MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 08/18/01 through 08/24/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 285 287
Davis 31 2 33
Irvine 122 0 122
Los Angeles 0 68 68
Riverside 2 6 8
San Diego 41 101 142
San Francisco 9 0 9
Santa Barbara 2 42 44
Santa Cruz 0 41 41
Lawrence Berkeley 0 29 29
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 0 26 26
Other-Network UC n/a 322 322
_______ ______ _____
209 960 1,169
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 746 1,745 14,088
INS90 162 311 1,326
INS85 112 197 1,169
INS80 82 123 345
INS69 67 166 741
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 34 286
2-4 a.m. 8 22 309
4-6 a.m. 9 31 175
6-8 a.m. 39 110 409
8-10 a.m. 141 325 1,657
10-12 a.m. 273 516 2,851
12-2 p.m. 152 325 2,905
2-4 p.m. 190 394 4,099
4-6 p.m. 166 343 2,072
6-8 p.m. 104 233 1,367
8-10 p.m. 38 114 759
10-12 p.m. 33 95 780
__________ __________ __________ _________________
Total: 1,169 2,542 17,669
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 3 607 610
Davis 108 4 112
Irvine 255 0 255
Los Angeles 0 277 277
Riverside 7 8 15
San Diego 99 169 268
San Francisco 26 0 26
Santa Barbara 2 82 84
Santa Cruz 0 119 119
Lawrence Berkeley 0 47 47
Lawrence Livermore 0 106 106
Los Alamos 0 0 0
Other - UC 0 59 59
Other-Network UC n/a 564 564
_______ ______ _____
500 2,042 2,542
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 6,637 6,637
Davis 653 0 653
Irvine 1,696 0 1,696
Los Angeles 0 1,496 1,496
Riverside 20 40 60
San Diego 263 1,346 1,609
San Francisco 72 0 72
Santa Barbara 4 969 973
Santa Cruz 0 772 772
Lawrence Berkeley 0 521 521
Lawrence Livermore 0 1,036 1,036
Los Alamos 0 0 0
Other - UC 0 404 404
Other-Network UC n/a 1,740 1,740
_______ ______ _____
2,708 14,961 17,669
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 6.1
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) 9:45
Average session length (minutes:seconds) 13:12
Longest session recorded (minutes:seconds) 521:00
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 1452.5
Retrievals per search - standard deviation 23893
Percent of searches completed with 0 results 28.4%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 72.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,303 31.4%
DISPLAY (excluding automatic displays) 2,637 36.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 46 0.6%
EXPLAIN 76 1.0%
SET/RESET 736 10.0%
SHOW 32 0.4%
ADD ON (AND, OR, AND NOT) 239 3.3%
LOGON or LOGOFF 930 12.7%
COMMENT 0 0.0%
SAVE 49 0.7%
USE 0 0.0%
OTHER 283 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 1,148 45.9% 259 22.6% 14 154.7 1214.5
TITLE WORD 566 22.6% 294 51.9% 3 86.6 500.6
EXACT TITLE 38 1.5% 24 63.2% 1 4.6 6.2
JOURNAL 68 2.7% 29 42.6% 27 229.2 481.0
EXACT JOURNAL 17 0.7% 12 70.6% 212 363.2 299.4
SUBJECT 74 3.0% 18 24.3% 15 507.7 2406.9
EXACT SUBJECT 5 0.2% 1 20.0% 6 4216.8 8423.5
THESAURUS 9 0.4% 0 0.0% 30 1394.2 4021.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 372 14.9% 54 14.5% 38 5401.2 46985.5
SUBFILE 9 0.4% 0 0.0% 8 29.4 42.3
FORM 7 0.3% 0 0.0% 25 70.4 81.5
DATE 24 1.0% 6 25.0% 9 23.3 31.7
ADDED 12 0.5% 6 50.0% 23 20.0 9.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 28 1.1% 5 17.9% 9 40.6 58.9
CONFERENCE 4 0.2% 2 50.0% 436 435.5 335.9
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 27 1.1% 5 18.5% 3,880 3198.2 2983.4
ISSN 1 0.0% 0 0.0% 307 307.0 0.0
ISBN 1 0.0% 0 0.0% 58 58.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 67 2.7% 12 17.9% 3 15.7 47.3
EXACT PE 23 0.9% 1 4.3% 4 10.4 19.7
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 1 0.0% 0 0.0% 15 15.0 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 225 9.9% 78 34.7% 7 106.3 998.3
Single 2,047 90.1% 571 27.9% 16 1348.9 21919.9
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 6.7%
SHORT 81.4%
LONG 2.4%
TAGS 0.0%
FIELDS 3.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 45.4%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 6.0%
4. Search term missing from search command 2.3%
5. DISPLAY command contains invalid word 2.1%
6. Max. # of ports to a Z39 db are in use 2.1%
7. NS of SHOW/EXP command-no next screen 2.0%
8. Valid command at an inappropriate time 1.8%
9. PS command - no previous screen 1.7%
10. Add-on search, no index name after verb 1.2%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 17.1%
2. FIND (INSPEC DBS) 11.8%
3. GUIDE (INSPEC DBS) 9.2%
4. INDEXES (INSPEC DBS) 7.9%
5. DATABASES 7.9%
6. MAIL 6.6%
7. INSPEC BACKFILES 6.6%
8. DISPLAY (INS/PSY DBS) 3.9%
9. 1752 3.9%
10. CHEMICAL NAMES 2.6%
11. All others 22.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 32.8%
2. FIND command with zero results 13.1%
3. First word of command is invalid 12.3%
4. NS command - no next screen 7.4%
5. FIND command with invalid index name 4.9%
6. Add-on search retrieves >1 record 4.9%
7. DISPLAY command-complete in one screen 4.1%
8. DISPLAY command - middle of >1 screen 3.3%
9. DISPLAY command - last of >1 screen 3.3%
10. NS of SHOW/EXP command-no next screen 3.3%
11. All others 10.7%
Ten most frequent SHOW requests:
1. HISTORY 46.9%
2. MAIL STATUS 43.8%
3. INSPEC LOADING STATISTICS 6.3%
4. INSPEC NEWS 3.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)