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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 ^" x6 o8 i$ A' Gto do-business 7 t# z1 O- h, m
rt random 360
( n1 e2 D2 `3 M fd 1
+ a$ Q- a. I) w) R) |0 Y ifelse(other turtles-here != nobody)[$ n4 v7 t$ H7 Y0 `4 [
   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.
4 U) `# f) F) i$ r3 ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' n5 N. c4 J% B, f, v' u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! C9 I' O) O& \! g
   set [trade-record-one-len] of self length [trade-record-one] of self8 w2 |1 p" p! K- Z" s) ^* h+ w" A7 ~0 O
   set trade-record-current( list (timer) (random money-upper-limit))3 H5 G, k) M+ c2 Q

# Y2 n# f- S7 o9 }! H" F. i8 k0 b问题的提示如下:
# ?" ]* j+ U$ b$ @# `; W+ m7 g1 \: D
error while turtle 50 running OF in procedure DO-BUSINESS
' |! _& ~* V$ k: u  called by procedure GO! v' X: ^5 m* ~6 x' K  ?0 T# x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# X5 ~4 w/ b0 x# C6 x, T8 A
(halted running of go)
; d# h' R( m; c+ j2 z4 l% D3 i5 ?
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~~+ I, |6 o9 ^& f( [4 D( }3 s4 n# K
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
$ C* J; K/ U2 Q5 s" Zglobals[
- t" ^7 w3 m4 b4 Dxmax
" c" s3 ]' r8 H* @( T! qymax: T6 s, G/ Y$ }0 ]) O( c
global-reputation-list
; }& e& G9 ]/ e. F, k$ Z$ |$ f/ }  ]1 L5 \( t! ^
;;
每一个turtle的全局声誉都存在此LIST
/ A2 `$ K* p( z4 X4 b6 h) ~credibility-list
, H& o0 f' w$ ?/ ?; P;;
每一个turtle的评价可信度! R# l2 X3 R- ~; ^$ i/ |
honest-service! z9 q/ ?: z" B& L* r/ v; A; m
unhonest-service
& ]$ C: }4 r" H& B: p, soscillation
, ~5 E& T* f- h+ Brand-dynamic9 K; ?: K! ?# w' T0 I
]
$ q/ R; h4 P+ ]7 Q3 K% [* P2 J$ S* G3 c+ \3 m
turtles-own[
% D" C: {/ c/ Z* I( R& |: }trade-record-all
2 p! t% P2 Y9 c' o! B: z;;a list of lists,
trade-record-one组成
% d2 s0 W1 ^  l9 r- G$ X3 wtrade-record-one
6 A" q4 I' A8 ]- z% D# n  @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 W) y9 B$ O4 l. o' i/ {  N2 M5 m2 V$ p7 s$ O
;;[
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]]. n, _3 e( i, S9 [0 `7 l" W
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]
; J5 V' s5 E- f$ K! icredibility-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
3 o% B7 D! T* ]8 [/ nneighbor-total* P/ U- [- }4 d6 n) R7 h
;;
记录该turtle的邻居节点的数目
* h( u6 S  e$ R2 _7 V7 gtrade-time; G/ x! `2 |' s- y4 [+ a" T
;;
当前发生交易的turtle的交易时间
, ~. z! T) h  {( Rappraise-give
& [4 q% l: S3 @# z7 S3 l/ J;;
当前发生交易时给出的评价
+ J' d! p% J# A0 Qappraise-receive4 k! T8 n+ C+ F& p& ~2 B5 B
;;
当前发生交易时收到的评价. b; U1 I$ [+ N7 g0 R
appraise-time
9 }4 Z0 d6 t, Q7 T# N/ N9 T;;
当前发生交易时的评价时间8 C4 @3 n( C! b5 M# N: u1 }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 l. N3 P: I) N5 S7 k# o' mtrade-times-total% ]; o2 M: s5 H5 J) }
;;
与当前turtle的交易总次数
6 b  N& @2 K- ?& a  }$ ntrade-money-total
4 m; g. R* }2 s( D0 I8 Z6 j;;
与当前turtle的交易总金额8 f; ~, e# s3 ]/ q. q$ e/ Q
local-reputation3 M8 y% P% }6 p
global-reputation" V' W  i' [( O8 F) D* a, j
credibility: B3 A5 I9 G; E( L! J& ^
;;
评价可信度,每次交易后都需要更新3 q- e# V' ^, M( p
credibility-all. q7 S2 k, Z. |  T3 A
;;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
& `1 [+ F1 f: t6 z% v3 m( P: P; ~, |4 U% l$ B1 B, T
;;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
9 @: K7 q" z$ N, f6 e4 ^2 |9 o: E, mcredibility-one( U- F4 s& H3 D7 w6 d
;;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 B' W5 h  f$ Nglobal-proportion
8 E! C6 C- p- e' b! A2 o% K+ Qcustomer* r% z, W( K2 p2 |; J
customer-no
: |' n" V; o8 F4 d1 Jtrust-ok6 Q5 S+ g2 L& g5 m( K* @
trade-record-one-len;;trade-record-one的长度' G2 d: V; Z; Z2 ^4 D
]
' b! |  @& J) H& t2 p
6 P" Q6 U# K% D) R. U. l( t;;setup procedure
. `4 z" \1 R' h+ {' \+ D9 y
$ O5 O8 H5 D5 ]( Ito setup" G4 g) |2 x2 H4 M; k# \, z1 }

