MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/02/01 through 06/08/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 178 186
Davis 63 10 73
Irvine 45 0 45
Los Angeles 0 161 161
Riverside 10 4 14
San Diego 57 167 224
San Francisco 33 0 33
Santa Barbara 1 77 78
Santa Cruz 21 11 32
Lawrence Berkeley 0 47 47
Lawrence Livermore 0 30 30
Los Alamos 0 0 0
Other - UC 0 48 48
Other-Network UC n/a 308 308
_______ ______ _____
238 1,041 1,279
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 815 2,198 18,884
INS90 151 305 2,648
INS85 132 279 1,814
INS80 103 224 2,369
INS69 78 187 1,244
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 28 68 293
2-4 a.m. 28 121 579
4-6 a.m. 24 142 414
6-8 a.m. 46 207 1,372
8-10 a.m. 139 325 3,283
10-12 a.m. 236 614 6,634
12-2 p.m. 198 435 4,834
2-4 p.m. 231 510 3,639
4-6 p.m. 203 495 4,001
6-8 p.m. 77 139 943
8-10 p.m. 42 85 633
10-12 p.m. 27 52 334
__________ __________ __________ _________________
Total: 1,279 3,193 26,959
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 18 541 559
Davis 147 30 177
Irvine 102 0 102
Los Angeles 0 376 376
Riverside 14 12 26
San Diego 166 395 561
San Francisco 170 0 170
Santa Barbara 1 196 197
Santa Cruz 28 18 46
Lawrence Berkeley 0 114 114
Lawrence Livermore 0 75 75
Los Alamos 0 0 0
Other - UC 0 132 132
Other-Network UC n/a 658 658
_______ ______ _____
646 2,547 3,193
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 256 4,901 5,157
Davis 2,659 282 2,941
Irvine 773 0 773
Los Angeles 0 3,306 3,306
Riverside 5 25 30
San Diego 765 3,444 4,209
San Francisco 1,263 0 1,263
Santa Barbara 0 1,799 1,799
Santa Cruz 135 387 522
Lawrence Berkeley 0 1,597 1,597
Lawrence Livermore 0 207 207
Los Alamos 0 0 0
Other - UC 0 1,334 1,334
Other-Network UC n/a 3,821 3,821
_______ ______ _____
5,856 21,103 26,959
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 6.3
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) 7:03
Average session length (minutes:seconds) 11:40
Longest session recorded (minutes:seconds) 125:36
Average number of searches completed per session 2.5
Retrievals per search - median 9.0
Retrievals per search - average 1872.9
Retrievals per search - standard deviation 21377
Percent of searches completed with 0 results 24.4%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 64.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,893 32.3%
DISPLAY (excluding automatic displays) 3,124 34.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 50 0.6%
EXPLAIN 74 0.8%
SET/RESET 734 8.2%
SHOW 34 0.4%
ADD ON (AND, OR, AND NOT) 300 3.3%
LOGON or LOGOFF 1,177 13.1%
COMMENT 0 0.0%
SAVE 210 2.3%
USE 3 0.0%
OTHER 366 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 1,299 41.3% 331 25.5% 18 86.3 254.0
TITLE WORD 488 15.5% 195 40.0% 7 79.5 251.1
EXACT TITLE 41 1.3% 18 43.9% 1 10.0 23.3
JOURNAL 91 2.9% 25 27.5% 203 1483.3 4937.9
EXACT JOURNAL 17 0.5% 8 47.1% 375 422.1 274.0
SUBJECT 63 2.0% 17 27.0% 42 499.9 1634.8
EXACT SUBJECT 4 0.1% 3 75.0% 16,344 16344.0 0.0
THESAURUS 5 0.2% 4 80.0% 11,695 11695.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 758 24.1% 111 14.6% 43 6765.6 37696.2
SUBFILE 3 0.1% 1 33.3% 10 9.5 12.0
FORM 10 0.3% 3 30.0% 28 160.1 338.7
DATE 35 1.1% 9 25.7% 18 122.6 189.2
ADDED 13 0.4% 13 100% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 168 5.3% 33 19.6% 18 406.0 1694.6
CONFERENCE 9 0.3% 3 33.3% 315 554.3 752.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 14 0.4% 5 35.7% 76 110.6 128.8
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 99 3.1% 16 16.2% 5 230.0 1439.3
EXACT PE 29 0.9% 6 20.7% 5 67.2 258.4
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 1 0.0% 1 100% 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 289 10.1% 107 37.0% 10 132.0 887.5
Single 2,562 89.9% 585 22.8% 24 2363.7 21801.4
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 3.0%
SHORT 81.9%
LONG 1.5%
TAGS 0.2%
FIELDS 5.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.9%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 45.7%
2. First word of command is invalid 26.8%
3. FIND command with invalid index name 6.0%
4. DISPLAY command contains invalid word 2.4%
5. Max. # of ports to a Z39 db are in use 2.2%
6. PS command - no previous screen 2.1%
7. Search term missing from search command 1.7%
8. DISPLAY command - no FIND results 1.2%
9. DISPLAY command-record numbers too large 1.1%
10. Valid command at an inappropriate time 1.0%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 10.8%
2. INSPEC DATABASES 9.5%
3. INSPEC BACKFILES 9.5%
4. FIND (INSPEC DBS) 9.5%
5. MAIL 8.1%
6. LOCATE (INS/PSY DBS) 6.8%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 5.4%
8. INDEXES (INSPEC DBS) 5.4%
9. DISPLAY (INS/PSY DBS) 5.4%
10. 1752 5.4%
11. All others 24.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 30.6%
2. First word of command is invalid 11.3%
3. FIND command retrieves >1 book 7.3%
4. DISPLAY command-first of >1 screen 6.5%
5. FIND command with invalid index name 4.8%
6. FIND command with zero results 4.8%
7. NS command - no next screen 4.0%
8. DISPLAY command-complete in one screen 4.0%
9. DISPLAY command - last of >1 screen 3.2%
10. Multi-index search with zero results 3.2%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 58.8%
2. SEARCH 17.6%
3. INSPEC NEWS 8.8%
4. INSPEC LOADING STATISTICS 8.8%
5. MAIL STATUS 5.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)