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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:
$ k1 @) ~- C# @8 a7 {- Bto do-business
- h4 q2 o" l4 O9 ~; G/ g8 K; R rt random 360/ W1 [8 [: k1 @) _. _( }# r* D6 r' e1 E
fd 1  D/ }' S& S4 A# g# X( }
ifelse(other turtles-here != nobody)[1 S  ?/ P. g0 R: |- P
   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.
8 N# ?. O9 C; e) {9 T   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( r3 K. g0 ~% f$ f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( V# z( K& X6 t+ P* j8 ?2 L$ ?4 Q3 Q   set [trade-record-one-len] of self length [trade-record-one] of self; L6 i) ]* s* g5 Q8 B
   set trade-record-current( list (timer) (random money-upper-limit))
& `4 ^6 P  M+ x  U  _, g
7 H; [& r' y" I8 l5 D0 {' B问题的提示如下:
& h+ j) n" \5 ], r+ P& G& S- ~9 \9 X6 F9 D9 c
error while turtle 50 running OF in procedure DO-BUSINESS1 u" I! ]: K" k& v0 ^
  called by procedure GO* M( Q' i5 Z, u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, f: n8 _2 a* b1 ^
(halted running of go)
" q2 Q/ l$ w% I7 a4 w
5 k+ _8 [4 u" Y6 u- a) I/ a8 A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~~
& A( W* O$ u/ X8 `) [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  R4 A3 k+ X; r6 J8 O* E' D
globals[
1 \/ {5 D, v/ V- b# axmax
2 x2 R5 m' P6 x: ?ymax7 k2 X+ K& Q% @* a  r
global-reputation-list
4 w; G8 g# w. n% o8 E2 K0 r" a& C: z; I4 Y6 ~0 Z* J3 A+ a- r
;;
每一个turtle的全局声誉都存在此LIST
3 ~( b: E; j; k' v/ g+ Fcredibility-list
5 {5 F1 D7 p/ S;;
每一个turtle的评价可信度% {. S. m6 X: ~  R  T
honest-service3 s, N; \% F" A# H, w- L! F/ [
unhonest-service% y, }7 h2 W* Q, Z& k
oscillation
  k: N' z( r" a6 X9 q7 }0 ~1 srand-dynamic' F1 W  d3 V! u
]; z+ i% C; x' x7 E8 K
9 p# a: Y$ h; [7 e* T. a$ H: w8 }
turtles-own[
7 \7 [0 A& p, p/ I3 n4 Btrade-record-all
; ^9 A, K3 g  O# z. o;;a list of lists,
trade-record-one组成1 T+ L/ }8 j: {; b* Z6 p
trade-record-one* I/ \& [( f6 C/ h# _" i% P
;;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 Q$ D. J$ ]$ M: [* A7 u8 r  W4 T9 C0 ~8 Z: L6 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]]
; o8 m, Z9 B, c# b% |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 H, M! ?- h5 W
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
5 V; N1 t# @( y. @. F$ E+ s& I( Oneighbor-total3 K$ y. |3 _3 J8 e, \' K
;;
记录该turtle的邻居节点的数目
1 M/ I' Y% A" G3 m  a7 a) e3 k* Xtrade-time
; B9 r. s& I; {: U2 f8 Y% X6 l;;
当前发生交易的turtle的交易时间
/ n3 h9 _( R2 c, s% Y) J/ j, [appraise-give& E6 K. {# D8 k# p* T8 ]# ~
;;
当前发生交易时给出的评价. x( P4 w5 f9 W8 U1 v
appraise-receive
& l' `4 g  _) A: k;;
当前发生交易时收到的评价: q6 g+ F. ^7 w* Y
appraise-time
& e6 z* @6 A) I" \# Y8 T# }* a;;
当前发生交易时的评价时间
$ A* e% g3 z4 {9 glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 e3 a4 l0 @# ?4 p, e/ X: |1 [" btrade-times-total- x5 p% m4 G: U; d& s& ~0 w/ m) x
;;
与当前turtle的交易总次数
" U/ ~1 p) R: e4 Btrade-money-total
3 A/ W, c& Q0 q7 |3 i- ~;;
与当前turtle的交易总金额+ x  j9 C, r2 C5 `2 q& ^* `7 S
local-reputation
( E, ?+ |  |) ~5 H) c# I+ h. ?. kglobal-reputation# p4 Z( c7 P& d' Y: \8 U+ x
credibility9 ~/ a, Z0 q3 a: g8 |3 J6 G
;;
评价可信度,每次交易后都需要更新# D, B7 B# ?1 y5 C6 K; Z; e0 @
credibility-all
8 x9 @" P' ^6 Z' q& u;;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
/ y9 j& q1 b5 J: t
  @0 C- X4 R0 h4 r;;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0.5
; ]8 ^, X2 [2 t& b& K. @% jcredibility-one7 ?& ^5 b2 R; d0 r4 ~/ T
;;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people5 K1 ~/ V- V/ h0 N8 p
global-proportion
3 {0 k2 `3 n8 ~7 y9 C6 ?' Ncustomer& c7 I7 N7 a+ t( {0 ^
customer-no$ z& L* j1 [! {9 h% d  N% C1 e
trust-ok$ O1 a6 C. |1 F$ S- b
trade-record-one-len;;trade-record-one的长度
6 `0 _, j7 R4 r0 A% o+ L; q]
' c" N# m6 Q3 ]+ n  t# e5 H' f* ~& p4 |( v" v, Y/ t
;;setup procedure9 O  j$ b7 q3 ~8 A) c6 |; c
9 w! n# U1 e& a" f9 r+ J: E
to setup3 z- z) [4 G* v! ^  N7 m
+ Y6 r6 i4 Y$ Z5 I" S
ca
8 \9 f1 _% S5 |* ]* T
5 L/ a% ?9 b' y! T, k) {6 b& s: E  O
initialize-settings

