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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:
. i5 I5 H8 y0 P7 h. m* H3 Kto do-business 6 Q8 m( {  A& S6 ~# X
rt random 3604 W/ ~4 ~) q' h$ s
fd 1  t) Z0 ~  d. w. o
ifelse(other turtles-here != nobody)[- o! N' ?/ [/ O% K) C( j9 w
   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.
; M2 F# e! {  {8 _) H7 Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 D' k* m  r& |' n* c* h3 |  z3 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( A* V, i1 ?" f( |
   set [trade-record-one-len] of self length [trade-record-one] of self
0 H4 a. e& T/ G& P- q& }( l4 v   set trade-record-current( list (timer) (random money-upper-limit))
. p* O; O. f) w3 S
+ _  [4 j: Z* V! @问题的提示如下:
) B. t$ Z- p9 B* S$ M* `% @4 U6 ~4 f/ I
error while turtle 50 running OF in procedure DO-BUSINESS0 \; }: N$ E# l9 x+ p% g7 u
  called by procedure GO/ A$ R; C$ v0 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. d# k4 y% J' a
(halted running of go)
3 k. h: i" R/ I5 J6 V+ O2 A6 B* D
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~~
- d) a; m$ _3 c, T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
; M* F; H2 E2 W* b; \7 Oglobals[& M% ?5 O2 d4 g/ D) Y% m
xmax3 Z- w/ W! n! Y" g, o# W% C
ymax8 t3 t' q) f8 ?; F5 N6 W0 D
global-reputation-list- B" n3 m3 G& q+ e

; q: H0 j- j5 j2 p;;
每一个turtle的全局声誉都存在此LIST
3 X& A) d  }& e9 @credibility-list
* t1 Q9 d0 z: C  l;;
每一个turtle的评价可信度1 m, [6 ~3 H- U( y+ d# r/ l3 g
honest-service
  s& j% y  F( I9 Aunhonest-service
+ {  B$ }+ _1 o; G5 |" V# soscillation
: n3 s' X. ?4 Irand-dynamic
7 T7 b. _- ?% B/ D  K& []+ H6 {+ L, N! @+ h2 u% [0 s
3 S! A& }! r% H' d
turtles-own[: x6 z' r* W' P0 U
trade-record-all; U9 s5 R. v3 `, p
;;a list of lists,
trade-record-one组成/ i3 j8 l7 e5 _) G+ K' o
trade-record-one) d2 Z' B' S  h4 s
;;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 n7 L" M& W  a" j0 ?; i

' P0 ?# {& s9 Q8 V1 @) ]1 d2 d- [' n8 @;;[
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]]' K' k4 L# m) S* C+ M. h) N
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]
0 u; ~8 T7 _; `8 Acredibility-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
. y3 {6 k- O5 }) M, n" N# Nneighbor-total( I! b$ U$ g. `
;;
记录该turtle的邻居节点的数目, }( P% |$ D  C" R9 {
trade-time% Y. F, D, e- R5 V2 j- B& }. a
;;
当前发生交易的turtle的交易时间0 u2 t. C* U: N0 i
appraise-give/ ^0 x1 L  h# z0 S/ ^2 t  s2 ]3 g; H
;;
当前发生交易时给出的评价
/ F3 `) e+ |+ N+ \" x) Oappraise-receive& e6 Z/ x$ p6 n% [# ]
;;
当前发生交易时收到的评价
- h2 Y+ i& h7 t6 z9 \( Zappraise-time
6 _. C& ~6 ^0 {;;
当前发生交易时的评价时间9 [0 ]7 L1 V7 V7 W/ @6 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, e- c2 H; I' M7 p5 L5 Ktrade-times-total
, j  V& t0 f6 Z6 P( r7 w;;
与当前turtle的交易总次数
7 v2 n8 W9 ~7 P) f; |) Ctrade-money-total
4 B. c7 L* j5 z- L2 \6 d1 i;;
与当前turtle的交易总金额1 t0 B5 B) }0 d, b$ O
local-reputation
. v$ U" M0 }; H6 k; a4 pglobal-reputation; b" Y, G9 r1 c
credibility6 O9 S1 z$ @! B' `' P, `! S1 Z
;;
评价可信度,每次交易后都需要更新
5 s! P% Y% s2 `: `6 S* P2 J6 scredibility-all
: _* |0 A) r& y# v0 s1 I  r: }" d;;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3 t  T% g! _' p+ ~

