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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
4 C( h# o3 a& ]to do-business 8 E; K' B- h( {
rt random 360
4 O7 H; c7 |4 t6 j  | fd 1
) Z, E) o' r- @: W% j$ C; _  g ifelse(other turtles-here != nobody)[. _. y' g  O9 U0 w- m. [
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.6 y! x% a- `% F6 I% u' z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, j4 I, t8 ^5 m( Q* ?0 B" E" O* _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: _$ V  [& P/ O5 v! t7 m& Y$ q. b
   set [trade-record-one-len] of self length [trade-record-one] of self
/ e: M- ^# f, O; E5 r) }   set trade-record-current( list (timer) (random money-upper-limit))
- ?% J- @) x6 V/ E; F9 y# c/ p7 D6 a
问题的提示如下:* w7 N! S$ [; x9 X& a- f

  @6 V, g' g/ {+ \7 N3 a8 @4 Derror while turtle 50 running OF in procedure DO-BUSINESS7 d0 @( R8 E( L  W' _
  called by procedure GO
' }* ]1 b3 o8 Z4 G* f$ ~- |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' p& z2 G  U) P& B
(halted running of go)* q5 Z& B% F2 u  ~

# V- d4 F$ u3 N4 g+ X! I这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~  E" |4 B, U; Q  b: R; j+ H4 c5 Z
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
! M6 [" x/ X+ O: g9 X0 Lglobals[. F% E2 l% t$ `# c- L( I
xmax- Q% A. n/ Z$ M& O* y- U- f# F
ymax
* I+ r+ ]/ q, o8 Q4 A) O5 Yglobal-reputation-list
. M7 x1 u/ E% u0 y3 o1 u1 e3 Q, W$ V: o
;;
每一个turtle的全局声誉都存在此LIST
- ^1 {; V( [+ z6 L9 a- F6 scredibility-list
  D! l: W8 A! U: L" ?;;
每一个turtle的评价可信度$ p# b7 l& |' R/ R
honest-service
* R5 W  a1 G' m' D6 J- ]( J3 }unhonest-service
6 n, b, h8 i; b4 [: B' \oscillation0 O0 W( |7 Q/ H$ b
rand-dynamic
8 L) f! ]7 p% g; [; k]: P& G1 O$ `' V0 s8 {6 I7 w
% f, H/ O7 i/ \1 X2 n
turtles-own[; w- \! k0 o$ V' p  W& |
trade-record-all
0 i: P- w. R' m  f: j6 l;;a list of lists,
trade-record-one组成
8 ]0 W$ g5 v' D& Q! D, P2 D% Strade-record-one: q# ]+ W' w& {6 b1 e7 L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 A! h: C& y; ^, p/ z/ I: v  m6 a( ?2 F- o
# T: l3 o0 r: n+ l! n$ s! Y7 M
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]2 W+ h: L, @. b  X6 L8 d" o2 C
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
1 F8 b1 w( j" ~, Q) p& O  [* z) q" ~credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
8 {6 L. j7 u6 N7 ~' O. c4 oneighbor-total
# n: m: i6 G1 m7 i" N7 Z! C5 ?;;
记录该turtle的邻居节点的数目3 \6 E+ {/ S2 g7 d3 a- e0 Q, @) Y
trade-time
2 g4 a3 E8 X. S  N4 Q3 };;
当前发生交易的turtle的交易时间
' V5 r% }0 ^: R( Q6 eappraise-give: l( Y( s% A1 n' a- ^' f
;;
当前发生交易时给出的评价1 t5 i2 u+ _! {3 t6 n2 v6 F
appraise-receive& G3 |& z$ O4 R7 d5 o# p
;;
当前发生交易时收到的评价6 w0 U0 c" [9 _0 J5 _: Q
appraise-time8 `9 A& a5 A  u6 a2 Y4 z
;;
当前发生交易时的评价时间3 h4 M7 K8 @$ T4 K) _' ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. H1 {3 Y* E( T( F& K$ |  \5 f
trade-times-total
$ [! T7 t; [2 K0 I6 |8 E$ Y;;
与当前turtle的交易总次数
% Z& U6 ^' K  q- y9 V2 btrade-money-total
% P* Q2 L8 V" k+ u  s;;
与当前turtle的交易总金额
8 b& b3 U& X! B9 [) Jlocal-reputation
. i$ G9 I# ?3 H% k" b; h0 tglobal-reputation- K5 ^+ m  y- X& a3 r/ b' z; ]
credibility% ^( p% R! ?5 F, i
;;
评价可信度,每次交易后都需要更新
2 e. U6 z0 @. j$ e. O- }credibility-all3 m- P+ H0 a$ F  H/ g: E% Y
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据# \. K/ R! \9 N) E
! Z* p+ ^) ~+ p' K) D
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.51 w& w8 d- k, @% @; K
credibility-one
2 `1 S( C6 b0 N;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
3 }- d9 r2 \: u1 r4 o4 qglobal-proportion
2 x. [: _9 c( icustomer% j! t( r" S* M3 F% M
customer-no: U  |' B' Z; `: h) Q- ?
trust-ok6 c5 _7 B8 ~0 W
trade-record-one-len;;trade-record-one的长度
" M! d+ I& a( ^' s]
; }; W. s& Q; M% W% r2 q* s" W. D' {+ a" \: j$ F8 N9 `9 v
;;setup procedure
; ^  H$ i$ C# r* N4 b8 H& Z6 p/ h$ p2 L4 F) b
to setup
1 o% }) G6 `' R4 S
" Z  S3 b* s# h; O& j9 ]ca
; Q9 W" V6 N( y$ M* W- [. c' r& u
- K; P' ~6 t4 W9 Y4 ?* p6 o
initialize-settings
9 ]+ Y+ B  w- m! g8 k0 b; V/ [% A
6 P/ z. s/ D1 S5 X
crt people [setup-turtles]

