MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/01/01 through 05/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 408 1,063 1,471
Davis 1,008 10 1,018
Irvine 155 0 155
Los Angeles 9 290 299
Riverside 60 123 183
San Diego 77 319 396
San Francisco 205 0 205
Santa Barbara 27 123 150
Santa Cruz 45 240 285
Lawrence Berkeley 0 12 12
Lawrence Livermore 0 39 39
Los Alamos 0 0 0
Other - UC 1 59 60
Other-Network UC n/a 1,709 1,709
_______ ______ _____
1,995 3,987 5,982
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 5,227 16,303 201,947
BIO88 755 1,600 64,211
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 71 237 2,054
2-4 a.m. 47 113 1,252
4-6 a.m. 43 113 750
6-8 a.m. 186 521 4,115
8-10 a.m. 681 1,929 17,548
10-12 a.m. 1,114 3,143 73,025
12-2 p.m. 1,084 3,261 78,155
2-4 p.m. 1,139 3,464 29,411
4-6 p.m. 867 2,431 38,774
6-8 p.m. 377 1,391 10,465
8-10 p.m. 213 757 6,330
10-12 p.m. 160 543 4,279
__________ __________ __________ _________________
Total: 5,982 17,903 266,158
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 1,536 3,473 5,009
Davis 3,386 23 3,409
Irvine 459 0 459
Los Angeles 12 849 861
Riverside 178 405 583
San Diego 339 890 1,229
San Francisco 778 0 778
Santa Barbara 55 447 502
Santa Cruz 170 721 891
Lawrence Berkeley 0 27 27
Lawrence Livermore 0 122 122
Los Alamos 0 0 0
Other - UC 4 169 173
Other-Network UC n/a 3,860 3,860
_______ ______ _____
6,917 10,986 17,903
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,628 37,298 50,926
Davis 135,231 132 135,363
Irvine 5,858 0 5,858
Los Angeles 46 7,589 7,635
Riverside 1,267 3,843 5,110
San Diego 995 8,465 9,460
San Francisco 5,819 0 5,819
Santa Barbara 302 3,725 4,027
Santa Cruz 892 5,767 6,659
Lawrence Berkeley 0 524 524
Lawrence Livermore 0 2,766 2,766
Los Alamos 0 0 0
Other - UC 6 1,575 1,581
Other-Network UC n/a 30,430 30,430
_______ ______ _____
164,044 102,114 266,158
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 5.3
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) 9:06
Average session length (minutes:seconds) 13:47
Longest session recorded (minutes:seconds) 452:11
Average number of searches completed per session 3.0
Retrievals per search - median 9.0
Retrievals per search - average 1372.8
Retrievals per search - standard deviation 13917
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 1.8%
Percent of long searches completed
(includes partial results) 62.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 15,610 31.0%
DISPLAY (excluding automatic displays) 19,221 38.2%
BROWSE 3 0.0%
HELP 486 1.0%
EXPLAIN 457 0.9%
SET/RESET 3,046 6.1%
SHOW 150 0.3%
ADD ON (AND, OR, AND NOT) 2,293 4.6%
LOGON or LOGOFF 6,337 12.6%
COMMENT 0 0.0%
SAVE 1,136 2.3%
USE 12 0.0%
OTHER 1,546 3.1%
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 5,961 34.4% 1,261 21.2% 22 158.5 824.4
TITLE WORD 2,774 16.0% 1,032 37.2% 9 1207.3 9355.8
EXACT TITLE 95 0.5% 49 51.6% 1 23.5 64.3
KEYWORD 5,973 34.4% 1,054 17.6% 30 2567.1 21347.9
JOURNAL 850 4.9% 387 45.5% 200 7826.4 29341.3
EXACT JOURNAL 250 1.4% 89 35.6% 1,723 6100.1 8931.4
SOURCE 18 0.1% 14 77.8% 1 2507.0 5012.0
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 3 0.0% 2 66.7% 21 21.0 0.0
SUPERTAXA 4 0.0% 0 0.0% 8 16.5 21.8
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 4 0.0% 2 50.0% 12 11.5 13.4
PUBLICATION TYPE 6 0.0% 2 33.3% 3 6.5 8.4
DATE 51 0.3% 8 15.7% 24 694.3 1217.1
LANGUAGE 2 0.0% 0 0.0% 31 31.0 2.8
ADDED 4 0.0% 0 0.0% 20 19.5 14.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 101 0.6% 14 13.9% 113 31686.2 71810.7
ACCESSION NO. 36 0.2% 1 2.8% 1 1.0 0.0
ISSN 9 0.1% 5 55.6% 3,312 7247.8 9990.5
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 579 3.3% 120 20.7% 5 151.6 1296.1
EXACT PE 137 0.8% 9 6.6% 4 32.7 211.4
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 482 2.8% 118 24.5% 12 469.8 1797.4
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 1,725 11.2% 536 31.1% 5 327.7 4225.0
Single 13,738 88.8% 3,027 22.0% 30 2088.6 17609.1
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 3 100% 1 33.3% 6 5.5 6.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 85.2%
LONG 1.3%
TAGS 0.3%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.7%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 33.4%
2. First word of command is invalid 27.2%
3. FIND command with invalid index name 9.6%
4. DISPLAY command contains invalid word 4.2%
5. PS command - no previous screen 4.0%
6. DATE search with unrecognized word 2.2%
7. Valid command at an inappropriate time 1.8%
8. Search term missing from search command 1.8%
9. Index invalid in current database 1.5%
10. Max. # of ports to a Z39 db are in use 1.2%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 19.9%
2. GUIDE 12.7%
3. INDEXES 10.1%
4. COMMANDS 9.8%
5. FIND 9.6%
6. BIOSIS DATABASE 6.8%
7. Unrecognized term 4.2%
8. DISPLAY 3.1%
9. MAIL 2.2%
10. ADDON SEARCH 1.8%
11. All others 19.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.5%
2. First word of command is invalid 11.2%
3. FIND command with invalid index name 9.5%
4. DISPLAY command-first of >1 screen 8.2%
5. FIND command with zero results 4.8%
6. DISPLAY command - middle of >1 screen 4.7%
7. DISPLAY command-complete in one screen 4.3%
8. FIND command retrieves >1 book 3.9%
9. DISPLAY command - last of >1 screen 3.4%
10. NS command - no next screen 3.0%
11. All others 23.4%
Ten most frequent SHOW requests:
1. HISTORY 62.9%
2. SEARCH 11.2%
3. MAIL STATUS 7.0%
4. BIOSIS NEWS 6.3%
5. SETTINGS 2.8%
6. MAIL SETTINGS 2.1%
7. TAXONOMIC GUIDE 1.4%
8. PUBLICATION TYPES 0.7%
9. BIOSIS STATISTICS 0.7%
10. TAXONOMIC GUIDE: ANIMALS 0.7%
11. All others 4.2%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)