: Q& r! D+ n6 n+ @;;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
( R- T9 d4 t. g+ r. l4 ]credibility-one
# @( \$ ~/ _! d3 S6 s. q! E;;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
0 v3 C, S1 [0 x6 f. b1 H' H* kglobal-proportion
" q- s8 X9 u+ G# {customer
: V$ C+ X/ J3 A" pcustomer-no. @3 A  v. X( X
trust-ok) u. F4 N/ J7 e! h/ R
trade-record-one-len;;trade-record-one的长度
- B  i( [' `4 c. @5 ~. H5 ]% Y]
' f+ y; ?7 v6 i$ R" ?; z
* ]5 y; i5 j$ I/ l;;setup procedure  N  }4 x# ^9 S# s" E
- R" e, d9 h% v0 z8 k
to setup
% n# v, R, c. x0 s: C" O6 i" X! `' T  _) [* S( ]6 }
ca

+ n0 m$ h% {8 v* t1 ^( I$ _. E% H8 n- W1 i  P7 @( A+ P/ w
initialize-settings
" c" q' z* s/ |
6 _1 `% z. c5 u" s1 c- n- k% P
crt people [setup-turtles]
3 O. \; G9 c( [* C: a& a

9 `$ q) }) {$ S1 j: Y. oreset-timer

# F) U, [2 R/ l9 u! S  R, r1 t4 X' D: v: _
poll-class
( z$ |3 q$ P: t0 u1 c" Y# M9 n
2 E7 u, o- R/ h! v1 R( d* b/ v4 ~2 J) U
setup-plots

* K* [. ^7 _' k3 t/ |6 |; F! _* j9 V' G" @: r
do-plots

+ {0 q0 u! F7 ^1 y: Qend3 Y1 \- g4 ^& F( }
8 w6 c6 g4 K+ ?! V
to initialize-settings5 N# |: l9 ~* r

7 u* l1 i; s9 Y- tset global-reputation-list []

