MELVYL ABI DATABASE TELNET STATISTICS
Time period: 01/20/01 through 01/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 69 74
Davis 22 0 22
Irvine 29 0 29
Los Angeles 3 28 31
Riverside 0 1 1
San Diego 1 4 5
San Francisco 9 0 9
Santa Barbara 1 1 2
Santa Cruz 6 2 8
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 9 9
Other-Network UC n/a 67 67
_______ ______ _____
76 181 257
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 15 166
2-4 a.m. 4 10 42
4-6 a.m. 2 3 223
6-8 a.m. 6 48 928
8-10 a.m. 23 52 1,002
10-12 a.m. 41 95 633
12-2 p.m. 28 61 1,084
2-4 p.m. 69 192 1,677
4-6 p.m. 45 142 1,502
6-8 p.m. 10 34 145
8-10 p.m. 16 39 714
10-12 p.m. 9 37 673
__________ __________ __________ _________________
Total: 257 728 8,789
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 13 135 148
Davis 51 0 51
Irvine 91 0 91
Los Angeles 3 110 113
Riverside 0 1 1
San Diego 3 6 9
San Francisco 53 0 53
Santa Barbara 0 1 1
Santa Cruz 27 6 33
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 24 24
Other-Network UC n/a 204 204
_______ ______ _____
241 487 728
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 97 2,007 2,104
Davis 436 0 436
Irvine 1,244 0 1,244
Los Angeles 46 1,329 1,375
Riverside 0 40 40
San Diego 18 59 77
San Francisco 798 0 798
Santa Barbara 0 0 0
Santa Cruz 201 186 387
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 115 115
Other-Network UC n/a 2,213 2,213
_______ ______ _____
2,840 5,949 8,789
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.2
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 ABI Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:56
Average session length (minutes:seconds) 16:52
Longest session recorded (minutes:seconds) 621:13
Average number of searches completed per session 2.8
Retrievals per search - median 8.5
Retrievals per search - average 1620.1
Retrievals per search - standard deviation 10972
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 86.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 636 27.1%
DISPLAY (excluding automatic displays) 968 41.2%
BROWSE 4 0.2%
SELECT 0 0.0%
HELP 23 1.0%
EXPLAIN 25 1.1%
SET/RESET 125 5.3%
SHOW 15 0.6%
ADD ON (AND, OR, AND NOT) 92 3.9%
LOGON or LOGOFF 289 12.3%
COMMENT 0 0.0%
SAVE 90 3.8%
USE 0 0.0%
OTHER 86 3.7%
2.1 Article Text
_________________
DISPLAY TEXT commands 103
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 13
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 264 37.9% 68 25.8% 16 111.5 396.8
TITLE WORD 130 18.7% 65 50.0% 8 45.9 93.6
EXACT TITLE 10 1.4% 5 50.0% 3 75.0 157.7
JOURNAL 29 4.2% 13 44.8% 446 4720.4 10749.5
EXACT JOURNAL 25 3.6% 4 16.0% 1,106 4573.1 10367.6
SUBJECT 49 7.0% 18 36.7% 807 12991.4 27767.4
EXACT SUBJECT 8 1.1% 2 25.0% 3,526 9354.5 12942.9
KEYWORD 136 19.5% 17 12.5% 108 4096.4 20990.4
PUB TYPE 6 0.9% 3 50.0% 78 59.7 51.0
DATE 11 1.6% 6 54.5% 60 49.8 42.5
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
COMPANY NAME 6 0.9% 0 0.0% 164 247.7 268.5
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 1 0.1% 0 0.0% 307 307.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.1% 0 0.0% 987 987.0 0.0
PERIODICAL 16 2.3% 4 25.0% 6 145.8 473.5
EXACT PE 1 0.1% 0 0.0% 49 49.0 0.0
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 3 0.4% 0 0.0% 99 104.3 102.1
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 57 9.0% 21 36.8% 11 74.7 153.4
Single 575 91.0% 158 27.5% 31 2740.6 14319.2
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:
SUBJECT 4 100% 1 25.0% 18 15.7 11.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.9%
SHORT 80.7%
LONG 0.4%
TAGS 0.0%
FIELDS 2.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 2.8%
COMMENTS 0.0%
Other 7.1%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 7.0%
Ten most frequent errors:
1. First word of command is invalid 32.2%
2. NS command - no next screen 27.7%
3. FIND command with invalid index name 7.3%
4. DISPLAY command-record numbers too large 4.0%
5. Search term missing from search command 3.4%
6. DISPLAY command contains invalid word 2.8%
7. Max. # of ports to a Z39 db are in use 2.8%
8. PS command - no previous screen 2.3%
9. BROWSE command with invalid index name 2.3%
10. Index invalid in current database 2.3%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 36.0%
2. FIND (ABI DB) 16.0%
3. INDEXES (ABI DB) 12.0%
4. A060 4.0%
5. ABI/INFORM DB 4.0%
6. BROWSE (ABI DB) 4.0%
7. SUBJECT CATEGORIES (ABI DB) 4.0%
8. B048 4.0%
9. ABI TEXT 4.0%
10. MAIL 4.0%
11. All others 8.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 31.2%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 12.5%
4. FIND command with zero results 8.3%
5. DISPLAY command - middle of >1 screen 6.3%
6. BROWSE command with zero results 4.2%
7. F/BR with index invalid in current DB 4.2%
8. DISPLAY command - no FIND results 2.1%
9. NS command - no next screen 2.1%
10. BROWSE command with invalid index name 2.1%
11. All others 12.5%
Ten most frequent SHOW requests:
1. HISTORY 81.8%
2. ABI NEWS 9.1%
3. SEARCH 9.1%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)