7 k' z& n4 F; X9 ?ca
+ I; X, L5 N+ B$ ?/ ]# w, X4 y8 p. b

0 [+ b! {0 X: R. Zinitialize-settings
# v  t/ D/ R$ u1 ?7 l

+ f# W" {$ z5 Bcrt people [setup-turtles]

8 V/ q# \7 }) P
1 M; V' v! M5 ^reset-timer

8 w* V$ S4 ^' V& R" {
! q1 f+ |& C- q) s' ~. Z" u2 ppoll-class

5 E" U+ I- v* Z# q4 L; G
& e7 p4 x# e" r3 D# o7 j9 bsetup-plots
, I0 c& r" e, j- V0 F5 @9 Q

; Q0 a" R8 Z$ G/ pdo-plots

1 J+ U; X' r1 [5 W) J4 Send
3 h0 i# Z& Z+ |# x3 g4 `# J7 w" K( e8 T6 L7 |5 C  [
to initialize-settings
' L1 T7 K8 _0 H& G1 p9 |4 X3 p5 n2 y) s% K
set global-reputation-list []

' w) Q+ w# ?3 u* i0 y! \) p* P$ Q6 v9 W' A7 u) v# ~
set credibility-list n-values people [0.5]

& h( X: R% |8 J7 Y1 I/ `9 }% }/ t7 J( Y
set honest-service 0

* b" y" `6 E/ e0 O) A
/ {' F2 L, b7 K4 Y, I+ y! o+ k. Jset unhonest-service 0
8 E( K8 h+ f" g- i3 W0 n3 e' N1 @  V

( R& s+ ^. r. H. P' e. H  O, U8 tset oscillation 0
2 _- N" d% ], G# W, x

0 j$ k. ]2 b9 i7 Nset rand-dynamic 0
) \3 W' M) Q, G1 H( _
end. P- b0 }- P7 g) x
$ r: V1 Y! ]2 l6 l5 A7 b0 Q6 n: t
to setup-turtles
" T0 K0 d0 \* y" Kset shape "person"
: B1 u; S* V  y0 A# |( Tsetxy random-xcor random-ycor
3 K4 R' y- `. k. B/ f4 mset trade-record-one []
$ c. D# U, ]6 f
# z- Y: F. m. ]# p- e& z; }( q; @
set trade-record-all n-values people [(list (? + 1) 0 0)] : K; D+ B) @+ Z; ?. y1 R) U- t