2 T# |+ X, y0 W9 c3 B1 ^2 f$ N% o% u- R. T  b0 b
set credibility-list n-values people [0.5]

* O$ n  c' r0 ^- {# o. X4 z) y# w/ z; E
set honest-service 0

) ?2 S, T1 E! X' l8 S7 a2 V# u: _
/ w. ^: z- _  ^set unhonest-service 0

' y5 r% u! w5 k# w! b, ?$ m2 o3 f2 b1 l9 A
set oscillation 0

9 {1 \& e& g3 k. |, y
/ x+ [5 ?- N2 kset rand-dynamic 0
1 O3 f/ G5 L' n# s; M5 u# K
end
# _1 ?" b( I) Y! P/ I
: y1 X# |, W2 W2 G5 mto setup-turtles
7 c. }. s( }, f$ k$ O6 hset shape "person"
( ]; j) z' ^2 T7 J4 O7 x$ n+ ^6 ssetxy random-xcor random-ycor
0 U+ v# J2 G! S% J! j5 w! v% h$ H& bset trade-record-one []
; M8 m8 i* o& ~, ?3 r' V5 z
9 X- Z& I! u, m! X( [* ^
set trade-record-all n-values people [(list (? + 1) 0 0)]
# l) n1 B5 a3 k
0 O- ~# A6 [0 Q' ~; e' }
set trade-record-current []
) B) t. }7 X. K: A7 sset credibility-receive []
; S" L( c9 f7 e2 S0 }set local-reputation 0.51 h+ ?9 j* v( C' P! k$ p+ i( |
set neighbor-total 0
; M1 |8 N8 N$ Z9 d9 J. g: }set trade-times-total 0
1 |( u6 [( }$ uset trade-money-total 0$ q8 X4 b5 j% c3 R; ~& @( X6 x- \
set customer nobody
: I/ h9 F* O2 b, i6 zset credibility-all n-values people [creat-credibility]
8 e" \2 m6 s2 `set credibility n-values people [-1]$ D( n# {+ |3 Z0 o5 A# I, k
get-color
$ A, h5 P0 C, E" T9 Q
( b5 U5 g8 L! a0 A7 q
end
! }2 I2 M/ j5 j& u) Q" v+ E0 `6 i+ {) p) [
to-report creat-credibility
% F- K9 p" Q8 L( w  G# y+ Treport n-values people [0.5]0 q6 G% |2 M% g' L* B( l
end/ V9 ]8 c% V% R* z6 G! |6 e" Y
3 ]$ f3 X$ w) M7 I) z, F
to setup-plots
  s) `8 P; D2 U( i
* t. }' S- J4 _7 w/ A- Tset xmax 30

/ J8 q! x1 S- G2 ]: A" g5 e3 u
8 H1 E2 |7 k0 H# ]set ymax 1.0

5 T; i" ^3 r- \5 N- j2 t  u' Z6 E9 K, d9 V* r" d1 X4 X% D
clear-all-plots
8 D- ?  Z0 i" ?9 ?/ r0 e
/ h0 r* F+ \, a; a7 n
setup-plot1
7 h2 n7 l. p2 f, J

9 t6 G( @' W6 z0 M/ u. Ksetup-plot2

8 M* ~! K# W6 H$ Q' M; M' q5 `- Z+ c8 ^
setup-plot3
' z8 `) Y' d* g
end' L; |; Q" B( x8 }/ T& G
$ r7 ^9 c! F/ W! {
;;run time procedures* U$ L) g1 I8 ?, S

# h# o- A* v+ c) W& `- Z& S' }to go3 B( _8 K) c* e( Y5 L9 H* n2 b2 }
: k# G- k/ A* m# H
ask turtles [do-business]
, u/ v7 h0 w' t4 }0 ~
end  R" O& v2 j1 `( l% Y7 I) ?

  H  J& u7 J/ }; f3 |to do-business , q1 n& a* t. w: h/ v' y
. M5 _0 s! e! N: F; e
+ G2 a9 ?$ u, T# `) K
rt random 360
4 T$ t, u5 h( H) c
, v. v' F0 P; ^6 @7 f( v
fd 1

: X; |9 Y) j' O3 V" [% H8 R; ]/ T& S  N3 Q  A: V) b
ifelse(other turtles-here != nobody)[
  V" c' N6 k6 D# T
* E+ x) Q4 O( C5 W7 n9 N) g0 m
set customer one-of other turtles-here

9 t$ C. V8 h  i+ ~$ P: q
7 N- f" C" ~9 q4 z7 v( K+ V2 S+ n1 w;; set [customer] of customer myself

) }7 S1 w% a; W/ X5 f1 R9 L: R" w$ A
+ j! q& d+ |& u8 u! A/ ^set [trade-record-one] of self item (([who] of customer) - 1)
/ T- x' a6 h0 g3 M5 ~$ x# L3 G[trade-record-all]of self
, \( Z7 U3 j0 R3 ~;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 O$ Y7 h+ n/ W( l9 _0 i/ e

& }) u. Q& @# R, `9 pset [trade-record-one] of customer item (([who] of self) - 1)$ y' E$ w" Z. Q  G9 E% D4 f( o5 H% {
[trade-record-all]of customer