4 a2 N" {& ?; J5 O: ^: w
2 _# r% O) _; \) ?. Z) treset-timer
/ M7 ], w: C$ E+ G
6 {, u* y  I+ x- Q+ O" n# B; F
poll-class
2 H1 u# S" C% C9 {

! v( G2 F1 d! a; d( o; Tsetup-plots
. q' n: A, z' F& X+ Z
9 @# l3 Y. \$ B
do-plots
; j% c9 u& w3 K- k* W+ v
end
, |3 }) y. H1 f6 {
/ p0 f- j" H  ^  P- @to initialize-settings  }$ F! R8 G. C, s& S( [

: r: Q- p4 t  `. [- _* nset global-reputation-list []

9 x! D  M: t6 i9 c" U! D* W5 w  _7 x4 G  U+ H  K
set credibility-list n-values people [0.5]

* ]; y, Z" {+ c4 G  r+ ~* r" h& F8 o7 c) C& g
set honest-service 0

+ `* S% T9 g8 |, U6 ^& ?0 N* D
& }* q' X% \4 D# lset unhonest-service 0
6 H3 S  Q* F* ^! g% a

: }/ t$ u$ P* n/ i2 P5 b  `- Oset oscillation 0
* {" _" [4 Z9 C* m  C8 f! K
" I! ^* n2 H* _- u
set rand-dynamic 0

; H3 j8 g2 W6 ]7 F& U: @9 Bend
% s- G  L7 p8 N* M- {3 Z6 A7 w# U) p& i+ ^  g+ @# k
to setup-turtles
, |' C9 y# b0 T6 e) qset shape "person"
1 q# i$ _* Y; Q% ]" vsetxy random-xcor random-ycor
) M9 m2 s$ ^( d, Kset trade-record-one []7 ]. z0 _1 q/ v# y

