MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/24/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 75 269 344
Davis 171 7 178
Irvine 52 0 52
Los Angeles 0 35 35
Riverside 12 44 56
San Diego 16 44 60
San Francisco 34 0 34
Santa Barbara 2 21 23
Santa Cruz 0 24 24
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 393 393
_______ ______ _____
362 883 1,245
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,099 3,106 27,269
BIO88 146 376 2,321
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 51 252
2-4 a.m. 1 2 27
4-6 a.m. 11 26 352
6-8 a.m. 38 109 1,233
8-10 a.m. 151 361 1,823
10-12 a.m. 280 762 5,105
12-2 p.m. 191 513 4,214
2-4 p.m. 247 724 7,611
4-6 p.m. 168 522 5,504
6-8 p.m. 66 185 1,606
8-10 p.m. 54 152 708
10-12 p.m. 25 75 1,155
__________ __________ __________ _________________
Total: 1,245 3,482 29,590
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 277 753 1,030
Davis 702 11 713
Irvine 173 0 173
Los Angeles 0 79 79
Riverside 37 145 182
San Diego 78 102 180
San Francisco 140 0 140
Santa Barbara 3 38 41
Santa Cruz 0 46 46
Lawrence Berkeley 0 40 40
Lawrence Livermore 0 12 12
Los Alamos 0 0 0
Other - UC 0 90 90
Other-Network UC n/a 756 756
_______ ______ _____
1,410 2,072 3,482
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,518 8,063 11,581
Davis 7,493 23 7,516
Irvine 1,382 0 1,382
Los Angeles 0 946 946
Riverside 113 911 1,024
San Diego 363 822 1,185
San Francisco 1,023 0 1,023
Santa Barbara 9 273 282
Santa Cruz 0 563 563
Lawrence Berkeley 0 330 330
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 990 990
Other-Network UC n/a 2,753 2,753
_______ ______ _____
13,901 15,689 29,590
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 7.4
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 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 11:15
Average session length (minutes:seconds) 14:38
Longest session recorded (minutes:seconds) 478:02
Average number of searches completed per session 2.8
Retrievals per search - median 8.5
Retrievals per search - average 588.6
Retrievals per search - standard deviation 7299.9
Percent of searches completed with 0 results 25.1%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 72.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,000 30.1%
DISPLAY (excluding automatic displays) 3,780 37.9%
BROWSE 5 0.1%
HELP 96 1.0%
EXPLAIN 76 0.8%
SET/RESET 655 6.6%
SHOW 28 0.3%
ADD ON (AND, OR, AND NOT) 482 4.8%
LOGON or LOGOFF 1,292 13.0%
COMMENT 0 0.0%
SAVE 255 2.6%
USE 2 0.0%
OTHER 303 3.0%
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 1,102 32.9% 213 19.3% 22 119.3 391.1
TITLE WORD 541 16.2% 231 42.7% 9 615.2 3942.3
EXACT TITLE 33 1.0% 18 54.5% 1 8.4 21.9
KEYWORD 1,133 33.9% 224 19.8% 28 1563.4 13826.5
JOURNAL 137 4.1% 60 43.8% 182 2155.5 6179.9
EXACT JOURNAL 68 2.0% 33 48.5% 451 2091.7 3421.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 4 0.1% 0 0.0% 4 5.5 5.7
SUPERTAXA 1 0.0% 0 0.0% 6 6.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 0 0.0% 13 10.7 8.7
PUBLICATION TYPE 2 0.1% 0 0.0% 4 3.5 2.1
DATE 24 0.7% 4 16.7% 10 54.2 146.5
LANGUAGE 2 0.1% 0 0.0% 234 233.5 328.8
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. 4 0.1% 0 0.0% 29 46.3 54.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 1 50.0% 1,747 1747.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 120 3.6% 20 16.7% 5 306.7 1850.7
EXACT PE 30 0.9% 4 13.3% 3 7.2 11.6
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 140 4.2% 29 20.7% 11 122.6 506.3
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 353 11.9% 91 25.8% 8 39.5 152.1
Single 2,619 88.1% 647 24.7% 29 1006.3 9637.2
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:
CONCEPT CODES 5 100% 2 40.0% 6 21.3 31.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 87.6%
LONG 1.4%
TAGS 0.1%
FIELDS 2.7%
BROWSE REVIEW 0.1%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.7%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 34.3%
2. First word of command is invalid 29.7%
3. FIND command with invalid index name 11.2%
4. PS command - no previous screen 3.8%
5. Valid command at an inappropriate time 3.4%
6. DISPLAY command contains invalid word 2.4%
7. Max. # of ports to a Z39 db are in use 2.4%
8. Search term missing from search command 1.9%
9. Index invalid in current database 1.5%
10. DISPLAY command-record numbers too large 1.4%
11. All others 8.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.4%
2. LOCATE (BIO DB) 17.1%
3. INDEXES 11.8%
4. FIND 9.2%
5. Unrecognized term 9.2%
6. COMMANDS 7.9%
7. MAIL 7.9%
8. SAVE 3.9%
9. BIOSIS DATABASE 2.6%
10. 1617 2.6%
11. All others 9.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.7%
2. First word of command is invalid 16.9%
3. FIND command with invalid index name 8.1%
4. DISPLAY command-complete in one screen 7.0%
5. FIND command with zero results 5.2%
6. FIND command retrieves >1 book 4.7%
7. DISPLAY command - last of >1 screen 4.1%
8. NS command - no next screen 3.5%
9. DISPLAY command-first of >1 screen 3.5%
10. F/BR command with invalid search term 2.3%
11. All others 15.1%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 12.5%
3. BIOSIS NEWS 8.3%
4. SUPERTAXA HIERARCHICAL TABLE 4.2%
5. GLOSSARY 4.2%
6. TIMEOUT SETTING 4.2%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)