( X3 G7 E, C$ l; o' p( d
/ r3 q6 k8 I; R* H9 I  Aset [trade-record-one-len] of self length [trade-record-one] of self
8 e7 o% \  z) |4 x+ v

. q$ u3 W. a- I" v) C; ~set trade-record-current( list (timer) (random money-upper-limit))

: l" {3 V) f  ^
" Q9 M4 y3 \0 T' W# Dask self [do-trust]7 f' ~6 n) d% z0 e: r
;;
先求ij的信任度' A5 N. T+ o. I* I- o

6 T! `7 B; E. t& C4 K0 E$ Yif ([trust-ok] of self)  H* j  C: _# c. m4 S3 @+ X. a2 q/ `, ?
;;
根据ij的信任度来决定是否与j进行交易[
- J% i' W, `8 b: L3 qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* X  P- C0 T+ z2 ?
3 x9 j7 h$ {2 C6 @- P$ W+ }[
. E( z( B7 l9 O- W

  _5 H- m! e+ e" ^' f% Odo-trade
# U: r. Z& R) j, P

  j# G8 K5 J6 j! E( \update-credibility-ijl
1 j) Q) n0 s' X' I; U% i1 @

% h6 J! ]% L6 E9 iupdate-credibility-list
3 L6 Y- i9 m% B! C

# I( I$ `8 l7 b$ W& ]% R- f. @+ t7 ^. C/ _
update-global-reputation-list

0 _$ C3 j2 n5 z& P0 r+ ~8 f3 G( n6 t2 \
poll-class
/ y; @$ C- n* o' T
7 r( a* @; N0 a9 ^
get-color
0 T8 c; \& u! a6 O3 G) p* O8 ^# g7 U

8 t( X8 x; }: L- p]]
3 l' H% }1 f% b6 q! V+ [
' h9 a7 Y" T' B, ~;;
如果所得的信任度满足条件,则进行交易
0 k- |; `$ j. p7 _. q& i3 J
4 m+ W9 v* @/ l  F5 T, C& N[
# n8 q- h# T5 D4 a/ b

" s7 U( V) G/ z# E6 `rt random 360
) Y/ C0 Y! p! z: a3 J
: {0 T, W6 N- U+ i6 T
fd 1
4 r5 X/ M. c7 y' b5 |3 `
7 d- `5 M+ n6 z" S& C
]

2 V) k  g0 d* z1 t
* T/ R6 L2 S+ s. K: J) ?0 Jend
3 u9 F9 t/ O) |8 d

, `9 C0 F' O" rto do-trust
9 U# @* w3 K* E) o( ]$ M5 _7 i% Xset trust-ok False
1 w/ I$ {/ i* `7 F
( n* ]1 ?1 s2 M+ |" X6 f- r
- f  }8 n5 e) M& J7 g2 ?5 V" C
let max-trade-times 0
4 U! @2 v1 Z* Z4 w+ ~7 L3 t) Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" B, R/ k" O$ Flet max-trade-money 07 i* p4 v( d) [6 V1 S$ E! p* [" L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' }, M0 W. q* W6 z2 H' t3 b0 Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 y$ K8 ]2 ^, A/ W
( i7 a. X: e! W! j( R5 E" Q
$ @6 R! \! k) S
get-global-proportion
3 D/ E8 I/ {+ elet trust-value
& i) X& i# m. L5 K: A) m% rlocal-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 J$ }( c! m0 O' `8 Bif(trust-value > trade-trust-value)* b1 X& P" ?& _, S
[set trust-ok true]
; g( a" S; n: G/ C$ j7 |end: w) V; w4 V9 C

% J) J( s! J# E/ j7 Mto get-global-proportion5 `' Q8 F  D5 O# H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ Z  F2 N3 P) ?, R, j' W1 ]& d[set global-proportion 0]+ H( l) m% y% H  Z2 w1 ]
[let i 07 l# w% a( R" `: z. x7 A3 Q# m
let sum-money 0
, ], z0 |0 M& ~' Hwhile[ i < people]2 }) D" I" N( x, H( |( p5 h
[9 b( u* E9 B) j+ t( E, k( o7 j
if( length (item i
/ ]5 ~$ m3 D3 A1 h* S3 K: \[trade-record-all] of customer) > 3 )

