 44.4% 169 300.2 412.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 34 1.8% 16 47.1% 13 23.9 24.6
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 81 4.3% 10 12.3% 5 64.2 236.2
EXACT PE 22 1.2% 4 18.2% 1 29.4 55.7
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 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 239 14.4% 73 30.5% 7 152.9 652.0
Single 1,423 85.6% 383 26.9% 14 869.7 10061.8
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 4.2%
SHORT 81.7%
LONG 3.6%
TAGS 0.3%
FIELDS 3.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.4%
COMMENTS 0.0%
Other 0.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 39.5%
2. First word of command is invalid 23.7%
3. 167 6.6%
4. FIND command with invalid index name 6.0%
5. DISPLAY command contains invalid word 2.6%
6. PS command - no previous screen 2.4%
7. NS of SHOW/EXP command-no next screen 2.3%
8. Invalid SET DB INS command issued 2.3%
9. DISPLAY command - no FIND results 1.7%
10. Add-on search, no index name after verb 1.7%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 23.1%
2. INSPEC DATABASES 9.6%
3. INDEXES (INSPEC DBS) 9.6%
4. MAIL 7.7%
5. GUIDE (INSPEC DBS) 7.7%
6. DATABASES 7.7%
7. LOCATE (INS/PSY DBS) 3.8%
8. INSPEC BACKFILES 3.8%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.8%
10. 1568 3.8%
11. All others 19.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.5%
2. First word of command is invalid 18.8%
3. FIND command with invalid index name 7.5%
4. DISPLAY command - middle of >1 screen 7.5%
5. 3 HELP commands issued from same code 5.0%
6. NS of SHOW/EXP command-no next screen 5.0%
7. FIND command with zero results 3.8%
8. DISPLAY command-first of >1 screen 3.8%
9. Multi-index search with zero results 3.8%
10. FIND command retrieves >1 book 2.5%
11. All others 20.0%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. MAIL STATUS 30.0%
3. INSPEC NEWS 10.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)