+ g% y9 T- t7 ^4 ?( qset trade-record-current []
$ \" }" J5 R  mset credibility-receive []) C3 u" z2 C% \: r$ }' {" q
set local-reputation 0.5
. a* h) H: Z/ T# Z$ u5 r% Y- dset neighbor-total 06 L8 P5 O' L4 u# @; J: C* |9 o3 Y
set trade-times-total 0
2 ?' T) C6 x1 K; T- }5 f' Oset trade-money-total 02 o4 K$ ~0 C& o1 v+ C! f
set customer nobody  ^4 ~- R0 `, T' P4 ?3 S8 y& Z
set credibility-all n-values people [creat-credibility]) A7 _) i% Q% S( H" ~
set credibility n-values people [-1]% y3 J7 Y* `- c, k
get-color8 d& l1 k) k4 g% a* d/ O! I6 j
2 L1 |7 }5 c0 w  H! D
end
2 h1 R- G) e$ \1 k2 A+ ]" i. H2 X7 v
to-report creat-credibility
3 _3 s+ \% |7 rreport n-values people [0.5]
0 K! x* u6 w. V# ?/ rend
* e' b* n0 T5 A+ k! s
" y# z' Z2 M6 a( H: [( h% b! {to setup-plots
8 m' a' S9 }0 r5 v* T7 r
; v9 O/ _$ c- V+ g& |+ W# v1 z- vset xmax 30
% d8 \( E; c5 h- {' A/ q
9 b7 P: r/ U* `5 ]* ^( a( h6 |% l
set ymax 1.0

5 I5 a# j, q# o! j9 Z' z. s9 y( h$ o9 j& \: f3 i) J! D
clear-all-plots

# `  w( Y0 U! q
& p+ V! K; W. Gsetup-plot1
" q4 u$ t/ w0 v8 I, J. f
; D. b2 A( x# A8 E4 {$ b+ j
setup-plot2
; V; G; y* @' X

1 Z" z& F& k1 d0 f/ ^$ Csetup-plot3

4 [- `7 j5 b( S& Tend1 I! x! K+ O9 H* |8 u

& k  \  t% q& b0 @: s6 p$ _. N;;run time procedures
  m* _1 l) L( p5 |: Y
. z0 G2 k( A" D9 m; K0 c) }to go) a4 j9 Y& a) N
& i% v! h- |4 ^2 V
ask turtles [do-business]

- ^" C/ I' h; |; ?; _end
& [* t+ P0 L: p0 [
* U' \1 A  i$ s3 X4 Y1 zto do-business % G1 E5 f2 O1 z, x# ?
9 ]) R6 q& ^+ t$ |0 v5 c; X! t1 f

4 k6 Z  c6 b. b7 p* Vrt random 360

% i0 u2 _! ^! Y
5 K' z- e+ U1 z( H: {# `  J! j7 M, g0 q! `$ ?fd 1
- n4 q& b# K* x2 ]: W5 ~

  ]2 d$ o( G6 U3 Kifelse(other turtles-here != nobody)[

! W1 R  v9 S  D+ N. P& A: F' f% q  M
set customer one-of other turtles-here
: H- Y) h; C. I
* l- p: G. G2 E8 X& F! J
;; set [customer] of customer myself
0 Y! [8 R, i& `* C3 O
2 V# z( h1 ]. X5 u8 Y% D0 U
set [trade-record-one] of self item (([who] of customer) - 1)
6 _2 @) l$ A: m8 T; O[trade-record-all]of self/ M9 }$ P. k; F9 q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' d- R* r: }2 e9 M  w) F
* h: b! _. y0 Q# ?set [trade-record-one] of customer item (([who] of self) - 1)- K: [+ n1 j. D- Y8 S. F
[trade-record-all]of customer
4 G; U" u1 @# v# f+ `9 X) I
$ ^2 M# k- d1 R2 m
set [trade-record-one-len] of self length [trade-record-one] of self

5 y( k+ a, ^+ U1 f& ]# @* q1 E+ A1 z- K; [# M& {0 P# t5 l( a3 N. I* o# h
set trade-record-current( list (timer) (random money-upper-limit))