6 s- u0 V+ y! J+ Q[
  H1 c( C5 W2 P" e% zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# q0 O5 Q9 C0 ?1 \, Q: f  f1 S7 ]
]
, j' U. I/ q! c$ T4 N]
9 f3 {- H6 N+ Vlet j 0* }& L: f' i( P3 ^8 E( U
let note 0" e. V) |- }# ^  }
while[ j < people]
/ A0 |  s( o" @# w& n, |0 f[# Q5 W+ a! Y% k+ A- V$ D% W& F
if( length (item i: O' _6 q# ~4 }# O, U7 n
[trade-record-all] of customer) > 3 )
; X' C) u' A3 v6 |4 ^* G, m
[
0 D8 j. E5 N8 u& @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  [1 Q! M  H; P0 W+ h: n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 H# u- C  X: G! N5 D6 R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ O! q6 C7 x" u* s& R
]
. ~* x  D& z+ Q]* m3 B) p5 B7 T* U- |
set global-proportion note
; `3 d7 P; _3 L! j]
! V4 X/ y3 N, s$ J( n- Mend; w# W2 z  N4 X$ ?+ ]: o) D0 v

, i- H* h# |6 i, Sto do-trade
6 M% X5 ^/ y; U;;
这个过程实际上是给双方作出评价的过程, X( o, t2 t) s  N: ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' h. _$ R& K8 b: `* V' K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  `2 X, m0 A! R# d$ t+ f8 T0 j, Tset trade-record-current lput(timer) trade-record-current" k: f5 C* C' F* K
;;
评价时间- X  T. o8 E: |7 r% p
ask myself [
+ W3 c! D6 |; p$ Gupdate-local-reputation0 W3 N9 d$ A" F6 |& C; {
set trade-record-current lput([local-reputation] of myself) trade-record-current( V$ t: K7 R5 i5 w
]
( e; k/ ?# `* d: Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# `. B/ l6 a- m5 e9 K. N;;
将此次交易的记录加入到trade-record-one
$ j( j5 P  B  o7 m7 z$ D* T( c. Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) q9 p0 J3 f" F% O% J2 Klet note (item 2 trade-record-current )
$ h  `8 T7 y3 Y! i5 o+ Wset trade-record-current
5 Z& F" A( q2 Z2 s(replace-item 2 trade-record-current (item 3 trade-record-current))

! J% b9 S( i6 qset trade-record-current
* \8 j( y/ T# D# V(replace-item 3 trade-record-current note)
( \8 l6 H% u, J) J
8 D* K/ V5 f4 `  f! L2 ~, Q