$ O0 H$ P1 u3 _! j( a
% V  v$ p7 F1 L- b7 tcrt people [setup-turtles]
* F* P, I: ^/ ^8 l0 ?

% R. ]7 X$ u. H- ?1 l* @0 \reset-timer
" R( K; n1 H( P7 b/ U6 k

3 R. v1 l! Q# m" z2 opoll-class
' b& O3 C# C2 o
& c* A1 \% A+ o3 z( @$ T
setup-plots
/ {9 z# b( H6 t" d7 J( K# j7 Y- \
) C7 |1 K$ I' ^! Z
do-plots
3 ^: v: @; l: [
end
( k/ \9 B# Y: L. Y& O. M, i; z' J1 o! R
to initialize-settings
$ T" g1 G# Y" [
! w- i5 v5 }/ d' i( r, |1 Wset global-reputation-list []

) ?6 k# @* J* {6 l/ j% [  t% B) N
' }  z! y$ N" h6 y, T# U. z5 ?: ?set credibility-list n-values people [0.5]
2 b4 _5 B- x8 ~! f/ h

3 K1 `. u, ^* T/ Q0 a  lset honest-service 0

7 M0 x* b+ l- Y" V2 Q0 x- E
/ H4 l6 u$ n2 {2 |$ Dset unhonest-service 0
. E) F; r, g* G. {5 u* m
, @( R5 x) O' Y
set oscillation 0
4 G# c' h5 X. z: F* S  M! S
4 |% x0 ^! R, u+ t
set rand-dynamic 0
9 K% R& N' K" c; F
end
7 T( ^8 E9 V+ e
8 N" R( m: ^1 G& _9 o% Fto setup-turtles - w: s% H. }& _, i1 q/ p2 v
set shape "person"
; I$ p6 s0 f  C2 w" c1 Q4 G5 esetxy random-xcor random-ycor
( B8 H  ], q$ gset trade-record-one []
4 ~1 Q* V/ t, L* `* i4 @6 T