6 b5 v" E0 R7 c  ^7 ~" I8 A2 V/ H: i9 d1 O; N/ f9 A6 m
ask self [do-trust]# Z. C6 \. q1 a' P7 Y0 Q) [
;;
先求ij的信任度8 x, N7 ]& W9 c( c7 a
4 G: S' N) s) l3 e: O* r6 m$ P
if ([trust-ok] of self)
. K/ c2 A  U/ ^, I, p;;
根据ij的信任度来决定是否与j进行交易[. H/ R3 s2 w! P- A' ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ |; q$ m( M' ?- p, P9 j. J
9 l5 f% R* p' i3 M[
& @: [2 d9 V* u+ i6 k
' g9 L" N. S2 V5 E; z
do-trade
5 M: U% g$ H# S3 J/ r

+ S8 H) W3 Z5 S4 Q- z+ H) Bupdate-credibility-ijl
+ x" P' W- n4 e. o4 X
! {# A/ h7 J4 X$ m
update-credibility-list
8 o, G9 r/ Z- }9 Z/ E7 Q
/ x1 c1 |$ u  |3 @6 E2 O8 R* E) g

: _& n1 v5 b1 W) C5 {1 M) x4 i, @update-global-reputation-list

- M& @. z; N0 g" @0 \8 Q1 |  @  W
poll-class

0 z( y3 O: J1 y6 v! a1 |. ]! j, q% D! F8 X: d
get-color

" `" O7 J* H- Z  {' \6 H% O+ @# ?, A! ~- n
]]5 E, K7 B: u5 Q* N, s8 V, I
2 t! J, Y& X' b9 T  l
;;
如果所得的信任度满足条件,则进行交易
) e2 z5 x4 c7 F6 u- ?' }
! a3 @. f: B6 i  b& S( l8 A[
% m# T% a' T; @/ _* ]

0 K6 r5 o2 k2 W2 _rt random 360

+ G( L1 J3 z* i! N* J  {+ n3 V% R# S+ t
fd 1
" b# g7 }+ ~- c7 x6 N  Q
2 ]+ _' j9 ]  E6 ^+ I9 k# g
]

1 @% f8 y1 f( P# _4 T5 _7 F: v/ F/ x6 \. h2 E( p* z- ~
end
! R4 v( f9 i4 H. T2 b5 M1 ~

1 J' D% }* E3 m: V: N8 L8 zto do-trust 9 n4 ?  q: k" X2 ?2 I- u% }  L/ F$ K
set trust-ok False0 \: P+ Y3 I  ^% b3 ^
7 w4 V' s6 J: S3 h

/ B4 B5 ?0 O  u( Y/ m+ T( c7 A8 Klet max-trade-times 02 c' O; r) t1 [, A+ y8 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 ~7 `' ~1 |* U# q9 Dlet max-trade-money 0
$ p3 M. a, l0 t) x: z3 d, x: @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* J% m4 R; K! T% ]/ v
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 }8 P2 k0 X" o) v: P/ H, N" |8 h! w+ Q4 s0 n) Q% \6 u: g
; k- ]  h# p7 g6 G
get-global-proportion7 m' g# X9 d( `. G) E
let trust-value
7 m" f( Q5 ?7 d: tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% V3 J6 A3 N) g" y
if(trust-value > trade-trust-value)
) Q5 M9 J6 O( H/ R& c1 P  [) L[set trust-ok true]; ~( I2 V* k4 P
end
1 [$ \) s2 u* E
6 O2 ~$ p9 Q# ?  Oto get-global-proportion
4 J' m" [5 s5 I: ?7 k& r( S% Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); M. V# H6 y) L. @. z) l
[set global-proportion 0]
( _4 G, g9 ^7 |+ K[let i 03 l/ t& }  f7 z1 O% I# f
let sum-money 0
( z1 e( b. E4 S! I- e6 \0 ~- {while[ i < people], x. a( }0 o+ G# V8 Y4 f
[1 p' h' U  b& z
if( length (item i
+ `6 x* Z2 D8 Y0 j+ j6 L$ m1 m8 ][trade-record-all] of customer) > 3 )