' E  K& n9 F! D4 i0 C# r( \2 L* Task customer [1 D# y  h5 Q  S- O  ^1 I# B+ e( c; [
update-local-reputation
& n9 y( `; v+ jset trade-record-current
6 }4 Z! Q& R6 w2 X* `! c" z2 [7 ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! X0 _# S8 ]- c+ Q) j3 v7 s: O# t]
% _3 E% z' K7 A0 U3 |6 c- V! Y. O8 O5 y9 M! b( c1 ~
6 B: q% b! F# i1 H/ ]- W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 e  z- s6 y6 o0 q3 C" c( q
7 k& d6 E, O. L; n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( J6 A; h" @7 K
;;
将此次交易的记录加入到customertrade-record-all
  ~. J; I7 L$ Rend
" a& h7 Z0 i  {/ A* }- M4 e
7 S3 B# o  O0 g; g# }* \: Rto update-local-reputation$ d4 \% U! L) Y
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ r2 ^' i! M- ~5 ?; g7 W
1 e% B. O+ C# C  A
  S  A( C7 N& v, A1 R5 s7 T1 N;;if [trade-record-one-len] of myself > 3
. Z& X; v+ G' l) C, E- I6 v1 r
update-neighbor-total' R) \; }( x3 d) L7 T
;;
更新邻居节点的数目,在此进行' w! Q9 S3 q. ~0 P4 l
let i 3
' X; j4 z' Q4 R. G$ ?6 M3 o: H& mlet sum-time 0
, G1 R3 Z- S, k# J* c$ X! i; I. Fwhile[i < [trade-record-one-len] of myself]- @. z% T8 U1 g: u; C( {0 b) j3 K
[. O) U* t# z% V8 l! e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 L; _; J  a) tset i% a9 D% @& [. d
( i + 1)
5 B$ T$ X; b5 F/ A
]
) B4 g+ A" }' N3 V* y; ulet j 3
4 h6 ]( F+ i+ g5 w& dlet sum-money 0$ t+ v4 O. `! ^4 A
while[j < [trade-record-one-len] of myself]
+ p- u! Y3 m+ f4 P[+ e. @* [9 N5 i6 O! x( J( q
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)
# D$ p  W% ^% j4 G, ~) M; E, [; t4 y! Q+ ^set j/ H7 @& H  G: W: p4 w9 b) w8 H0 ~
( j + 1)

( }6 C' T8 j7 w  b+ d. u+ E" I  m6 X8 W]
+ Q: K# ]5 g  q4 m2 t8 Y2 Xlet k 3
! b7 c/ `* o+ f0 Llet power 0
4 b; v5 e; ], d9 l) ylet local 0" A5 [9 C- A2 s. |* H
while [k <[trade-record-one-len] of myself]& s6 f! V* |! P- @
[3 ~8 o& D  R3 d6 w- x9 b
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)
* O3 {/ [9 o8 J# a4 nset k (k + 1)
* ?7 N% V. \  k5 N8 f3 L4 o# R. N]
! I' `6 D8 ^8 [set [local-reputation] of myself (local)
. z( x. D( F* M& c8 h; Rend4 v' P6 Y" z( {% S

/ @. o$ a. f* U/ c, k1 x6 P  {to update-neighbor-total
0 _" a) z' k0 N! x6 g5 }2 z, ?
. {, f) \. L$ @8 L' @: t! Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ f. S0 [  k2 g/ k1 o* z5 g0 v2 w! X- h
- Z4 P: c" i# I3 f( M  e# F
end" o$ B, |8 V2 K+ C
% V$ f+ H8 N1 [
to update-credibility-ijl
% y, ^8 S1 a& W! t/ P% Y: \% k) s, |8 i/ D1 R
;;
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。9 I0 F, B5 d6 Z% Y
let l 0! J; N0 O. L% o! O0 k( i' C5 X
while[ l < people ]5 q3 k) A4 S0 F
;;
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" a8 ^( ^4 M" I# t+ r+ C# p
[5 A3 P% Q) e  L% O" ]. U7 K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ F3 T0 ~" b; m# B. t3 t6 m5 k; vif (trade-record-one-j-l-len > 3)
' G  z3 q  c! R[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
% V# p1 m3 @, W$ F: ~* a3 L5 z9 Vlet i 3
0 q5 |- I8 J2 _9 M8 jlet sum-time 0% o0 M5 E. K! v% T# B
while[i < trade-record-one-len]
6 g" O6 d6 d# u[
6 e  E: v$ W2 Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- @6 [( ^' s& w0 h7 Q) N' A9 V
set i/ d8 f5 q: [! }8 S
( i + 1)