9 O: H% i5 [/ A; v, r" `# Tset trade-record-all n-values people [(list (? + 1) 0 0)] ) C. V1 M3 _" B" z& C

* {* W4 Y8 M( `- Aset trade-record-current []
9 F0 `2 R8 r6 F6 Y6 x. i" yset credibility-receive []- U- F- u9 Z& ~$ R3 A% E
set local-reputation 0.5- Z2 M7 q' c) t+ w
set neighbor-total 0
! K& ~9 |, j! ?; u% L% fset trade-times-total 0: p' w2 o& M! Y" |- i
set trade-money-total 04 ?- n5 l1 e6 x) w2 \! K
set customer nobody5 A3 o; \* B& s+ ]+ Q4 X8 o( p
set credibility-all n-values people [creat-credibility]; n0 @1 ^: V* ]4 f
set credibility n-values people [-1]  W8 d: W! X5 ^( a
get-color8 ?" ~4 T1 p6 ^8 ?. N- v' ~

! ?" [2 {+ G: h9 mend6 G5 E  N1 R! Z0 |9 k- @/ Q; V+ k$ k

9 V; V* B$ [, s; U/ i  R/ Eto-report creat-credibility" D, p* A9 {9 r# X. Z
report n-values people [0.5]- {4 p! n$ J; E
end
) r: o, M9 m  f  t$ h
* @9 z9 X7 U7 V" G6 wto setup-plots6 |( z; u0 f' `2 R& g
9 @" _+ o# E+ U' v3 H- g' {1 X
set xmax 30

# [% ^- X  k& c) v" B* E+ R  p. P  M, Z, ^
set ymax 1.0

3 I% R+ P# a& S6 V& g6 J( W# n/ L* }5 m, e  `; H4 L
clear-all-plots
4 [& b2 b! _$ f" y5 `5 N' B- z

$ Q1 M3 K. p  W! {( m8 P% Zsetup-plot1
: P6 P+ i2 z/ v

( p; [& h" h& \  }- Bsetup-plot2
( ]3 _$ `2 \1 M3 b% t

# H6 t3 j# N7 n+ }2 Msetup-plot3

9 e- ]# }4 K  \& I- H9 l0 aend
; ?7 D, x5 o7 ]; l; b$ p9 U. p: y3 \
;;run time procedures2 q- x, K0 S! X
6 u" }" N% ~0 c# `/ b0 L) i
to go
+ W# ]2 q  C* K) E( V# b
( N$ y9 Z5 X5 _, h7 Z5 |9 I: u  [ask turtles [do-business]
! a: ?1 m3 }: @9 p+ s
end! i! I2 s; y- e5 G! F0 k
% p! b0 r3 k/ o7 w. |) P
to do-business
9 ?$ R4 L# G& ^% d+ W; b+ ?
. C  F0 F2 z$ h' |0 A, E
+ u3 A$ i' N& ]$ C% ^
rt random 360

. u3 u) D' C) d3 m/ t) u# z
  ~, |& k) O+ jfd 1
$ i) j7 k8 W3 o2 b5 ^  |
( z% ~& ^/ s6 x" k
ifelse(other turtles-here != nobody)[

2 k( @6 n% Y9 J; v& S" \( j1 h7 B; Z) B+ @& l8 {6 [0 g
set customer one-of other turtles-here
+ I* o* T; [) V8 N7 B
; r3 f" D- X9 y0 O0 s
;; set [customer] of customer myself
: C5 k/ D/ ^% M3 }+ k5 z
) C& L& c$ l: |9 N4 D$ b+ P
set [trade-record-one] of self item (([who] of customer) - 1)% n& ^2 _3 v1 g& v) D
[trade-record-all]of self
% H3 {4 E$ s/ z0 g' T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, P& ?! Z( ]7 y& z* k4 z+ Q. i+ B: I# V+ V* a6 |: u
set [trade-record-one] of customer item (([who] of self) - 1)
) y; m% Y$ c; P  g' I! W  C[trade-record-all]of customer
  e6 K! O6 b+ \# }5 l3 C