0 ?7 t1 |" I( m* ][
: E+ D1 F: O. ?6 uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 a  N, L# O2 y: f8 ~+ F/ z
]
4 ~! s& L4 U' z  A) T7 z8 D& i! ]! E]& m4 H/ \+ q( F+ s
let j 0. D7 s& C. G8 h" P# f
let note 0
2 N% N) f# Q% ^& `7 fwhile[ j < people]
* k# b+ Q/ y# X2 F: n  e( o2 }" S[
3 X6 x# F+ U4 ], ?! Bif( length (item i2 e* ~. S* g4 l0 S0 ]1 l5 s9 l8 l( P
[trade-record-all] of customer) > 3 )

# G( j* k1 ?, M9 K[( w- ]1 b8 _3 O, M0 m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) ]  N" u0 g& I! D: Z& _" ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 h; \1 A/ q2 z1 W% q! `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( u/ F1 x6 f& u" m# O0 t& }3 R]
/ I4 ^0 w6 N& p8 T: a]
  a# B* A8 Z9 H0 _9 U8 `3 Q7 H8 zset global-proportion note
# h$ x7 i/ V! c( R3 e: s]
) O1 _' w; p; j1 n  dend5 f* T. U5 I& O. q5 z8 S

4 r5 m( \3 s' S, m. E' Kto do-trade6 G$ Q( v% U( J) \) T/ U
;;
这个过程实际上是给双方作出评价的过程
' X6 u( K& j& F' l  Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& q) x' c! v0 F4 ^( s/ `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 i. {# g- C! i- \. O/ _2 N4 Y; Lset trade-record-current lput(timer) trade-record-current8 r% q' ~+ I5 K7 h
;;
评价时间9 C2 ?/ d# v) m/ t% h( O
ask myself [2 _" V) E0 c# {5 m
update-local-reputation
- ]& J) d1 L7 L( \" i8 Y& E8 l5 s# qset trade-record-current lput([local-reputation] of myself) trade-record-current% }5 n; I1 T" r
]1 Z1 v+ |, o5 l; U9 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 L" S  G0 i5 ?, N5 t;;
将此次交易的记录加入到trade-record-one: ]" p) \% h& a3 ~; l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 y! M$ y. ~! b' \3 h# Blet note (item 2 trade-record-current )
( q3 Z5 B- C5 w  ~set trade-record-current9 G% g( Z( ?" b3 m+ x1 ~: ~2 V
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ t9 Z8 H0 k$ O- o
set trade-record-current
- L0 m- D7 D; I( k7 ~; `2 L(replace-item 3 trade-record-current note)- a- i# A' [- x0 t6 s

7 p( ?$ a7 v; Q% `; f% |
3 y% `/ P; q+ y, M) I& f! ]! O: j
ask customer [
% _5 z  f5 K* q& ?% aupdate-local-reputation
$ f; J( ~0 h/ \6 Dset trade-record-current
( n6 i/ x7 `, C& R* g# C6 u& f( M1 P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' G1 D( N$ m( U  V]
/ A2 B, ~* o* x5 v0 i5 k8 a# G
, H2 m) |4 l+ S  P( l3 k% i. s

5 k9 S$ [# P2 a; h$ aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, D) i5 n9 C/ u6 o" d( J) u5 a. t

. h7 C! j6 G2 U& H" p8 iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! Q9 a* H: w- q3 y+ S( m
;;
将此次交易的记录加入到customertrade-record-all
+ d, x4 e# R/ [4 T. l0 E( E& jend
# E- R, q$ T" M; h3 `% w/ J% [' m( |5 }" i& U3 u. S0 ?7 s; P
to update-local-reputation
( O2 ~6 t* p/ \+ tset [trade-record-one-len] of myself length [trade-record-one] of myself
( y4 K' J: u# ~1 O" f$ I9 N% u5 i( z8 m