: z# F" e& I6 {# @]. ^8 H9 W7 m3 U
let credibility-i-j-l 0
4 I& ]9 t. ]: D* q. T) |  B. {;;i
评价(jjl的评价)# V9 R( R) H0 x
let j 3
. Y9 a( n3 [) ~  plet k 41 ?" ]* b& h6 [! X4 F( V
while[j < trade-record-one-len]
* d+ z+ c# |6 a- U" {! L' W0 H3 \$ l[3 ?6 Z8 [. o: q, }' v
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
) }0 f3 r1 U. w7 R4 w7 c* q9 {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), z9 g1 U4 k* v/ C
set j
. d+ }0 U0 C4 Q. `8 ]. @( j + 1)

6 @  I  Y1 R/ o1 f( X  T, n]& W+ w+ ?" b5 F
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 ))
9 e  x: }: [. M: X: B: v
3 }! @& \9 R$ i0 h

7 t" c& k) L5 ?2 m8 w- d2 ?. Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): D7 Y. T+ M4 q* I) A
;;
及时更新il的评价质量的评价
; V# ?7 s! f/ P" l; qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ e1 r$ O- K9 A5 B& D( jset l (l + 1)! z1 R- T* z1 C
]9 o+ H* M1 n# G- v
end
1 y1 y' J, d# Q6 k2 c- i- [* i
! j- @6 S. D, J/ J5 B) X! Lto update-credibility-list
9 Z+ U. d/ |& B( R) u, i. Jlet i 0
9 l$ q+ O0 l' y* U+ Cwhile[i < people]
  i7 M' ]  C, _[. j% {, _1 [7 B% O
let j 0
) n% p: X3 E7 e% f$ j- Olet note 0
; k  f, ]5 h0 J3 N- l9 Alet k 04 }! J4 N0 u! `
;;
计作出过评价的邻居节点的数目
6 n, R. Z1 o5 g, Wwhile[j < people]
; I' {- m) G( O3 s/ ^[7 ?8 }6 V$ Q# ^+ ^7 D, ?+ U! k* z2 Y$ B
if (item j( [credibility] of turtle (i + 1)) != -1)$ D9 u' _2 u1 N7 [) }( M" F
;;
判断是否给本turtle的评价质量做出过评价的节点
$ e, _% m# d0 V6 ]0 W7 S; W[set note (note + item j ([credibility]of turtle (i + 1)))
, f8 P) B; w4 t9 d;;*(exp (-(people - 2)))/(people - 2))]

: D( @6 g( k) C8 j" v% X1 n! Z2 vset k (k + 1)
. d- Y/ ~5 }# d7 Z]2 x9 U3 G6 @5 b. O4 E; t& D
set j (j + 1)$ Q7 e5 ~+ H; l
], a8 ?8 r4 ~7 d6 ^( E
set note (note *(exp (- (1 / k)))/ k)! W7 h" L2 D+ P# h6 f
set credibility-list (replace-item i credibility-list note); e9 @3 b. l+ h/ O/ i  |
set i (i + 1)) \( A: m  A; C0 l5 p- z1 F: ~
]
$ Y9 R3 d$ \2 l+ u) Lend/ ~) D. |( h4 L
( E; W7 |- A8 U9 B; ]4 \
to update-global-reputation-list
% ?+ s# b9 T7 \" ^+ D8 ^( Blet j 0
! O/ p/ t2 |  \while[j < people]) b5 X1 q- Y' @
[
* U# \. g' r$ o. R. f7 j% Glet new 01 v# K5 D$ `$ _7 E
;;
暂存新的一个全局声誉
2 o" {+ L; _# l" m  _let i 0
0 H! h! `  k8 v# O# E3 `  _7 _let sum-money 0
& f' n/ o4 H3 c# dlet credibility-money 0
) E9 W& a: P5 S7 f- Wwhile [i < people]% ]3 Y5 [7 E" {. Y
[* }6 p# h$ Q4 V. A& B7 b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. J: j8 j4 D6 o# K" d! Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) w- e1 T2 ]% a. i0 |$ C7 [
set i (i + 1)
0 F: Q% ?$ X& g4 x3 ^]
9 k% K( F; m6 c  a$ ]% P' Wlet k 0  N* L$ U2 X3 P  ]3 P$ D* r
let new1 0
2 A7 `. E( P# l8 A* wwhile [k < people]
" o! Q0 k: @% ?! a  n[6 `7 a8 u5 i0 ~0 S3 ]
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)7 q  S* G3 B: u; z* X
set k (k + 1)' E* J* ^6 M4 e; W
]
+ J+ F" C0 r4 [! hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + W' a, K4 E7 N( o' @/ B
set global-reputation-list (replace-item j global-reputation-list new)* D: u* k7 B6 T% L3 m2 S
set j (j + 1)! F/ I9 R; E, [& d
]
6 r' g& M% B  M# c0 X  T) n6 {end9 m$ K4 U& S6 Z% V0 W
, @- r$ i1 U/ y3 u' @3 r
5 t4 P# d& S9 ~6 N) q