( {8 [$ M: q7 I% Tset [trade-record-one-len] of self length [trade-record-one] of self
8 v  A0 g7 i# Q+ B6 U0 P
7 [- [1 T0 N" ], l7 `
set trade-record-current( list (timer) (random money-upper-limit))

1 ]" X  x& I7 m* R, i. m, v% j+ P+ Z5 Q
ask self [do-trust]
* F% r( ?( {) @;;
先求ij的信任度
3 E% k3 y5 e: w" x' p' I1 x, q) N" `
* L6 r. N5 {0 n% v/ f, |( R9 Sif ([trust-ok] of self), Y) [: w& I: x
;;
根据ij的信任度来决定是否与j进行交易[
5 X3 ~  R+ v$ U* n5 g: \0 vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 B  u6 h. |  o, k( C& M
6 S& K) i3 o+ @: I6 E; \) V( K- u[

% R$ }* }6 e5 [2 [
7 f+ |  P8 Z3 Z! f# Ydo-trade

* w" ]) i  Q) J9 ]$ Y) V3 G5 R7 y
update-credibility-ijl
8 h: r6 a' R0 b3 U( }  A* x' V
# J) `) G- n1 i  R* [
update-credibility-list
/ c: d3 o7 H" n8 L! T8 [
& ?. y% S& V. c) ^

0 g7 \! @: Z: c6 X$ y$ b( G3 Fupdate-global-reputation-list
/ T5 V0 ]  n+ z' J( s1 \
9 w8 {5 ~  H3 X$ F: k1 I" a0 @
poll-class

8 D- M$ d9 `7 i9 \9 {$ c/ F7 @6 ^7 C& E: t4 w+ o+ }- Y5 I7 y
get-color
: f" T$ T* A' |/ a

1 F8 L3 }. K# X% Z( R: c; W% J]]
/ z7 I0 u/ T4 h8 f& A" H
  o4 r& _3 o1 J;;
如果所得的信任度满足条件,则进行交易8 }: X& g$ E" b5 k, A0 S

$ c) C  P: E. F& h7 j[
  [0 t" Z4 @( ~; Q
! \$ {: t1 I" u2 O/ \
rt random 360
( |& P& F. I# x# g3 O1 B

  t1 r( E7 f7 ]- f# Z5 S! _  [fd 1
  [" u& T+ Y$ v; U. t. r0 Q$ K  M8 u

6 }" a5 R2 |2 v0 a# Z2 [: ?" g9 n* m]
# F( k% b6 _) w, d. f0 V; }) g+ k

1 _2 \+ w* a: y) M. g- e4 {. w2 oend

+ @. n/ }! Y6 Z, E4 z
8 W4 Z% Q/ _9 G8 Vto do-trust , M4 O( M% @9 i8 T  h' |2 S7 q; L( q
set trust-ok False- P- A: X/ {' g. B/ h

+ f5 s- N7 B* C7 x1 A( z
2 W6 T6 R: ^+ r2 M: k  S
let max-trade-times 06 h+ h, q  h3 Y0 {' X  {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) \+ i9 g4 M" n! h
let max-trade-money 0  b" H& n$ N+ E5 Q2 _3 v# X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ L* P% ~! H  z1 z3 u: K. @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# i  p3 q6 M9 j9 v, S
1 S0 c; b4 X, z  |

