MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/01/01 through 06/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 30 1,028 1,058
Davis 255 17 272
Irvine 314 0 314
Los Angeles 0 558 558
Riverside 20 19 39
San Diego 246 574 820
San Francisco 116 0 116
Santa Barbara 8 279 287
Santa Cruz 39 75 114
Lawrence Berkeley 0 160 160
Lawrence Livermore 0 144 144
Los Alamos 0 0 0
Other - UC 2 225 227
Other-Network UC n/a 1,757 1,757
_______ ______ _____
1,030 4,836 5,866
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,646 8,922 75,838
INS90 817 1,676 9,395
INS85 582 1,067 5,412
INS80 451 842 4,832
INS69 370 815 6,060
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 150 358 2,863
2-4 a.m. 137 414 2,693
4-6 a.m. 122 494 2,548
6-8 a.m. 241 642 4,447
8-10 a.m. 653 1,455 9,370
10-12 a.m. 1,157 2,479 21,003
12-2 p.m. 899 1,893 15,245
2-4 p.m. 1,064 2,390 18,006
4-6 p.m. 815 1,742 14,349
6-8 p.m. 332 778 5,439
8-10 p.m. 134 302 2,580
10-12 p.m. 162 375 2,994
__________ __________ __________ _________________
Total: 5,866 13,322 101,537
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 64 2,487 2,551
Davis 644 48 692
Irvine 788 0 788
Los Angeles 0 1,233 1,233
Riverside 33 50 83
San Diego 622 1,283 1,905
San Francisco 431 0 431
Santa Barbara 16 637 653
Santa Cruz 74 156 230
Lawrence Berkeley 0 331 331
Lawrence Livermore 0 404 404
Los Alamos 0 0 0
Other - UC 6 630 636
Other-Network UC n/a 3,385 3,385
_______ ______ _____
2,678 10,644 13,322
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 356 18,877 19,233
Davis 7,500 312 7,812
Irvine 9,656 0 9,656
Los Angeles 0 10,023 10,023
Riverside 168 173 341
San Diego 3,100 10,955 14,055
San Francisco 2,886 0 2,886
Santa Barbara 262 5,130 5,392
Santa Cruz 238 1,474 1,712
Lawrence Berkeley 0 4,402 4,402
Lawrence Livermore 0 2,136 2,136
Los Alamos 0 0 0
Other - UC 5 6,084 6,089
Other-Network UC n/a 17,800 17,800
_______ ______ _____
24,171 77,366 101,537
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 5.7
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
_________________________________________
Median session length (minutes:seconds) 7:41
Average session length (minutes:seconds) 12:09
Longest session recorded (minutes:seconds) 481:45
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1346.2
Retrievals per search - standard deviation 19577
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 5.0%
Percent of long searches completed
(includes partial results) 73.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,928 31.0%
DISPLAY (excluding automatic displays) 13,805 35.9%
BROWSE 19 0.0%
SELECT 0 0.0%
HELP 226 0.6%
EXPLAIN 301 0.8%
SET/RESET 3,481 9.0%
SHOW 127 0.3%
ADD ON (AND, OR, AND NOT) 1,394 3.6%
LOGON or LOGOFF 5,106 13.3%
COMMENT 0 0.0%
SAVE 572 1.5%
USE 11 0.0%
OTHER 1,542 4.0%
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 5,477 42.3% 1,290 23.6% 16 99.7 712.5
TITLE WORD 2,648 20.5% 1,215 45.9% 5 143.0 1710.4
EXACT TITLE 128 1.0% 76 59.4% 2 13.9 26.1
JOURNAL 373 2.9% 151 40.5% 201 3976.2 12629.4
EXACT JOURNAL 79 0.6% 36 45.6% 375 1631.4 3713.1
SUBJECT 356 2.8% 111 31.2% 16 724.3 4110.7
EXACT SUBJECT 33 0.3% 10 30.3% 18 3377.6 6199.4
THESAURUS 29 0.2% 9 31.0% 245 7762.2 16261.6
EXACT THESAURUS 4 0.0% 0 0.0% 12,838 9712.8 6269.8
KEYWORD 2,621 20.2% 468 17.9% 36 5200.4 37454.5
SUBFILE 15 0.1% 1 6.7% 56 1111.4 2679.1
FORM 60 0.5% 8 13.3% 33 470.4 2491.5
DATE 159 1.2% 50 31.4% 16 104.8 234.4
ADDED 53 0.4% 39 73.6% 6 10.1 8.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 301 2.3% 72 23.9% 11 317.0 1391.2
CONFERENCE 68 0.5% 17 25.0% 453 1328.0 3013.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 53 0.4% 19 35.8% 41 108.1 218.3
ISSN 1 0.0% 1 100% 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 418 3.2% 86 20.6% 7 110.1 743.2
EXACT PE 65 0.5% 11 16.9% 5 45.4 174.1
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 0.0% 1 25.0% 29 26.7 4.0
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 1,162 9.9% 419 36.1% 6 286.7 2572.2
Single 10,590 90.1% 2,817 26.6% 19 1676.3 19987.5
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 19 100% 10 52.6% 3 39.6 60.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 82.4%
LONG 2.8%
TAGS 0.1%
FIELDS 5.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. First word of command is invalid 38.5%
2. NS command - no next screen 37.2%
3. FIND command with invalid index name 4.9%
4. Max. # of ports to a Z39 db are in use 3.3%
5. DISPLAY command contains invalid word 2.2%
6. PS command - no previous screen 1.5%
7. Search term missing from search command 1.1%
8. DISPLAY command - no FIND results 1.0%
9. Add-on search, no index name after verb 1.0%
10. DISPLAY command-record numbers too large 0.7%
11. All others 8.6%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 15.3%
2. FIND (INSPEC DBS) 12.0%
3. INSPEC DATABASES 11.3%
4. DATABASES 7.0%
5. 1752 6.6%
6. GUIDE (INSPEC DBS) 6.3%
7. MAIL 5.0%
8. INDEXES (INSPEC DBS) 5.0%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 4.0%
10. Unrecognized term 3.0%
11. All others 24.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.4%
2. First word of command is invalid 14.2%
3. FIND command with invalid index name 7.4%
4. NS command - no next screen 6.3%
5. FIND command with zero results 5.9%
6. DISPLAY command-first of >1 screen 4.6%
7. DISPLAY command - middle of >1 screen 4.6%
8. FIND command retrieves >1 book 4.2%
9. Multi-index search with zero results 3.0%
10. DISPLAY command - last of >1 screen 2.8%
11. All others 21.6%
Ten most frequent SHOW requests:
1. HISTORY 66.1%
2. SEARCH 14.0%
3. INSPEC LOADING STATISTICS 7.4%
4. INSPEC NEWS 6.6%
5. MAIL STATUS 2.5%
6. SYSTEM NEWS 1.7%
7. GLOSSARY 0.8%
8. DATABASES 0.8%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)