! L- S) u% `! j$ ~; z  r6 ?to get-color
! C! `- l' w- L
  g+ s6 r2 c5 A: q2 U! n$ Sset color blue
5 J4 Y7 [% ]# m! J; W+ \
end7 t0 @/ r: a  \# m5 p

7 J* }0 H& O  q; a6 j( _$ z. Eto poll-class9 ^& g/ L3 Q2 Q! @  v9 S+ n
end8 B5 R4 x$ |* K2 z" ^7 {3 F, u
* h) l% o  h, L' S- C0 C( ?9 y
to setup-plot11 e5 z" ^# y2 p2 W8 ^
- t( ^/ k7 O- j
set-current-plot "Trends-of-Local-reputation"
0 O* q: A! E" Z2 o: w
1 }& ~0 w5 [- H' d) k% O; y# g
set-plot-x-range 0 xmax

( r  H5 C* I+ s, t( V+ O  |: ]( A1 s( H/ W! p. ]" K
set-plot-y-range 0.0 ymax

+ Q# _. I2 L( Z4 P- D, q% ^  send
% v9 p0 V7 s- j1 J* V1 L& S# O1 d7 T/ a3 e8 Q! X5 z
to setup-plot2
8 D+ [( Y" g) y9 j( d0 [" n) ?/ Z0 K/ l6 E/ R
set-current-plot "Trends-of-global-reputation"
' F2 u  x0 K* T7 k- O" a
$ W% q) S& F3 f' n" q2 k
set-plot-x-range 0 xmax

  Q9 f! Z- a8 g% _
4 P" `6 }# b  P. N& T- Hset-plot-y-range 0.0 ymax

* w9 v- h' G! r6 {" {9 Tend
( m. T2 f( v  |' B
* y# Y; C( M# d1 N" x  N* @& vto setup-plot3* o) r+ P, ~5 L4 y
5 x" G/ F% g0 U+ |
set-current-plot "Trends-of-credibility"
( V8 M5 E/ Q) j6 L% E
" {; e. y0 r$ G9 M7 g
set-plot-x-range 0 xmax

  z9 Q& W5 m/ P) y* V) i" o7 w# g4 z+ \5 V2 E$ D) v$ S
set-plot-y-range 0.0 ymax

$ y, l2 v: d0 J3 m; z; E9 Xend
& \- i7 O4 D6 V5 ^- w/ w
1 m5 O- p  P9 R/ I+ Mto do-plots
( g- Z4 P/ W1 d3 W/ ^set-current-plot "Trends-of-Local-reputation"
+ I" u, g2 O8 L  Q0 \! hset-current-plot-pen "Honest service"% }6 J9 G# N$ e/ D% P  Q3 \1 J4 N
end
& i' q) a1 W3 o) N, ^6 c
! c. d( M) H: m. z. H8 T" o[ 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.  R$ v: K8 J  m9 d3 J
! }+ z# c: g8 x  r+ f' g
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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