5 @2 J: L+ M! d. ^! E* b;;if [trade-record-one-len] of myself > 3

* r9 v  X' T) m& ~update-neighbor-total) t0 o0 @9 z. a( e" V
;;
更新邻居节点的数目,在此进行3 G+ L8 A" K! u! G1 Y) C7 O
let i 3
" j( h4 }3 X# K: i' Y4 e& c3 |let sum-time 0/ I6 P: L  {  g% E) R. x* c
while[i < [trade-record-one-len] of myself]
1 ~7 g% h" ]% w' f. X3 ~[: Q. _; c. O7 x& q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 V" V' {% U9 k. v! @- K7 Kset i
9 \# `6 ^9 H/ ~, d# C- ?$ C* Q( i + 1)
6 W0 Q+ [% g" r0 d
]9 c* ]9 t# C0 U: L
let j 3* j6 M; S' f2 a  F* W( K
let sum-money 0( h7 ?( T; D: V; u3 H+ v
while[j < [trade-record-one-len] of myself]
2 F/ D! B- ^( z0 k5 B8 x[* ]: r$ e+ h  X, H' F
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)
, q3 G) e# o# S2 Rset j$ L* B) P& b% g% P8 y* e
( j + 1)

+ L! d9 `3 U! e6 []- j+ {: S$ x8 B4 v
let k 3. [) t" R5 x- b/ Q- `3 d/ _
let power 04 u$ L1 q0 W/ [* H: X1 B; _
let local 03 i4 U" o% E* a  m# y! l& ?) V7 B
while [k <[trade-record-one-len] of myself]
! G- Q3 ]/ A. g; {# E  D6 X[
1 u7 S; M  h' L5 F* J* g& G# @* m4 {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)
: i! h5 k+ z) Z" D4 Aset k (k + 1)/ i1 G$ v4 @' ~( ~7 p; `2 v
]7 }  p6 U! A6 v7 }8 J0 d) A0 k
set [local-reputation] of myself (local)" {; [4 j' N- J! i1 I
end; G- O% u4 u, Q3 l7 ?

. Z2 H( R* g6 L$ z6 Jto update-neighbor-total
. e' C; c! u( {4 }9 a; e; m: ~- p: {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  V8 b0 _2 m4 R$ ?* ?( Z( E& n' D  C" S! l6 J/ W4 O- w

$ D: y  Z9 _8 eend
/ `9 C% u  ?/ }& E' Z+ ]8 s6 c6 f! m2 G% U. ]6 k+ z$ P: d% k# a
to update-credibility-ijl
. s; i* n* `8 v& b; }! v/ P
1 i2 ], g9 d! l4 m/ y, C+ V# U;;
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。7 I! t0 l' ~$ [; E
let l 0; h; r9 m; z7 }& Q9 W* j/ Y- Z  R6 A
while[ l < people ]
  f* u1 s7 v* M! 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
% s! [7 Y- S& o! ][% o# u5 a' M( d! G8 F, U) q; ^- B: Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ X5 E6 q% _6 A& h- pif (trade-record-one-j-l-len > 3); w+ z) ]9 H4 {; {7 q& o3 E
[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* _& p" Q6 U# t6 N: N3 w
let i 3
' v9 P4 V9 W6 v- I% V0 llet sum-time 02 I9 J5 i* Z; O+ K9 \
while[i < trade-record-one-len]
3 l4 C. o( H, N  j( _. |[
( W; O( [: I' D8 ]8 t( D) N' P  x) S# O) iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) @* M- X, y9 B) M' F) {set i. j8 B( k5 ]4 a6 t3 t1 @
( i + 1)
, ?1 k8 m0 ?5 p+ |8 x% e& w- X; I
]/ ?! `. n% v2 R6 R
let credibility-i-j-l 0; i$ `+ F8 q; |; G5 Y# A9 w
;;i
评价(jjl的评价)) d( z3 o: c3 L# [! u0 q
let j 3
$ C; `8 n; J# E( T! Q0 o0 _let k 4
. f; F* b0 T1 x4 }0 E& [while[j < trade-record-one-len]8 h0 j& l1 Y, S6 k
[
/ J, H7 i( @% y( Q. bwhile [((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) h. M, `, k! a. J+ R
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)
: e9 j' E( X! U( jset j' w  o- {5 r( o! z
( j + 1)
; S! B0 C8 y$ Q) u3 j) ^7 V
], w# R' L1 z) m% P3 U
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 ))# Q/ N8 g9 W" N