+ a: ]$ D0 D- P; nget-global-proportion
# e& b$ o+ O1 i* _7 \let trust-value7 G+ U; k) R$ \& p$ |
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)
* U7 z% T. ^7 n4 L
if(trust-value > trade-trust-value): Z8 U* y7 r$ s5 }  T- j
[set trust-ok true]: i& T3 g3 s2 x: {7 t
end2 {$ t' y1 \% b" E0 j. i4 O4 R
# v7 s' U% U1 D; l2 X
to get-global-proportion/ Z3 ~# ^% N. g# h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 f5 x- f) a2 u
[set global-proportion 0]4 Z5 \# Q' @5 U) g! |( f" Q: Y! P
[let i 0) J0 l* J; q; A; h  j& A
let sum-money 07 ^; V5 s+ f  ]! ?2 f% v
while[ i < people]
$ g6 n9 ^) T; H' C8 D* X- j[  V4 o: W& S) B2 E3 e
if( length (item i. `+ Y5 D' u2 Z+ u: Q2 q- _- N
[trade-record-all] of customer) > 3 )
" W* g1 @6 E2 |' k. J1 J
[7 x' n, o  L$ U% s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 {4 ?. R) L& t3 {]) X6 O8 t- A) A6 ?2 M
]
. U& e6 S/ m8 U: t2 x2 X( |5 Jlet j 0. W1 c9 l, `) G# a8 \
let note 05 L! O3 T/ {& e# ?
while[ j < people]
6 w0 z+ K5 w3 ~[% L  n/ c. V- |5 ?& q, X7 u3 h
if( length (item i
  y. a+ Y; F$ i% b  h2 z  ~) p[trade-record-all] of customer) > 3 )

  X3 M: A6 k; c3 B" m6 r" k[
2 @% V5 P' f  Q! R) n! I+ eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ p- C" j3 u0 J+ N+ \& _2 Y7 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ e" E  u4 z0 ^: c0 G6 d+ y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& {7 f% P0 @; R3 y3 t3 {
]3 ^  V% `# S  z  b% {! I$ m, S
]
6 ?- p6 d. [/ v( |set global-proportion note
9 k) E( N* {8 ]& `7 Y]
1 n6 R! D  D2 r' z# n. d) ?end/ P5 ^8 V. v) E- K' q8 p
) w& r8 A0 ~5 ?, ]0 Y5 E
to do-trade
7 W8 I) b; W# ?6 O/ K# ];;
这个过程实际上是给双方作出评价的过程9 G# V# ^: L9 y1 a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 z; H% n9 ~, r+ c5 K8 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 k9 @4 x1 N  R" Rset trade-record-current lput(timer) trade-record-current
% d7 N+ `% [: s. P" R" o;;
评价时间, T% d4 c% ^) ]/ H+ n* A
ask myself [
$ {8 F) P1 Z/ {) _5 d7 S9 @, ^update-local-reputation
. |. |( e) _7 o2 N1 dset trade-record-current lput([local-reputation] of myself) trade-record-current. C" {' W$ X& `8 {3 I9 ?% m
]# w$ w6 \9 {$ ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' l7 |" |+ q+ _% o0 p;;
将此次交易的记录加入到trade-record-one3 _# l$ u4 `& C) E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& n$ o5 @' \8 L' \let note (item 2 trade-record-current )4 C5 z2 o$ x) H7 U, ]) X8 V
set trade-record-current
/ R: U! X' g. q(replace-item 2 trade-record-current (item 3 trade-record-current))

9 Q! J6 Y2 p+ j" h: tset trade-record-current$ O0 i5 f9 o. f0 \& C
(replace-item 3 trade-record-current note)6 }# L- t$ E% S5 Z' @) }: V

/ H! Y. v; `/ h- z
% S; Q% `" i  n. s
ask customer [
/ O" }* z6 p3 j1 j# I: j  qupdate-local-reputation9 N' k8 K. V1 O
set trade-record-current
7 r! {) p; D5 W+ T* h! m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 {, j" ^% ]% ?! J- a1 H0 v% V
]- T) @) L7 Y4 `& b, u* g8 `

8 A: l7 O- ^' `# s4 C" p( M$ G& m/ k. X

% ~) x- R9 K& G! m! ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ I+ F2 `9 n* a2 F) Z: I