4 v- l! \8 U8 \# C4 s$ t5 Bset trade-record-all n-values people [(list (? + 1) 0 0)]   T+ P7 R0 }6 V6 [5 l6 Q
6 i! N+ G& L7 G3 q  S
set trade-record-current []
" k* H1 k/ Q2 w) `) tset credibility-receive []2 f. k; p# f, V9 {, Y" ^
set local-reputation 0.55 a8 Z  n1 C2 I& G6 o9 _' a
set neighbor-total 0
4 b9 K# M) Z7 X  Q  bset trade-times-total 0% z3 O! n  G, ^* p% o
set trade-money-total 0
4 b& s' A8 O; ~/ c" O( d- Oset customer nobody
( ?. f5 a/ w- zset credibility-all n-values people [creat-credibility]
9 q( y: W  @0 L2 |2 Lset credibility n-values people [-1]
% U: a7 r6 ?0 o& Y% p( x* fget-color2 W' b! J: m$ X3 |

4 A0 \* n, ?7 Kend, W$ y& V: b- Y
3 I; r0 ?7 |1 \$ i
to-report creat-credibility9 T8 M" o6 t0 {$ U
report n-values people [0.5]
3 \) @4 @5 Z9 A) K7 @3 `end% A- c4 S  H' x  @  `
3 `- w1 G, Z. V! m  d0 b8 m
to setup-plots
$ o$ c7 G# M5 b4 ?
  m" d. |% y  _( ]$ U+ S* F/ Qset xmax 30
0 p: X; d0 s) m( ?: l

$ j, n! g  c* W$ R4 Eset ymax 1.0

9 w) F3 t( Q; `  P; B2 Z# T1 h0 ]  u
clear-all-plots
! Z; Y) k+ g/ _' A3 o8 H
$ H  F, i; R% t4 v0 v( o# q
setup-plot1
* K  q( e* E8 z! j; |' O
  l) o/ u9 u1 b5 z
setup-plot2

. M& N2 D8 w1 I9 f
, a) c/ m. T  u+ [  ssetup-plot3

' G  T' j3 O* l, W9 l( A5 t. x8 A2 mend# V+ n! r1 F% U2 O) b
/ x3 h' w2 K: S
;;run time procedures2 k4 A! D( H' c3 y0 E( C% h
( z' \- f3 ~4 z
to go
& D' u& C/ m% c5 d  i; ^2 ^
' ^  V; |) i! c2 \* ]! ]( k8 D$ Gask turtles [do-business]

& k) K* {. l- x8 P& h/ K% e* zend
. K! I: m/ T+ }; g  M1 c( c0 R4 v$ F' a9 V; X
to do-business
8 Z7 T2 d) T  P2 R. J, ~

: }& n9 ]: D  i$ D+ s
: o" l2 a/ t1 ~0 k, irt random 360

& x- Y/ E" H/ q; r* w5 L
# c4 ^6 w3 ^+ Z6 T  _fd 1
, ?: m1 S4 X$ @0 X* u# q& G0 L3 R

$ n2 s2 p8 s0 r  P  x* Iifelse(other turtles-here != nobody)[

, ?# G0 ~. z% {
! T2 L3 }* j7 F% k& rset customer one-of other turtles-here
( q/ f8 B. t& k8 N6 Y

$ P6 {: H. p$ A$ b& U;; set [customer] of customer myself

5 O* S! V) e! {* x/ C" ?+ B- i
7 p' L8 y2 {/ r1 ?6 e6 b: q: yset [trade-record-one] of self item (([who] of customer) - 1); G/ d+ w& k4 ]; x# \% S% b
[trade-record-all]of self
3 z- B+ }3 n0 ~  G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 b0 W" l% j6 V; ~, ^% Z! h# \1 o7 @* `) N1 O- {" U. |, o
set [trade-record-one] of customer item (([who] of self) - 1)
+ {  e) V5 y% q/ K2 |7 T& r[trade-record-all]of customer

