MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/23/01 through 06/29/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 54 243 297
Davis 157 6 163
Irvine 41 0 41
Los Angeles 1 36 37
Riverside 4 56 60
San Diego 6 24 30
San Francisco 33 0 33
Santa Barbara 0 27 27
Santa Cruz 7 23 30
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 16 16
Other-Network UC n/a 354 354
_______ ______ _____
303 793 1,096
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 960 2,718 23,649
BIO88 136 473 1,611
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 24 423
2-4 a.m. 8 25 185
4-6 a.m. 14 49 219
6-8 a.m. 39 100 610
8-10 a.m. 96 226 1,729
10-12 a.m. 265 661 4,624
12-2 p.m. 196 545 5,573
2-4 p.m. 170 853 4,731
4-6 p.m. 157 359 3,742
6-8 p.m. 57 148 1,090
8-10 p.m. 52 119 1,132
10-12 p.m. 27 82 1,202
__________ __________ __________ _________________
Total: 1,096 3,191 25,260
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 239 686 925
Davis 796 8 804
Irvine 96 0 96
Los Angeles 5 101 106
Riverside 11 134 145
San Diego 50 65 115
San Francisco 150 0 150
Santa Barbara 0 64 64
Santa Cruz 10 50 60
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 37 37
Other-Network UC n/a 679 679
_______ ______ _____
1,357 1,834 3,191
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,488 8,068 10,556
Davis 5,379 5 5,384
Irvine 755 0 755
Los Angeles 135 836 971
Riverside 55 919 974
San Diego 83 304 387
San Francisco 967 0 967
Santa Barbara 0 700 700
Santa Cruz 62 577 639
Lawrence Berkeley 0 25 25
Lawrence Livermore 0 133 133
Los Alamos 0 0 0
Other - UC 0 189 189
Other-Network UC n/a 3,580 3,580
_______ ______ _____
9,924 15,336 25,260
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 5.4
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
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Median session length (minutes:seconds) 9:59
Average session length (minutes:seconds) 14:15
Longest session recorded (minutes:seconds) 613:03
Average number of searches completed per session 2.9
Retrievals per search - median 13.0
Retrievals per search - average 3737.5
Retrievals per search - standard deviation 19350
Percent of searches completed with 0 results 20.7%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 65.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,526 27.2%
DISPLAY (excluding automatic displays) 3,686 39.7%
BROWSE 1 0.0%
HELP 53 0.6%
EXPLAIN 45 0.5%
SET/RESET 569 6.1%
SHOW 20 0.2%
ADD ON (AND, OR, AND NOT) 665 7.2%
LOGON or LOGOFF 1,121 12.1%
COMMENT 0 0.0%
SAVE 288 3.1%
USE 4 0.0%
OTHER 316 3.4%
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 1,056 37.9% 199 18.8% 23 205.0 1428.7
TITLE WORD 481 17.3% 204 42.4% 7 589.2 4054.6
EXACT TITLE 15 0.5% 9 60.0% 1 1.7 1.6
KEYWORD 929 33.3% 153 16.5% 27 2123.9 18473.8
JOURNAL 98 3.5% 43 43.9% 184 32253.4 70043.0
EXACT JOURNAL 45 1.6% 19 42.2% 372 1963.5 3210.2
SOURCE 1 0.0% 0 0.0% 16 16.0 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 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 3 3.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 9 0.3% 2 22.2% 1 2.9 2.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 1 0.0% 0 0.0% 31 31.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 9 0.3% 2 22.2% 52 100.9 131.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 73 2.6% 10 13.7% 4 51.9 143.5
EXACT PE 15 0.5% 0 0.0% 4 72.8 183.6
RPE 1 0.0% 0 0.0% 2 2.0 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 54 1.9% 16 29.6% 11 95.0 417.6
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 274 11.0% 83 30.3% 5 184.4 2333.6
Single 2,226 89.0% 486 21.8% 29 2155.4 18368.7
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 1 100% 0 0.0% 52 52.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 89.0%
LONG 1.2%
TAGS 0.1%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 38.4%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 8.0%
4. DISPLAY command contains invalid word 4.0%
5. PS command - no previous screen 2.4%
6. Max. # of ports to a Z39 db are in use 2.3%
7. Search term missing from search command 1.7%
8. Index invalid in current database 1.7%
9. Valid command at an inappropriate time 1.2%
10. DISPLAY command - no FIND results 1.0%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.2%
2. INDEXES 15.6%
3. COMMANDS 11.1%
4. FIND 8.9%
5. LOCATE (BIO DB) 8.9%
6. BIOSIS DATABASE 4.4%
7. DISPLAY 4.4%
8. DISPLAY PE 4.4%
9. 1752 4.4%
10. B321 2.2%
11. All others 13.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.6%
2. First word of command is invalid 16.3%
3. FIND command with invalid index name 7.1%
4. DISPLAY command-first of >1 screen 7.1%
5. DISPLAY command-complete in one screen 6.1%
6. FIND command with zero results 4.1%
7. SET DB command entered w/o modifier 3.1%
8. PS command - no previous screen 3.1%
9. DISPLAY command - middle of >1 screen 3.1%
10. DISPLAY command - last of >1 screen 3.1%
11. All others 19.4%
Ten most frequent SHOW requests:
1. HISTORY 89.5%
2. BIOSIS NEWS 5.3%
3. B902 5.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)