( |- \5 D# q/ |1 {/ ]1 sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* K$ Z- U4 i  ^$ K/ ~
;;
将此次交易的记录加入到customertrade-record-all  X2 N& V9 Q! e. _) u
end
& U% J0 ~- @6 H. p. \1 U! U+ ^& C; j
4 G7 U% {/ j0 n; H+ o, zto update-local-reputation9 h% n" _/ M# d
set [trade-record-one-len] of myself length [trade-record-one] of myself9 I) o, Q4 v  Z" {! G

$ G* e4 g1 m2 X& \( ?3 x
+ e) [0 _- P, U9 o;;if [trade-record-one-len] of myself > 3

  O: @8 B* B4 N2 M6 yupdate-neighbor-total
! W. ?  @9 t3 M! J0 l1 ?;;
更新邻居节点的数目,在此进行
9 ]9 x# h' [  M" klet i 3
. e" V$ [6 r" S6 ?$ e; [let sum-time 0' ^. @" e  n( E: U. S) r9 f
while[i < [trade-record-one-len] of myself]
9 ?5 k0 a) H0 i  q' e5 B2 N[5 M4 z6 z$ U/ V, g: Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 c/ p, l, _, F; M  A
set i3 S7 |* w; [  u' D# U
( i + 1)
) y7 c$ r+ Z. u5 z9 @1 l
]
8 _: |9 S& s. e) F) s! dlet j 3" _  ^( Y0 [' e. ?$ P
let sum-money 0
) Z7 D! l4 `0 D9 D  g0 _while[j < [trade-record-one-len] of myself]
* A( P0 `+ A1 ^[- N9 @. m$ x! g. f2 g, L) K0 t1 T+ H5 p
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! c7 ~- I2 T# c& W6 s! j% q4 `6 H
set j
5 h2 F# F6 z$ T2 K( j + 1)
+ n7 X8 t. [* n# W
]
2 J" L: m2 ]2 z( qlet k 34 o# \/ o& ^( s. q
let power 0- k$ |, t) Z% L
let local 0/ R  w; _+ D# L3 s; A: l0 g" v
while [k <[trade-record-one-len] of myself]
9 E% [; r) ^. \[' u0 P2 v: t/ V5 u3 O3 t( W
set 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)
. c/ ?1 Q" p: }1 ]& F) ]6 A1 mset k (k + 1)! ~+ |. d8 L1 p! }; }/ g# q8 h
]" N  o$ W$ {2 {$ N. }) l; P2 ^! }" }
set [local-reputation] of myself (local)( J! \% P1 f7 R% L0 j# }
end
4 [* C+ h/ M: e* A" `# H  e( o" J3 p+ G/ F+ d, Z2 q
to update-neighbor-total9 l1 ~7 N+ s9 F

8 T' i* S# B) Y2 u; hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( X1 [2 ]% @+ r, N. h0 r' j8 e  }( K) n) H/ X

* T. U. Z! i# j) C2 D7 Lend
/ D* h' D* e9 D' p* k. m
3 |" d" F7 m# U* y; x5 e8 S# X6 Gto update-credibility-ijl & U/ W- j& s" |2 w9 p4 O

) ^" U$ ^, `/ b  z7 Q;;
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。$ m& I. k; z+ [1 g# k
let l 0
# _1 S5 d- c+ L) ?4 Bwhile[ l < people ]
. B# R! ^+ l3 H  z. s;;
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
& L% u: p% S) T0 P[
  a7 g% A. J9 O3 F+ r% ?8 Elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% |; N: }( h' M
if (trade-record-one-j-l-len > 3)
5 l9 M- M5 t1 O: w! x/ V[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-one. f9 l; d8 A6 c
let i 3( u  L" [$ }1 }. [  Q! N  Y
let sum-time 0
6 c, V& c  \; a) `6 xwhile[i < trade-record-one-len]: g2 ?/ ~/ `  ~4 S% `: E( m
[% f1 G1 k. x- e# I5 h( h$ ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 L- n+ C5 E, \) @6 yset i. ^9 \; H. U' @1 d) K) T& Y6 _
( i + 1)
7 H1 i+ v- n9 d: z. f2 l
]
' Z6 @) n* q1 ^0 U, Klet credibility-i-j-l 0
: h2 T/ I& m, O; @5 ]: d8 g6 t;;i
评价(jjl的评价)+ ~1 f# p6 d0 o: d( E5 R
let j 3
7 U& T: e, C$ a% I; P% Jlet k 4
1 [2 m' D4 S5 l6 o! Dwhile[j < trade-record-one-len]
* d! G! ]2 S" J3 S. q5 S" h[
# P& i) E6 m. E! |+ x) ?0 `# }+ ywhile [((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! V$ b, W8 v3 p0 \) j6 W8 k
set 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)( p9 Y4 v! w/ x6 R8 x
set j
' Z2 p! x! T& G- Z1 X  ^( j + 1)