) o: a5 `% I, _  j  E  A
" C) g0 k+ l  u" k$ K& kset [trade-record-one-len] of self length [trade-record-one] of self
! x* I* V' T+ {+ B5 N6 A( _
8 e; J! A0 r: y" M8 r
set trade-record-current( list (timer) (random money-upper-limit))
: m5 @, l, R' y9 E; g& V$ C

0 U* }. D/ R) H% S3 m* Pask self [do-trust]. n/ O5 B+ `8 l
;;
先求ij的信任度. W+ f& `4 G& H: T! z) h% h7 J
9 _1 S! Y, G7 V; L, o+ P
if ([trust-ok] of self)8 n  x- [& [8 K" F# D6 T
;;
根据ij的信任度来决定是否与j进行交易[
. x4 Y. h! b/ B9 A0 P; gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: q3 B, K4 o1 e/ r( ?0 l, W" U+ G3 Q8 p* [
[
& _% E5 x7 r! a3 b9 \3 ^" A) v

* Y( F' V0 p9 N4 N: Udo-trade

8 d7 Y! s$ A4 k- Q/ Y# }8 N) T- ]" ^7 R* K" Z, J2 K! c# M
update-credibility-ijl

6 X2 M( s  a# ^0 C$ z9 f# Q4 u9 L1 l3 _6 q+ X/ i% B
update-credibility-list
7 E' f+ E& i- [+ v$ c2 p
; C& M0 M. d5 {
& }/ H# z1 c/ y+ m. G6 p: C
update-global-reputation-list
3 L0 n& u% n9 K" O# Y$ L5 Q! {
$ B/ x6 V7 ?% W5 j
poll-class
  \: V  H! s2 t* y. C- ?; p- h* ]
8 L3 z' G: x7 o  E; u4 V
get-color

) d% g6 ^: S# s# n. \" G. D* Z, K$ Q8 |7 Z8 b* c
]]# i" _' L1 `  i

2 x( c. v, u& q) O3 \7 J$ C, b;;
如果所得的信任度满足条件,则进行交易( A4 N3 o- J' ]* o5 s' d; s/ B0 q
- ?, p' Z. m2 b6 u: C6 ~
[

2 p, c% ~& [8 a& U) g/ P: h2 q5 b; l* X/ Q, c
rt random 360
) s& u3 |5 \) c2 }2 r$ C% Y
# `6 F) ?" |& X/ x1 [7 D* P* }
fd 1

% `0 R# z8 [* ]3 Y, w. x( Y, R$ R* f; O' v
]
& T8 r6 i$ E! {2 c* V1 y
7 F/ y) U( l+ ~0 s
end
; w5 e! C1 h* W- H  m* C+ Z

- s% S! a4 R) C3 h2 z" J& }2 D& qto do-trust
% R5 F* }# f3 _- A9 C3 Gset trust-ok False* x$ F& v% D" `$ o$ R! d
0 f6 q  J! i9 \7 d# Z! [5 [

! G; Y" g7 |0 q7 G; M' R% q3 |let max-trade-times 0: C9 L/ H2 H% v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' o  R% G6 w; k
let max-trade-money 00 Q% s, [: \0 T7 ~7 O) E9 m3 W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 K/ [* }$ b- ]" D' Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& e% y5 b: X/ c+ q' N* M
+ k6 O; K/ |+ I9 w9 o
6 o# S' N5 w4 G# i% b
get-global-proportion
5 m8 {. q. {, ^3 Z. T" k9 zlet trust-value0 Z# R- [% y% T! Z( O  c7 f
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 Y. U3 s/ e; e; b
if(trust-value > trade-trust-value)
( P6 p: |$ ^2 g( v1 A[set trust-ok true]7 r  c0 n+ Q$ h5 T6 U5 y. }7 a
end. g( R  N3 J% H+ y) F, D