; @- u, [: ^" I- Q/ E* f
3 o6 }/ ^( y0 u6 d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 B( a1 R2 a5 T- x1 A+ P
;;
及时更新il的评价质量的评价5 B) e9 \' [' M2 x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 V) k! `- @4 T( m% X9 \9 D
set l (l + 1)
( s  J$ h# Q1 s4 L! O]: w! F1 i* V  B8 B; i  h
end
8 Q3 Q0 r  A% S# m1 |' Y1 ~% j0 Q# p# @  h( E8 @' h! K% H
to update-credibility-list
8 l( R# W. o6 g& blet i 0
8 Q* T9 A! ?& g6 gwhile[i < people]- ]- Q& T5 D' z% R$ b
[
9 D. [+ o% \1 P2 ?, Slet j 0
" Q! a3 _3 Z2 b# Z" b6 xlet note 0
+ ^- V, \4 |8 K$ M: j# J- qlet k 0
6 y: R# @+ @% s+ j$ |& @& e2 L;;
计作出过评价的邻居节点的数目
5 P$ z2 E- u; x; Ewhile[j < people]
8 w; Y6 s0 A3 T* M4 j( c[
* r+ `( j/ B4 p3 P/ W/ Hif (item j( [credibility] of turtle (i + 1)) != -1)
, G' S3 G/ J; Z$ ^4 \;;
判断是否给本turtle的评价质量做出过评价的节点' i" i: t4 s$ w* \2 |% p9 m
[set note (note + item j ([credibility]of turtle (i + 1)))3 }6 L) |4 y5 ^* v
;;*(exp (-(people - 2)))/(people - 2))]

' v, K0 o( s6 I6 W- Wset k (k + 1): Y/ P5 I7 m2 R8 o: c: b, k
]+ U  K/ l1 `5 ^$ J- X; X6 r1 w
set j (j + 1)
/ D$ X: R* a3 S" i5 Q' M3 _, r: r]
. ]5 T5 }: |2 Zset note (note *(exp (- (1 / k)))/ k). i% Q3 X( n1 y3 m: d! H; q5 f7 P
set credibility-list (replace-item i credibility-list note)% [& y" O1 t  D4 W5 q. G
set i (i + 1)
! Y0 R% Q1 i0 A% @( O5 _) d; L]
5 b& U! f8 I  I+ \end
: \3 S- c+ B* k0 I( x- F: ~! [/ Z: y' W- i
to update-global-reputation-list1 J( q) |1 j, t- Q; Q
let j 0! k% o  I; Z( X* G; @1 ~' m
while[j < people]! _1 F$ o& I. s6 N+ B. w! y
[9 l8 W2 p, O9 _$ ~- D3 ~
let new 0
; n# O+ y7 \3 Q7 ?" @$ V% p4 a;;
暂存新的一个全局声誉
5 R% x# ?2 M. [. ?' ^" Qlet i 0
* N- W, x, }8 g" y+ u( \6 i2 ilet sum-money 0
; |& ~, I0 Q1 e2 Plet credibility-money 0
/ a0 m+ W5 |4 p+ E, L- K, `; t# J' Q3 swhile [i < people]# U8 V/ P" v) Q0 l9 w
[
$ i6 M/ l3 J9 L: `* N' @& Y; Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), O; B( x. w# D+ w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- |+ {5 g4 W! ~, q, Dset i (i + 1), m8 p* J+ I  w1 @2 c/ c
]
& z' d% t' t% @& I0 c! `9 Glet k 0% }% C+ [" X( \. ]7 U# U* o# Z
let new1 07 Z  m: u3 n! p3 Q/ B
while [k < people]) Z* i  k. Z, d0 p! b. y
[
! W( M. v# t6 a, J! L$ V) l0 y, \# dset 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). \2 }0 X5 ?) F# z
set k (k + 1)7 U. V# I( `1 x$ p) C& o
]4 E- Q# |9 p. i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; l2 G3 L' _6 Y; M! y
set global-reputation-list (replace-item j global-reputation-list new)5 n5 _9 \1 D7 N
set j (j + 1)
1 ?+ c1 t- R8 W! X]
3 S; B& X2 E* P: i! G2 h. |" Vend1 j7 E* ?) c3 n0 A* S( ~