6 ?6 Y. I0 Y2 z]
& s4 ^0 M3 h, H$ m. pset [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 ))
/ Z& N; k3 T) {- B0 X1 G5 s( |1 W- z# U0 g0 M
! a/ W4 A  T) _7 a( o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). B# Q# m1 |$ z( x6 G2 W( X
;;
及时更新il的评价质量的评价
& d* \- E. e3 k2 zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- h: ]$ t/ s! f1 W. @! a- C
set l (l + 1)+ u! l& s+ C! a
]
& N2 Z% n0 c, s/ xend
4 q) W, S4 E+ X. e& E# ^# X0 a! }
to update-credibility-list
1 N: ~5 M/ W# f8 W: g  d4 Jlet i 06 i3 C) j! o: {5 q
while[i < people]& O9 k8 R0 P2 R7 R
[- ~6 A: I# J# I' f1 b  K: \
let j 0! V0 \8 ]' I: Q3 Z* J9 K. V
let note 00 a, a# n6 A4 b$ k: U! L) h6 V0 b
let k 0
9 L0 F; U' k# P, Z;;
计作出过评价的邻居节点的数目
6 K7 w2 W0 ?) Z- i( J/ zwhile[j < people]! E2 x! r! [4 a& K) b* p
[
2 K1 [) O" |- @6 d  T; p* g: Oif (item j( [credibility] of turtle (i + 1)) != -1)
$ t4 H0 W7 }" k;;
判断是否给本turtle的评价质量做出过评价的节点
7 G! F. r. g5 ^7 H; r[set note (note + item j ([credibility]of turtle (i + 1)))
  q3 x8 v' e; r- ?& h% h  y( k;;*(exp (-(people - 2)))/(people - 2))]
* g6 \. I$ e' O. `% |& C+ i& j) w- K
set k (k + 1)( d$ d0 S/ \$ X7 R
]1 c, r- C- o3 I
set j (j + 1)
' R" K" P# j" f; n]6 c8 N& v% w. N4 ^7 {/ H2 |
set note (note *(exp (- (1 / k)))/ k): x4 t, b$ L; {/ J) g! W
set credibility-list (replace-item i credibility-list note)  A/ a* u+ x, _2 p5 a9 b" P
set i (i + 1)
$ X! y/ g$ v% g% Y6 X8 @]
' ?( ^4 ?; {! x% eend
% w3 P& B2 J6 V8 B7 Y; R" J0 _; `, Y; q) L1 {7 p; g
to update-global-reputation-list
. K7 W+ ~; ^) T8 Glet j 01 g4 w/ q$ ?7 z5 V
while[j < people]
2 D/ @+ _& \& S, G[$ X% e! t' u/ O4 h1 \
let new 0
7 p# J9 D5 w! S;;
暂存新的一个全局声誉6 k( y( s( H- m5 v
let i 0
) ]6 R* z) G2 S* ^) y& v) Olet sum-money 0" ]/ ~) b& [0 M' J: P4 ?
let credibility-money 08 h! y2 w% }' [: q1 k
while [i < people]
1 V: B8 ]) U. ]/ ~[
$ u4 F6 W' q) t5 L+ Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& E5 m$ X  @- D# A9 i( E+ `! s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 Z6 {& y' I- \1 H. |3 c, K4 fset i (i + 1)7 V( r/ [% ]! ?0 m& S
]
; j' E- c' Z* ]2 R# }9 r  Z1 Slet k 0
0 K8 |" \0 C6 C+ elet new1 0) w% a/ o2 O9 i! |2 C# R7 u
while [k < people]; l$ \9 W( ~3 u, E, o& a' d5 ^
[
, R7 P- p4 W- `9 oset 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)
  B8 {7 G4 @+ q& c% Pset k (k + 1)
: G: R" L* X* l]% ?. W: X, U( @9 e# \, X5 p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. P8 A  W7 ?- Z8 J% Hset global-reputation-list (replace-item j global-reputation-list new)
% }4 j4 j' y3 w" sset j (j + 1)' k( x0 H& ^7 ~) J2 h) a3 N
]
9 R% ^8 \* @3 v! n0 W8 u' }end6 Z+ D! R( r% o/ h" {
, C. ]9 p  W; U