- J' V: x/ {* a/ O; Z7 cto get-global-proportion
/ H- u8 J* h( q. A$ L, eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* R, N2 n3 K  e/ v6 R1 r
[set global-proportion 0]
: W: j# G, e$ |6 Q" j# |8 F[let i 06 G: c+ U' W  |5 f0 K8 m: @
let sum-money 0
1 M# k  r4 z; ]while[ i < people]/ X8 ?7 G; {. s5 \$ E7 _* D
[
# C' u; ]& h- g+ h4 Pif( length (item i
1 B( s* i' e1 w! x* M* O/ n4 ~[trade-record-all] of customer) > 3 )

& I$ o( z# S; ]$ g% d7 n, P0 @[
4 P% `4 ]  @! w  P& L2 J/ fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 m* ~) b  y2 H  ~
]3 E( R; A: ?# u
]# q0 @* C2 B0 L; f4 {; k3 {
let j 0
' o) S9 }/ q: t# S/ tlet note 07 K" I! }/ m7 ]2 t. x
while[ j < people]7 H* ^" b$ z, \6 N* \* d
[3 t7 G! p2 o, `" M- y
if( length (item i6 N1 s3 Q/ b* h* O% b/ c
[trade-record-all] of customer) > 3 )
/ T1 p. D5 @! e$ ^: E
[# W6 A  b: ^( G  g6 g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! j7 p7 U; z& s( q$ ?, G7 V% _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. H; b- x) E; v) v3 \1 ~9 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, C' m- A( F$ ^]$ j; @  q8 n! o1 n
]
. G! u2 Y4 N  H& h" F7 Mset global-proportion note
% T, h$ Q; X/ W* {; N]5 P3 y8 r$ g8 K. c6 ~
end4 u4 b( M9 j+ e# G7 ^
- |1 ~8 A+ O3 }( O( E( |- @
to do-trade
: _! G( w  U1 e* {0 T. W% U5 T4 H; U;;
这个过程实际上是给双方作出评价的过程
; u% ?9 @; C5 ?9 X* l3 uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 Q) K) d: y3 q$ j# g. J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 W2 K! m! e# z1 K
set trade-record-current lput(timer) trade-record-current4 Q% y2 ], J' B, b2 X  k
;;
评价时间
- z# Q" f7 T+ h- {9 k4 d1 Gask myself [
( l5 Z+ U& U" N. f+ z7 `update-local-reputation4 Z" z: Q/ T7 F  `& M5 A
set trade-record-current lput([local-reputation] of myself) trade-record-current
! l, M9 g1 R( J1 ~- Z, O]" M4 h9 g1 i) y6 K& B! e0 F
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  k+ t  I; K- }2 v3 A7 }7 v+ h
;;
将此次交易的记录加入到trade-record-one% C) a: l2 z- X2 C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ _. [0 D. S# v, E4 `7 `let note (item 2 trade-record-current )& j; N  \0 w  ^
set trade-record-current% n2 y. p; F6 T
(replace-item 2 trade-record-current (item 3 trade-record-current))

  w  r$ ?4 G7 d* u; f4 C; Lset trade-record-current7 I; N7 b$ h7 T8 ~3 t* S
(replace-item 3 trade-record-current note)
  _' n2 j' `* G/ A+ J4 T
3 \4 _+ v+ o- j% g% ]" E' }6 c8 w

+ C# n  N$ t9 n0 V( Mask customer [3 ]; w/ ]7 H) s2 ~; h) Y7 w
update-local-reputation
) |; a4 c; k! I& C  fset trade-record-current; |1 z4 n' S* A9 j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ H* [) B" o' \* V. T2 \/ f
]
0 N& H* C( k5 V: A4 q& Y
7 v0 ?. C& ?2 G" r5 ]

; d8 u4 R! N4 I- q) C. qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 i+ g/ P0 Y7 J0 A" u
' }" m; h0 s: {6 f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% w8 z2 h. M( \3 O;;
将此次交易的记录加入到customertrade-record-all$ J7 w6 @+ `! R7 c8 z8 h; _6 k
end0 r7 {" A. ~  E$ E$ ?
- c8 P) o% S* y3 ~+ _3 p3 q
to update-local-reputation
+ S! M6 R2 p) e' mset [trade-record-one-len] of myself length [trade-record-one] of myself
/ g7 h# ]+ T9 V' x$ O4 _$ ?
; M, L/ V$ l# J. H2 n9 g# m% Q5 |2 C% X& }) ?5 u6 o
;;if [trade-record-one-len] of myself > 3

