MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 10/20/01 through 10/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 267 279
Davis 79 2 81
Irvine 52 0 52
Los Angeles 1 65 66
Riverside 1 9 10
San Diego 49 102 151
San Francisco 20 0 20
Santa Barbara 3 33 36
Santa Cruz 3 28 31
Lawrence Berkeley 0 35 35
Lawrence Livermore 0 48 48
Los Alamos 0 0 0
Other - UC 0 22 22
Other-Network UC n/a 481 481
_______ ______ _____
220 1,092 1,312
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 822 1,920 15,356
INS90 180 289 2,428
INS85 126 179 654
INS80 96 169 440
INS69 88 174 917
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 40 252
2-4 a.m. 20 40 310
4-6 a.m. 20 49 421
6-8 a.m. 58 91 313
8-10 a.m. 194 420 2,367
10-12 a.m. 233 502 3,728
12-2 p.m. 202 403 2,557
2-4 p.m. 239 469 3,866
4-6 p.m. 190 405 3,508
6-8 p.m. 57 128 1,343
8-10 p.m. 29 79 506
10-12 p.m. 53 105 624
__________ __________ __________ _________________
Total: 1,312 2,731 19,795
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 47 570 617
Davis 233 4 237
Irvine 153 0 153
Los Angeles 1 143 144
Riverside 1 18 19
San Diego 144 238 382
San Francisco 28 0 28
Santa Barbara 5 67 72
Santa Cruz 8 68 76
Lawrence Berkeley 0 61 61
Lawrence Livermore 0 84 84
Los Alamos 0 0 0
Other - UC 0 53 53
Other-Network UC n/a 805 805
_______ ______ _____
620 2,111 2,731
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 275 6,532 6,807
Davis 1,447 1 1,448
Irvine 1,417 0 1,417
Los Angeles 6 1,035 1,041
Riverside 6 86 92
San Diego 556 2,100 2,656
San Francisco 97 0 97
Santa Barbara 20 680 700
Santa Cruz 21 429 450
Lawrence Berkeley 0 465 465
Lawrence Livermore 0 735 735
Los Alamos 0 0 0
Other - UC 0 521 521
Other-Network UC n/a 3,366 3,366
_______ ______ _____
3,845 15,950 19,795
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 3.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.0
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 9:06
Average session length (minutes:seconds) 12:31
Longest session recorded (minutes:seconds) 179:03
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 252.9
Retrievals per search - standard deviation 2291.2
Percent of searches completed with 0 results 30.0%
Percent of searches entered that are long 4.7%
Percent of long searches completed
(includes partial results) 76.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,481 30.9%
DISPLAY (excluding automatic displays) 2,826 35.1%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 47 0.6%
EXPLAIN 93 1.2%
SET/RESET 852 10.6%
SHOW 34 0.4%
ADD ON (AND, OR, AND NOT) 250 3.1%
LOGON or LOGOFF 1,002 12.5%
COMMENT 0 0.0%
SAVE 149 1.9%
USE 2 0.0%
OTHER 304 3.8%
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 1,260 46.3% 341 27.1% 17 67.8 280.2
TITLE WORD 576 21.1% 308 53.5% 5 79.2 523.8
EXACT TITLE 14 0.5% 7 50.0% 1 3.0 4.1
JOURNAL 57 2.1% 22 38.6% 119 3492.7 11788.9
EXACT JOURNAL 45 1.7% 25 55.6% 141 2008.9 5027.5
SUBJECT 102 3.7% 34 33.3% 13 604.2 2336.3
EXACT SUBJECT 3 0.1% 0 0.0% 14 13.7 5.5
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 8 0.3% 2 25.0% 293 1625.2 2761.8
KEYWORD 397 14.6% 74 18.6% 19 1003.0 4787.4
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 17 0.6% 2 11.8% 21 21.6 22.2
DATE 55 2.0% 11 20.0% 6 46.7 117.4
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. 20 0.7% 4 20.0% 20 149.4 464.6
CONFERENCE 12 0.4% 2 16.7% 125 1088.7 1565.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 6 0.2% 2 33.3% 936 910.0 831.1
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 3 0.1% 2 66.7% 237 237.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 120 4.4% 21 17.5% 7 61.8 181.3
EXACT PE 28 1.0% 3 10.7% 7 177.3 599.3
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% 30 30.0 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 271 11.1% 118 43.5% 5 30.3 88.0
Single 2,179 88.9% 623 28.6% 18 412.4 2979.4
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 6.2%
SHORT 76.7%
LONG 5.0%
TAGS 0.4%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.5%
COMMENTS 0.0%
Other 0.9%
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 44.8%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 6.0%
4. DISPLAY command contains invalid word 2.6%
5. PS command - no previous screen 2.3%
6. Invalid SET DB INS command issued 1.9%
7. Max. # of ports to a Z39 db are in use 1.8%
8. DISPLAY command - no FIND results 1.5%
9. Search term missing from search command 1.5%
10. DISPLAY command-record numbers too large 1.2%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 11.8%
2. INSPEC DATABASES 9.7%
3. GUIDE (INSPEC DBS) 8.6%
4. INDEXES (INSPEC DBS) 8.6%
5. MAIL 7.5%
6. LOCATE (INS/PSY DBS) 5.4%
7. INSPEC BACKFILES 5.4%
8. DATABASES 5.4%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.2%
10. I064 3.2%
11. All others 31.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. DISPLAY command - middle of >1 screen 11.4%
3. FIND command retrieves >1 book 7.1%
4. First word of command is invalid 6.4%
5. DISPLAY command-complete in one screen 6.4%
6. FIND command with invalid index name 5.7%
7. 850 5.7%
8. NS command - no next screen 5.0%
9. 393 5.0%
10. FIND command with zero results 4.3%
11. All others 22.1%
Ten most frequent SHOW requests:
1. HISTORY 91.2%
2. GLOSSARY 2.9%
3. SYSTEM NEWS 2.9%
4. DATABASES 2.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)