# N6 I$ h7 @6 o/ D) B8 b* |
, c+ K8 r; R0 S. ]+ W3 f: e% q+ W8 i* e# U7 W
to get-color
% E" j8 r) \1 u* D" P
, G( Z' ?2 F- P! Vset color blue

" ~) R& y: f( g% S" ]# ?end
$ L) A6 A" ?1 k* Q  w/ ^; \7 C6 l- {( x
to poll-class* ]5 ?. B5 b4 j* N9 @1 s7 R8 C
end
3 x; f& L$ A" s- I. s  W" f
) ]: ~9 t; S$ X, j1 w' }  J# bto setup-plot1
& \  ~9 J. P1 p$ M# l1 ?( Y6 S6 [# m9 }9 O, D% @
set-current-plot "Trends-of-Local-reputation"

9 v5 W0 w0 ~' H; d* `- R; o, f4 x- f5 K0 g6 P
set-plot-x-range 0 xmax

+ L/ `/ u0 @1 d% T3 l
6 l! M! y5 b" j" }# p0 y' iset-plot-y-range 0.0 ymax

- l7 [7 A0 o/ E% b& Y" w! f. Lend2 w* u& B8 k+ Q" i' i7 k: J
4 b7 `3 c" e8 n" h1 U8 v! f2 _' z
to setup-plot2. M6 ?  J8 d, I

# G$ L6 x5 O7 \6 Jset-current-plot "Trends-of-global-reputation"
( D8 k2 W- ^5 H2 E1 Z4 ?7 _) b/ U

! {: u0 m6 w4 \, R( |+ Fset-plot-x-range 0 xmax
4 ~6 e3 _  }3 Z5 F- A9 N! }5 h6 z3 ~
2 B* U* R# M5 n: ^* b4 b
set-plot-y-range 0.0 ymax
- p& E. D) I9 N1 C2 |" Y2 u2 O8 I
end5 J/ G, r( I6 u& j# A1 \
9 N" ^0 `  k& U. ]; c9 ?  R
to setup-plot3
% p8 b# `( B" z1 ~- U+ B3 i: r/ I) ~& L( {. j5 q) _4 i- Z; O- l
set-current-plot "Trends-of-credibility"

/ U# g2 I2 z7 [; m9 w! q9 W$ R& v& Z5 y" I
set-plot-x-range 0 xmax
" ^/ {' c) R$ x
& c) x$ f6 u& W- f  ]$ z; x8 ?7 f9 X" j
set-plot-y-range 0.0 ymax
+ G# T& k! K4 [
end) N6 L; Y1 O! w/ r
* @9 s  K' r2 v- E2 @1 s9 q
to do-plots7 O  @  s- Q8 y! o3 A1 o
set-current-plot "Trends-of-Local-reputation"5 t* T  ^. c: u
set-current-plot-pen "Honest service"
4 S7 a, o7 X+ v- }& V8 m$ ^, I$ {6 Jend6 }( t: M9 H- K& h, g% ?0 d/ ]; T5 g' h

/ i4 m/ d4 q& v, X: 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.# c# l6 T' \0 }

* Q! b% r$ q/ f6 D5 T) A0 a* x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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