3 w: X8 ^# U( ~( U+ Yupdate-neighbor-total
+ B- P9 M, U: z;;
更新邻居节点的数目,在此进行& F" J$ ]9 K+ s8 R
let i 3) Q- D3 x) Y( S
let sum-time 0
2 A8 v2 t2 v; P0 ?& ^; Iwhile[i < [trade-record-one-len] of myself]
6 q3 _8 h+ H4 R[
* ?% q! M, u/ `4 L, i4 d. J! Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 a4 d  n3 y" V" }+ F. P. `
set i! g& F6 r2 F! J% X& _1 H9 q
( i + 1)
/ g/ p' c8 r5 s$ d2 S/ _7 ]% t
]) r3 T, b- p8 p" E0 W) b
let j 3* J+ |7 y: P# J; X: p) [' b6 l
let sum-money 0; ]5 W. ?- h/ Y/ C, M: ^
while[j < [trade-record-one-len] of myself]" o$ Y7 e- _" g! @
[
8 N1 o( P" g) Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). j* \" U4 G. h. |
set j
; \% ^- ]* ]0 w8 W) w/ J( j + 1)
8 @8 E. `1 H1 z1 Q7 S
]/ d5 l" p/ v1 g
let k 3
* `+ Q3 l0 ]% d$ s7 zlet power 0# z$ c( V% I* I- \+ y, A& K
let local 0
% x5 f0 h3 P) y& T* B- T2 J7 W7 bwhile [k <[trade-record-one-len] of myself]! E' m) ]4 Q0 L( b7 s0 x
[
! h% I8 M& {2 x& O. m6 k/ Wset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ( T) e4 }" ]2 E# c, x
set k (k + 1)
$ t: Y5 X" p! ~& ^]2 h: e: S9 d( A; w1 n3 @3 j! V0 q2 Q- [
set [local-reputation] of myself (local)
: F: U* o5 I7 J- @4 C: b- w- e% gend
+ w7 N% |/ Z/ k  i5 n4 @/ {- k" T' k
to update-neighbor-total& i* G$ F! d9 |: Z4 e/ l

! ^4 C3 ~4 s$ \% W' n4 Jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 O5 \+ ^  R7 D6 w( C
, R& X( ?: o' o4 U$ M7 b* |

' t& o6 m; `4 P- r' t8 w! bend9 n% j8 F6 Q* J) g5 T
0 h6 n  x8 f! ]' `: s
to update-credibility-ijl 7 ]; H, I0 i$ ?4 j7 g

. O6 u' |$ G  ~. N/ z;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
! E4 b* s5 Y: T* E. [; N! G" x- Zlet l 06 K7 a4 u% V& g& B* [
while[ l < people ]8 e, f2 N8 @6 B8 F. o# ~3 j$ A
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
8 G  F0 M% w; N9 V0 d[
  s* s5 v$ u  I6 hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' s' m; k0 L  o) e' E; cif (trade-record-one-j-l-len > 3)
5 @5 J3 M& Z5 H8 q" e# f* X1 }[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one2 j1 F& r' n3 M; b2 B! f% J
let i 3! y, l& C& R# `7 c
let sum-time 08 x' H4 V* V  r) c& n. Z7 G% q. C
while[i < trade-record-one-len]
* ]  a7 `: W6 y. G% M8 y  Z# O; r( Q[0 p. W0 B% V1 _% Z0 J# O, Z* ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 O7 J- D/ F6 [set i
2 \) x5 A  b( \  n( i + 1)

