MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/01/01 through 12/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 17 755 772
Davis 277 8 285
Irvine 152 0 152
Los Angeles 2 319 321
Riverside 4 26 30
San Diego 239 314 553
San Francisco 37 0 37
Santa Barbara 6 140 146
Santa Cruz 7 86 93
Lawrence Berkeley 0 97 97
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 0 59 59
Other-Network UC n/a 1,262 1,262
_______ ______ _____
741 3,104 3,845
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 2,437 5,570 46,580
INS90 521 927 5,215
INS85 330 482 2,370
INS80 285 489 1,463
INS69 272 587 3,979
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 54 107 651
2-4 a.m. 57 157 1,516
4-6 a.m. 68 149 919
6-8 a.m. 122 238 1,576
8-10 a.m. 406 782 5,159
10-12 a.m. 778 1,554 9,297
12-2 p.m. 575 1,204 9,805
2-4 p.m. 716 1,498 10,187
4-6 p.m. 583 1,250 10,226
6-8 p.m. 228 543 4,798
8-10 p.m. 151 356 3,367
10-12 p.m. 107 217 2,106
__________ __________ __________ _________________
Total: 3,845 8,055 59,607
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 34 1,812 1,846
Davis 514 19 533
Irvine 414 0 414
Los Angeles 4 687 691
Riverside 9 60 69
San Diego 505 664 1,169
San Francisco 79 0 79
Santa Barbara 18 294 312
Santa Cruz 28 161 189
Lawrence Berkeley 0 274 274
Lawrence Livermore 0 83 83
Los Alamos 0 0 0
Other - UC 0 246 246
Other-Network UC n/a 2,150 2,150
_______ ______ _____
1,605 6,450 8,055
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 192 13,622 13,814
Davis 4,665 40 4,705
Irvine 6,016 0 6,016
Los Angeles 25 6,070 6,095
Riverside 6 317 323
San Diego 3,306 6,250 9,556
San Francisco 195 0 195
Santa Barbara 89 1,901 1,990
Santa Cruz 45 1,330 1,375
Lawrence Berkeley 0 3,068 3,068
Lawrence Livermore 0 535 535
Los Alamos 0 0 0
Other - UC 0 2,919 2,919
Other-Network UC n/a 9,016 9,016
_______ ______ _____
14,539 45,068 59,607
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 3.2
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
_________________________________________
Median session length (minutes:seconds) 8:33
Average session length (minutes:seconds) 14:08
Longest session recorded (minutes:seconds) 1240
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 436.8
Retrievals per search - standard deviation 7943.7
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 6.2%
Percent of long searches completed
(includes partial results) 81.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7,296 30.3%
DISPLAY (excluding automatic displays) 8,920 37.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 137 0.6%
EXPLAIN 251 1.0%
SET/RESET 2,315 9.6%
SHOW 35 0.1%
ADD ON (AND, OR, AND NOT) 759 3.1%
LOGON or LOGOFF 3,247 13.5%
COMMENT 0 0.0%
SAVE 206 0.9%
USE 4 0.0%
OTHER 940 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 3,676 45.0% 858 23.3% 16 72.7 354.1
TITLE WORD 1,828 22.4% 881 48.2% 5 71.7 254.7
EXACT TITLE 36 0.4% 22 61.1% 1 5.8 12.5
JOURNAL 300 3.7% 115 38.3% 13 1873.5 7009.1
EXACT JOURNAL 105 1.3% 50 47.6% 92 1086.9 3700.9
SUBJECT 395 4.8% 96 24.3% 29 718.8 2466.9
EXACT SUBJECT 21 0.3% 0 0.0% 74 461.0 1080.9
THESAURUS 2 0.0% 1 50.0% 1,957 1957.0 0.0
EXACT THESAURUS 1 0.0% 0 0.0% 222 222.0 0.0
KEYWORD 1,142 14.0% 188 16.5% 33 2556.5 22467.2
SUBFILE 4 0.0% 0 0.0% 36 36.0 11.9
FORM 82 1.0% 15 18.3% 6 36.7 71.8
DATE 165 2.0% 48 29.1% 8 260.0 751.1
ADDED 1 0.0% 0 0.0% 3 3.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 88 1.1% 26 29.5% 13 159.4 762.1
CONFERENCE 30 0.4% 13 43.3% 58 210.4 446.4
LANGUAGE 1 0.0% 0 0.0% 42,401 42401.0 0.0
CHEMICAL NAME 23 0.3% 6 26.1% 68 1207.8 2515.4
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 3 0.0% 2 66.7% 69 69.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 228 2.8% 44 19.3% 6 42.2 114.1
EXACT PE 20 0.2% 4 20.0% 4 5.2 4.7
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 10 0.1% 2 20.0% 78 69.6 45.8
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 932 12.9% 339 36.4% 5 93.6 490.8
Single 6,272 87.1% 1,684 26.8% 20 729.2 10435.4
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 2.0%
SHORT 85.0%
LONG 2.9%
TAGS 0.5%
FIELDS 4.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 41.9%
2. First word of command is invalid 30.4%
3. FIND command with invalid index name 5.9%
4. Max. # of ports to a Z39 db are in use 3.7%
5. DISPLAY command contains invalid word 2.6%
6. PS command - no previous screen 1.6%
7. DISPLAY command-record numbers too large 1.2%
8. Search term missing from search command 1.2%
9. Valid command at an inappropriate time 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 18.7%
2. INSPEC DATABASES 14.7%
3. GUIDE (INSPEC DBS) 11.6%
4. INSPEC BACKFILES 10.8%
5. INDEXES (INSPEC DBS) 6.8%
6. DISPLAY (INS/PSY DBS) 4.0%
7. Unrecognized term 3.6%
8. LOCATE (INS/PSY DBS) 3.2%
9. FIND (INSPEC DBS) 3.2%
10. MAIL 2.8%
11. All others 20.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 32.5%
2. First word of command is invalid 7.5%
3. FIND command with zero results 6.4%
4. DISPLAY command - middle of >1 screen 6.4%
5. DISPLAY command - last of >1 screen 5.9%
6. NS command - no next screen 4.9%
7. DISPLAY command-first of >1 screen 4.6%
8. DISPLAY command-complete in one screen 4.4%
9. FIND command retrieves >1 book 4.1%
10. FIND command with invalid index name 3.9%
11. All others 19.3%
Ten most frequent SHOW requests:
1. HISTORY 77.1%
2. SEARCH 8.6%
3. INSPEC LOADING STATISTICS 5.7%
4. INSPEC NEWS 2.9%
5. MAIL STATUS 2.9%
6. DATABASES 2.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)