) \; _7 C( B/ t" B  @3 b  x, [5 \' k% P, p  I
to get-color
  d' }! c) D4 o# O  @! N0 U
& F  u- @7 P! C6 R5 Jset color blue
3 l- f" l# Y0 B- z
end
8 z* j, q- e/ m4 S
3 v  B0 L* z/ U/ C7 y& rto poll-class: j/ F. J6 [6 \9 \( C
end
; N* [1 B  M6 z3 n2 ]9 }* W
& J/ `! e/ {  E4 S, Oto setup-plot15 D' m" u" t! Q6 m

6 u+ D- k) d8 B9 n& V% bset-current-plot "Trends-of-Local-reputation"
6 c8 z. L3 O% P7 q
- g, X0 k8 Y5 g% E9 ?  L
set-plot-x-range 0 xmax

2 Y" G: w) y8 Z! Q9 a# _
2 t  r. J; E! _- jset-plot-y-range 0.0 ymax
' V* G6 Q$ r8 X% \3 I1 Z$ Z1 y/ s
end
* V* b$ k  K/ ^/ Z# g9 |5 F  Z
8 j; }* T! S# J9 {% x# _1 E  U  `to setup-plot2
( }3 s# {, S( S$ [% W4 D, A4 K& @4 x$ o* B
set-current-plot "Trends-of-global-reputation"
6 S0 W% Q2 T8 k) B3 A* a

5 D+ w8 Y& ^; b. l" {set-plot-x-range 0 xmax
2 f6 U0 z# r* A
/ M/ d- R+ N2 g
set-plot-y-range 0.0 ymax

: R8 q- N5 `) J; ]$ b  m9 Uend2 `' s7 x( A+ n9 i

, J+ P* X9 I5 d9 B' r8 gto setup-plot3
4 d6 J$ M+ f& a( G; x- D0 o" d) y  }, D" A9 p! G) |! P
set-current-plot "Trends-of-credibility"

, p( Z; v9 `2 _$ x7 w$ J
( z( A; H! A$ {) G) F: eset-plot-x-range 0 xmax
9 [3 L6 G2 k0 A+ w( b, Z
2 d( l# y7 J# M+ k4 K
set-plot-y-range 0.0 ymax
2 f6 H/ j+ Y; i3 O( B( X
end3 _, l$ V6 _2 `  I

3 Z( N* m$ H% r1 jto do-plots( d; Y* c+ a; ]8 N  Z
set-current-plot "Trends-of-Local-reputation"
$ i; G; C! f2 j  b2 u3 sset-current-plot-pen "Honest service"9 K1 U; Q& z# r7 K
end
7 I7 O0 a5 Z: d! l. }+ t
  E5 V$ M/ w4 Z[ 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.; c2 |% E. s. k4 p, L

7 {# k$ w$ `2 l# r! d% e0 x/ H9 H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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