& C" }+ k: [5 ^9 ~" L# Q9 u]
% a- h. T+ W5 c" j# ?- ilet credibility-i-j-l 0
) i; }2 a2 _  X3 [1 L% W;;i
评价(jjl的评价)$ w+ e  D% {# A& |& U
let j 3+ \6 X  ?: p1 J. R  k, h/ L4 w6 ]
let k 4
2 K% s$ G1 e+ c( ~3 ]while[j < trade-record-one-len]$ {. o2 ]' v5 l1 R7 j5 k
[, n' B$ b: ^2 N9 C5 V1 F
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
( }9 N7 ?& E$ n  K6 V& mset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
! U+ c1 }$ y) Y/ T3 hset j4 B' ~% z2 O5 l( t: A; z  a) a7 q: d
( j + 1)
2 M( i' j1 `' K7 U" U
]4 ~4 ^- g# j" D- m$ N
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))8 s; q  k1 H- S9 c

; I; w: {& u' |5 r  D/ p- l0 U. Y
3 Z7 i4 N! V3 Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% X) L/ H9 u# Z2 }
;;
及时更新il的评价质量的评价
4 b4 V! i5 h: F5 Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# a4 W9 H% {0 \1 ~% }8 ?set l (l + 1)9 i6 I: ?+ g# y7 N6 y  W
], c  F7 P) Y+ E3 O: ^. j
end
% L# I) U( t! M( b8 |# c
8 k. G6 C; k' y# u; ]to update-credibility-list7 E* t: ]3 o  |& A) R" |; `
let i 0
' x4 n+ j* ^# Pwhile[i < people]3 B$ m6 N2 c: N3 u
[2 E  g  `/ M# b( u' N1 Y& O, i
let j 0: X! Q* m) }$ D2 N# f2 B7 K( b8 M7 |
let note 0
' d5 N( C6 L# F  w4 }" x0 ~let k 0
8 M8 }" }5 N$ y" L( h+ }: Z;;
计作出过评价的邻居节点的数目
, ^' F0 E# ?' r5 D, s( `# B4 Zwhile[j < people]9 d: K2 v& Q/ p3 q& s" E
[
/ v4 d$ @: {; B0 d8 sif (item j( [credibility] of turtle (i + 1)) != -1)# R  }- _1 u. o" Q2 W
;;
判断是否给本turtle的评价质量做出过评价的节点
' ]9 k2 V' v" o9 X, M4 G[set note (note + item j ([credibility]of turtle (i + 1)))* Y$ o9 f# M% X2 Q& b: G/ a6 Q
;;*(exp (-(people - 2)))/(people - 2))]

+ {7 Y5 t8 E$ J5 s( Oset k (k + 1)
0 Z! B0 I% G* _0 j]
8 B4 g& e  y) J: Zset j (j + 1); V& c7 M  q. A) S
]
  n5 A) J. X9 y5 nset note (note *(exp (- (1 / k)))/ k)
/ T. c7 A. T/ m+ bset credibility-list (replace-item i credibility-list note)
5 L. T. {( W$ \! G9 |set i (i + 1)
# h" ], l9 n9 a3 T, B]. y% [6 k6 B* e7 X+ X
end0 i) g1 Y+ O/ {* v4 Q) `2 \  x

3 a9 X/ ?4 a& ~: D; E% [6 xto update-global-reputation-list) a" \4 K! o) s
let j 00 X7 a; p5 K/ R
while[j < people]- o* n( H. S$ U+ U* M8 q( ]1 I
[
4 [  {  M, C4 K" ^# Klet new 0
% z$ A2 P/ q4 c- G% _) @;;
暂存新的一个全局声誉
6 z( d$ p4 R" `  n% N0 a- `( F! @; flet i 0
2 ]. r; v9 |- j3 t4 Elet sum-money 0) @" Z6 g% x' H7 L
let credibility-money 0
9 _% H. f% p' l  ywhile [i < people]
8 O1 x8 |0 ^2 \8 {9 l[: Z/ F: `% k* B4 [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 V0 g9 h  ?) I4 }1 ?" @( o" P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 y3 k: t) M. l& Jset i (i + 1): k# h. z$ X$ H7 Z& l4 R
]  C2 @5 ~9 W0 L2 E# J! F
let k 0* e2 }( _5 K' F* T3 _
let new1 0
: B0 j8 g; G. r/ g% D; gwhile [k < people]
3 g- z0 T- N, X0 G. S[+ b6 k% V: w% X5 `% a. E
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money). M$ b& r1 D: S6 `+ |; K
set k (k + 1)
! C# m8 d% I* D5 W$ K5 h) []
9 U6 A) I4 l/ M2 ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 ?$ [$ o3 Y$ U+ Q9 ]
set global-reputation-list (replace-item j global-reputation-list new)+ D, w. k& L3 f6 [
set j (j + 1)* H% V  o$ p$ e! i
]
2 o9 b% A* c5 Q; O; a$ Hend
: c% I- P& Y! C6 E
9 w- |) v0 W& H- c! _, O
+ R  j! R- W$ }  d1 w5 }( G) D$ e2 V9 |7 _" p' M. e
to get-color
# _; D2 d  S: q( u6 p* |$ r
% o/ \: J1 T$ v, B; Aset color blue
# A3 W9 w! B8 f- ?7 ?: \5 h
end
+ J5 E7 a. M, h: [5 O" x( e& W' Y0 z
to poll-class
6 z2 o- `. z! _6 a) ], g( Xend( y1 U1 B' ~/ Y/ Z
+ K1 H% \# Y* c& A, e# _4 L3 j. ^
to setup-plot1; I& @2 w' s$ D- T+ P3 E( {/ b2 P2 h" Q$ |
/ v* m9 R- D! u
set-current-plot "Trends-of-Local-reputation"
+ q; Z- O! x0 k& c

# y  g2 r# D4 z  Dset-plot-x-range 0 xmax

1 N# i6 L4 D* N5 `3 E! _, O
5 X1 Z3 f8 n( r# }set-plot-y-range 0.0 ymax
  t8 B2 u8 V5 p/ B) S1 u! e
end( @$ @# {  X5 k  N3 I& h
6 p6 }' M2 `# C+ M; C% s' r
to setup-plot2
' ^6 D1 q% q( k7 d+ V* v/ s6 d( d/ C' e* U
set-current-plot "Trends-of-global-reputation"
! u" v  p$ h  a. x0 r; E% {

: V+ x' N) a5 K- t+ O' n# tset-plot-x-range 0 xmax

( }+ w) V7 z3 Y6 ^; ?# z
2 p1 H: L( E" Z! S' kset-plot-y-range 0.0 ymax

9 U5 r+ ?. [: T/ Yend
  B. h& z; V+ C1 R) h( Y; b
/ D" O' U8 G4 E. c$ \* Qto setup-plot34 O9 X& I5 b6 L: e
( R/ g: z9 u7 q2 v. X- W* q7 T
set-current-plot "Trends-of-credibility"

/ L/ {" V" X3 |$ A* a
4 l6 ~, G) Q% ]" v7 l) |set-plot-x-range 0 xmax

2 A( `4 F; W2 D( e! J4 p3 }( ]2 G6 C' H* N$ o
set-plot-y-range 0.0 ymax

8 P" B7 B; m) |: F0 ~end; [; o: h% u/ v; f- H& L3 x
5 U" M8 B* \, L9 z' e
to do-plots
* f1 X9 I" a1 n& E1 |8 ?, Fset-current-plot "Trends-of-Local-reputation"& G, r7 L" K  Q& G8 J* w
set-current-plot-pen "Honest service"
3 p/ Y9 }& S1 i  Rend
  i9 [; Z1 V! X; ?8 b+ d  H& Z
* @* Y+ a, y. F[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
3 ^7 q& w- [* D5 O+ Q! a3 ~  `
3 q; i2 ]8 o1 B/ b% \这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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